/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/Problem06_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:01:39,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:01:39,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:01:39,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:01:39,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:01:39,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:01:39,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:01:39,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:01:39,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:01:39,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:01:39,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:01:39,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:01:39,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:01:39,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:01:39,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:01:39,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:01:39,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:01:39,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:01:39,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:01:39,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:01:39,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:01:39,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:01:39,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:01:39,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:01:39,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:01:39,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:01:39,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:01:39,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:01:39,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:01:39,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:01:39,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:01:39,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:01:39,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:01:39,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:01:39,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:01:39,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:01:39,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:01:39,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:01:39,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:01:39,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:01:39,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:01:39,558 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 07:01:39,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:01:39,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:01:39,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:01:39,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:01:39,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:01:39,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:01:39,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:01:39,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:01:39,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:01:39,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:01:39,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:01:39,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:01:39,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:01:39,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:01:39,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:01:39,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:01:39,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:01:39,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:01:39,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:01:39,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:01:39,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:01:39,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:01:39,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:01:39,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:01:39,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:01:39,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:01:39,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:01:39,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:01:39,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:01:39,626 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 07:01:39,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:01:39,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:01:39,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:01:39,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:01:39,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:01:39,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label04.c [2020-10-13 07:01:40,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1513ff863/d3977a6c90e649abab3569e49ad34d05/FLAG372ff764a [2020-10-13 07:01:41,001 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:01:41,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label04.c [2020-10-13 07:01:41,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1513ff863/d3977a6c90e649abab3569e49ad34d05/FLAG372ff764a [2020-10-13 07:01:41,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1513ff863/d3977a6c90e649abab3569e49ad34d05 [2020-10-13 07:01:41,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:01:41,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:01:41,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:01:41,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:01:41,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:01:41,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:41" (1/1) ... [2020-10-13 07:01:41,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:41, skipping insertion in model container [2020-10-13 07:01:41,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:41" (1/1) ... [2020-10-13 07:01:41,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:01:41,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:01:44,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:01:44,112 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:01:45,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:01:45,345 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:01:45,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45 WrapperNode [2020-10-13 07:01:45,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:01:45,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:01:45,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:01:45,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:01:45,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2020-10-13 07:01:45,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:01:45,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:01:45,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:01:45,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:01:45,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (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 07:01:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:01:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:01:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:01:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:01:45,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:01:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:01:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:01:45,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:01:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:01:53,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:01:53,286 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:01:53,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:53 BoogieIcfgContainer [2020-10-13 07:01:53,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:01:53,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:01:53,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:01:53,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:01:53,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:01:41" (1/3) ... [2020-10-13 07:01:53,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:53, skipping insertion in model container [2020-10-13 07:01:53,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (2/3) ... [2020-10-13 07:01:53,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:53, skipping insertion in model container [2020-10-13 07:01:53,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:53" (3/3) ... [2020-10-13 07:01:53,311 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label04.c [2020-10-13 07:01:53,322 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:01:53,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:01:53,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:01:53,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:01:53,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:01:53,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:01:53,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:01:53,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:01:53,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:01:53,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:01:53,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:01:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:01:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-13 07:01:53,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:01:53,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:53,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:01:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:01:53,475 INFO L82 PathProgramCache]: Analyzing trace with hash -727708040, now seen corresponding path program 1 times [2020-10-13 07:01:53,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:01:53,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401438966] [2020-10-13 07:01:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:01:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:59,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-13 07:01:59,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:01:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 07:01:59,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:01:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:01:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:01:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:02:03,191 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-13 07:02:03,415 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-13 07:02:03,603 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-13 07:02:03,814 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-13 07:02:03,990 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-13 07:02:04,160 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-13 07:02:04,313 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-13 07:02:04,502 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-13 07:02:04,878 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 07:02:05,067 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-13 07:02:05,223 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-13 07:02:05,560 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:02:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:02:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:05,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:05,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:02:05,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:02:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 