/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:44:42,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:44:42,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:44:42,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:44:42,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:44:42,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:44:42,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:44:42,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:44:42,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:44:42,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:44:42,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:44:42,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:44:42,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:44:42,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:44:42,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:44:42,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:44:42,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:44:42,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:44:42,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:44:42,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:44:42,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:44:42,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:44:42,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:44:42,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:44:42,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:44:42,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:44:42,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:44:42,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:44:42,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:44:42,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:44:42,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:44:42,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:44:42,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:44:42,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:44:42,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:44:42,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:44:42,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:44:42,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:44:42,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:44:42,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:44:42,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:44:42,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:44:42,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:44:42,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:44:42,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:44:42,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:44:42,544 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:44:42,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:44:42,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:44:42,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:44:42,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:44:42,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:44:42,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:44:42,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:44:42,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:44:42,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:44:42,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:44:42,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:44:42,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:44:42,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:44:42,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:44:42,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:44:42,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:44:42,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:44:42,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:44:42,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:44:42,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:44:42,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:44:42,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:44:42,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:44:42,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:44:42,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:44:42,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:44:42,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:44:42,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:44:42,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:44:42,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:44:42,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-12 13:44:43,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b2f6c04c/b0a3d1c6904947eb9461748c5ab4a78e/FLAGca8bf15ec [2020-10-12 13:44:44,055 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:44:44,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-12 13:44:44,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b2f6c04c/b0a3d1c6904947eb9461748c5ab4a78e/FLAGca8bf15ec [2020-10-12 13:44:44,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b2f6c04c/b0a3d1c6904947eb9461748c5ab4a78e [2020-10-12 13:44:44,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:44:44,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:44:44,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:44:44,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:44:44,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:44:44,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:44:44" (1/1) ... [2020-10-12 13:44:44,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:44, skipping insertion in model container [2020-10-12 13:44:44,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:44:44" (1/1) ... [2020-10-12 13:44:44,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:44:44,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:44:46,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:44:46,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:44:46,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:44:47,021 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:44:47,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47 WrapperNode [2020-10-12 13:44:47,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:44:47,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:44:47,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:44:47,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:44:47,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... [2020-10-12 13:44:47,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:44:47,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:44:47,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:44:47,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:44:47,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:44:47,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:44:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:44:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:44:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:44:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:44:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:44:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:44:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:44:47,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:44:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:44:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:44:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:44:47,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:44:47,570 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:44:47,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:44:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:44:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:45:00,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:45:00,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:45:00,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:45:00 BoogieIcfgContainer [2020-10-12 13:45:00,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:45:00,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:45:00,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:45:00,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:45:00,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:44:44" (1/3) ... [2020-10-12 13:45:00,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5477b66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:45:00, skipping insertion in model container [2020-10-12 13:45:00,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:47" (2/3) ... [2020-10-12 13:45:00,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5477b66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:45:00, skipping insertion in model container [2020-10-12 13:45:00,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:45:00" (3/3) ... [2020-10-12 13:45:00,282 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label41.c [2020-10-12 13:45:00,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:45:00,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:45:00,323 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:45:00,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:45:00,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:45:00,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:45:00,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:45:00,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:45:00,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:45:00,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:45:00,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:45:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:45:00,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 13:45:00,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:00,421 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] [2020-10-12 13:45:00,421 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:00,427 INFO L82 PathProgramCache]: Analyzing trace with hash 633410455, now seen corresponding path program 1 times [2020-10-12 13:45:00,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:00,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884057561] [2020-10-12 13:45:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:01,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:01,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 13:45:01,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-12 13:45:01,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 13:45:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:45:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:45:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:01,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884057561] [2020-10-12 13:45:01,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:01,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:45:01,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051223574] [2020-10-12 13:45:01,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:45:01,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:01,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:45:01,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:45:01,231 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-12 13:45:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:45:20,637 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-12 13:45:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:45:20,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-12 13:45:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:45:20,696 INFO L225 Difference]: With dead ends: 4080 [2020-10-12 13:45:20,696 INFO L226 Difference]: Without dead ends: 2872 [2020-10-12 13:45:20,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-12 13:45:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-12 13:45:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-12 13:45:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-12 13:45:20,891 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 50 [2020-10-12 13:45:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:45:20,892 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-12 13:45:20,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:45:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-12 13:45:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 13:45:20,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:20,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:45:20,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:45:20,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:20,900 INFO L82 PathProgramCache]: Analyzing trace with hash 443103603, now seen corresponding path program 1 times [2020-10-12 13:45:20,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:20,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442708666] [2020-10-12 13:45:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:23,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:23,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 13:45:23,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:45:23,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-12 13:45:23,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:45:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 13:45:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:23,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:23,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:45:23,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:45:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:45:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 13:45:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:45:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:45:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:23,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442708666] [2020-10-12 13:45:23,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:23,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:45:23,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717095476] [2020-10-12 13:45:23,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:45:23,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:23,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:45:23,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:23,550 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-12 13:45:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:45:43,959 INFO L93 Difference]: Finished difference Result 5613 states and 9263 transitions. [2020-10-12 13:45:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:45:43,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-12 13:45:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:45:43,980 INFO L225 Difference]: With dead ends: 5613 [2020-10-12 13:45:43,980 INFO L226 Difference]: Without dead ends: 3685 [2020-10-12 13:45:43,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:45:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2020-10-12 13:45:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3605. [2020-10-12 13:45:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-10-12 13:45:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5130 transitions. [2020-10-12 13:45:44,091 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5130 transitions. Word has length 125 [2020-10-12 13:45:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:45:44,092 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 5130 transitions. [2020-10-12 13:45:44,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:45:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5130 transitions. [2020-10-12 13:45:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 13:45:44,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:44,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:45:44,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:45:44,097 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:44,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1016650103, now seen corresponding path program 1 times [2020-10-12 13:45:44,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:44,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487120754] [2020-10-12 13:45:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:45,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:45,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 13:45:45,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:45:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-12 13:45:45,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:45:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:45,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:45,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:45,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:45:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:45:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:45:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:45,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:45,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:45:45,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 13:45:45,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:45:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:45:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:45,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487120754] [2020-10-12 13:45:45,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:45,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:45:45,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921305490] [2020-10-12 13:45:45,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:45:45,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:45,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:45:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:45,562 INFO L87 Difference]: Start difference. First operand 3605 states and 5130 transitions. Second operand 7 states. [2020-10-12 13:46:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:07,363 INFO L93 Difference]: Finished difference Result 10698 states and 15473 transitions. [2020-10-12 13:46:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:46:07,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-10-12 13:46:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:07,401 INFO L225 Difference]: With dead ends: 10698 [2020-10-12 13:46:07,401 INFO L226 Difference]: Without dead ends: 7099 [2020-10-12 13:46:07,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:46:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7099 states. [2020-10-12 13:46:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7099 to 6971. [2020-10-12 13:46:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6971 states. [2020-10-12 13:46:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 8982 transitions. [2020-10-12 13:46:07,614 INFO L78 Accepts]: Start accepts. Automaton has 6971 states and 8982 transitions. Word has length 155 [2020-10-12 13:46:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:07,618 INFO L479 AbstractCegarLoop]: Abstraction has 6971 states and 8982 transitions. [2020-10-12 13:46:07,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:46:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 6971 states and 8982 transitions. [2020-10-12 13:46:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 13:46:07,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:07,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:46:07,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:46:07,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1252480928, now seen corresponding path program 1 times [2020-10-12 13:46:07,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:07,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484230716] [2020-10-12 13:46:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:07,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:08,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:08,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-12 13:46:08,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-12 13:46:08,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:08,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:08,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:46:08,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 13:46:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:08,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:08,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:08,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:08,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:46:08,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:08,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:08,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:08,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:08,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:08,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:08,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:46:08,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 13:46:08,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:46:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:46:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:46:08,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484230716] [2020-10-12 13:46:08,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:08,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:46:08,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444066895] [2020-10-12 13:46:08,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:46:08,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:46:08,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:46:08,441 INFO L87 Difference]: Start difference. First operand 6971 states and 8982 transitions. Second operand 5 states. [2020-10-12 13:46:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:27,464 INFO L93 Difference]: Finished difference Result 14101 states and 19542 transitions. [2020-10-12 13:46:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:46:27,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-12 13:46:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:27,517 INFO L225 Difference]: With dead ends: 14101 [2020-10-12 13:46:27,518 INFO L226 Difference]: Without dead ends: 10407 [2020-10-12 13:46:27,531 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 [2020-10-12 13:46:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2020-10-12 13:46:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10401. [2020-10-12 13:46:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10401 states. [2020-10-12 13:46:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10401 states to 10401 states and 13016 transitions. [2020-10-12 13:46:27,823 INFO L78 Accepts]: Start accepts. Automaton has 10401 states and 13016 transitions. Word has length 179 [2020-10-12 13:46:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:27,826 INFO L479 AbstractCegarLoop]: Abstraction has 10401 states and 13016 transitions. [2020-10-12 13:46:27,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:46:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10401 states and 13016 transitions. [2020-10-12 13:46:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 13:46:27,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:27,833 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:46:27,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:46:27,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash 472050431, now seen corresponding path program 1 times [2020-10-12 13:46:27,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:27,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173059558] [2020-10-12 13:46:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 13:46:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:46:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3204 [2020-10-12 13:46:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:46:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:46:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:46:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:46:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:46:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:46:31,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 13:46:31,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:46:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:46:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:46:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:31,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:31,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:46:31,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 13:46:31,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-12 13:46:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 86 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:46:31,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173059558] [2020-10-12 13:46:31,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:31,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:46:31,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553879565] [2020-10-12 13:46:31,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:46:31,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:31,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:46:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:46:31,806 INFO L87 Difference]: Start difference. First operand 10401 states and 13016 transitions. Second operand 7 states. [2020-10-12 13:46:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:53,225 INFO L93 Difference]: Finished difference Result 20180 states and 25546 transitions. [2020-10-12 13:46:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:46:53,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-12 13:46:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:53,273 INFO L225 Difference]: With dead ends: 20180 [2020-10-12 13:46:53,274 INFO L226 Difference]: Without dead ends: 10588 [2020-10-12 13:46:53,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:46:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10588 states. [2020-10-12 13:46:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10588 to 10513. [2020-10-12 13:46:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2020-10-12 13:46:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 13211 transitions. [2020-10-12 13:46:53,545 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 13211 transitions. Word has length 248 [2020-10-12 13:46:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:53,546 INFO L479 AbstractCegarLoop]: Abstraction has 10513 states and 13211 transitions. [2020-10-12 13:46:53,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:46:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 13211 transitions. [2020-10-12 13:46:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 13:46:53,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:53,554 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:46:53,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:46:53,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash -246076367, now seen corresponding path program 1 times [2020-10-12 13:46:53,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:53,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921106702] [2020-10-12 13:46:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:54,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:54,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 13:46:54,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:46:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-12 13:46:54,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-12 13:46:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 13:46:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:54,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:54,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:46:54,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:46:54,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:46:54,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:46:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:46:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:46:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 13:46:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 13:46:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 13:46:55,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921106702] [2020-10-12 13:46:55,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:55,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:46:55,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251716032] [2020-10-12 13:46:55,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:46:55,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:46:55,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:46:55,064 INFO L87 Difference]: Start difference. First operand 10513 states and 13211 transitions. Second operand 5 states. [2020-10-12 13:47:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:47:33,095 INFO L93 Difference]: Finished difference Result 27656 states and 35947 transitions. [2020-10-12 13:47:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:47:33,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-12 13:47:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:47:33,174 INFO L225 Difference]: With dead ends: 27656 [2020-10-12 13:47:33,174 INFO L226 Difference]: Without dead ends: 17952 [2020-10-12 13:47:33,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:47:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17952 states. [2020-10-12 13:47:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17952 to 17873. [2020-10-12 13:47:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17873 states. [2020-10-12 13:47:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17873 states to 17873 states and 22184 transitions. [2020-10-12 13:47:33,626 INFO L78 Accepts]: Start accepts. Automaton has 17873 states and 22184 transitions. Word has length 255 [2020-10-12 13:47:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:47:33,628 INFO L479 AbstractCegarLoop]: Abstraction has 17873 states and 22184 transitions. [2020-10-12 13:47:33,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:47:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 17873 states and 22184 transitions. [2020-10-12 13:47:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-12 13:47:33,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:47:33,635 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:47:33,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:47:33,636 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:47:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:47:33,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2066999187, now seen corresponding path program 1 times [2020-10-12 13:47:33,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:47:33,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172672335] [2020-10-12 13:47:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:47:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-12 13:47:35,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:47:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-12 13:47:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:47:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:47:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:47:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:47:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:47:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:47:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:47:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:47:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:47:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:35,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:47:35,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:47:35,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:35,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:47:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:47:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:47:35,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:47:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:47:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 13:47:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:47:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:47:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:47:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:47:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:47:36,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172672335] [2020-10-12 13:47:36,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:47:36,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:47:36,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980106823] [2020-10-12 13:47:36,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:47:36,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:47:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:47:36,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:47:36,394 INFO L87 Difference]: Start difference. First operand 17873 states and 22184 transitions. Second operand 7 states. [2020-10-12 13:48:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:48:10,964 INFO L93 Difference]: Finished difference Result 42824 states and 55862 transitions. [2020-10-12 13:48:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:48:10,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-12 13:48:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:48:11,066 INFO L225 Difference]: With dead ends: 42824 [2020-10-12 13:48:11,067 INFO L226 Difference]: Without dead ends: 25760 [2020-10-12 13:48:11,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:48:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25760 states. [2020-10-12 13:48:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25760 to 25671. [2020-10-12 13:48:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25671 states. [2020-10-12 13:48:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25671 states to 25671 states and 32586 transitions. [2020-10-12 13:48:11,646 INFO L78 Accepts]: Start accepts. Automaton has 25671 states and 32586 transitions. Word has length 257 [2020-10-12 13:48:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:48:11,647 INFO L479 AbstractCegarLoop]: Abstraction has 25671 states and 32586 transitions. [2020-10-12 13:48:11,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:48:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 25671 states and 32586 transitions. [2020-10-12 13:48:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-12 13:48:11,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:48:11,656 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:48:11,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:48:11,656 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:48:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:48:11,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1101173987, now seen corresponding path program 1 times [2020-10-12 13:48:11,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:48:11,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949894955] [2020-10-12 13:48:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:48:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:14,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:14,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-12 13:48:14,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:48:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3030 [2020-10-12 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-12 13:48:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:48:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:48:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:48:14,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:48:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:48:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:48:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:48:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:15,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:48:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:48:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-12 13:48:15,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:48:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:48:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:48:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:48:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 13:48:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-12 13:48:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:48:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-12 13:48:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 87 proven. 5 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 13:48:16,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949894955] [2020-10-12 13:48:16,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:48:16,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:48:16,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135994423] [2020-10-12 13:48:16,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:48:16,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:48:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:48:16,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:48:16,149 INFO L87 Difference]: Start difference. First operand 25671 states and 32586 transitions. Second operand 8 states. [2020-10-12 13:48:16,369 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 36