07:02:05,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:02:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:02:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:02:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:02:17,310 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 07:02:17,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401438966] [2020-10-13 07:02:17,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:02:17,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:02:17,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845019388] [2020-10-13 07:02:17,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:02:17,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:02:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:02:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:02:17,339 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:02:17,689 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:02:18,286 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:02:18,877 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:02:19,508 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 174 [2020-10-13 07:02:23,125 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2020-10-13 07:02:26,231 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-10-13 07:02:28,497 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-13 07:02:29,126 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 169 [2020-10-13 07:02:30,251 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 168 [2020-10-13 07:02:38,860 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-13 07:02:39,488 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 178 [2020-10-13 07:02:42,286 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 178 [2020-10-13 07:02:48,945 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 161 [2020-10-13 07:02:49,599 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 165 [2020-10-13 07:02:51,768 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 163 [2020-10-13 07:03:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:03:02,575 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:03:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:03:02,578 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 955 [2020-10-13 07:03:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:03:02,618 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:03:02,619 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:03:02,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:03:02,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:03:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:03:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:03:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:03:02,818 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 955 [2020-10-13 07:03:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:03:02,827 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:03:02,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:03:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:03:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-13 07:03:02,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:03:02,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:02,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:03:02,890 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:03:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:03:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1943657157, now seen corresponding path program 1 times [2020-10-13 07:03:02,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:03:02,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548233524] [2020-10-13 07:03:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:03:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:08,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:08,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-13 07:03:08,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:03:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-13 07:03:08,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:03:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:03:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:03:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:03:09,162 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:03:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:03:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:09,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:09,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:03:09,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 07:03:09,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:03:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:03:09,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:03:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:03:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:09,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:09,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:03:09,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 07:03:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:03:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:03:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:03:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:03:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:03:11,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548233524] [2020-10-13 07:03:11,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:03:11,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:03:11,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924174553] [2020-10-13 07:03:11,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:03:11,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:03:11,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:03:11,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:03:11,261 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:03:11,419 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:03:12,659 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 07:03:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:03:30,835 INFO L93 Difference]: Finished difference Result 4486 states and 7525 transitions. [2020-10-13 07:03:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:03:30,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1025 [2020-10-13 07:03:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:03:30,859 INFO L225 Difference]: With dead ends: 4486 [2020-10-13 07:03:30,859 INFO L226 Difference]: Without dead ends: 3227 [2020-10-13 07:03:30,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:03:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-10-13 07:03:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3147. [2020-10-13 07:03:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3147 states. [2020-10-13 07:03:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4653 transitions. [2020-10-13 07:03:30,966 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4653 transitions. Word has length 1025 [2020-10-13 07:03:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:03:30,966 INFO L479 AbstractCegarLoop]: Abstraction has 3147 states and 4653 transitions. [2020-10-13 07:03:30,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:03:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4653 transitions. [2020-10-13 07:03:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-13 07:03:31,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:03:31,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:31,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:03:31,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:03:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:03:31,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1918638242, now seen corresponding path program 1 times [2020-10-13 07:03:31,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:03:31,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360523845] [2020-10-13 07:03:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:03:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:36,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:36,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-13 07:03:36,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:03:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5417 [2020-10-13 07:03:36,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:03:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:03:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:03:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:03:38,775 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-13 07:03:38,970 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-13 07:03:39,191 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-13 07:03:39,378 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-13 07:03:39,540 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-13 07:03:39,802 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 07:03:39,955 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-13 07:03:40,355 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:03:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:03:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:40,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:40,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:03:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 07:03:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:03:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:03:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:03:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:40,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:03:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-13 07:03:40,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:03:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:03:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:03:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:41,353 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-13 07:03:41,606 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-13 07:03:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:03:51,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360523845] [2020-10-13 07:03:51,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:03:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:03:51,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440655973] [2020-10-13 07:03:51,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:03:51,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:03:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:03:51,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:03:51,722 INFO L87 Difference]: Start difference. First operand 3147 states and 4653 transitions. Second operand 18 states. [2020-10-13 07:03:51,954 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 07:03:54,069 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 67 [2020-10-13 07:03:54,300 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2020-10-13 07:03:54,628 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 75 [2020-10-13 07:03:55,321 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 179 [2020-10-13 07:03:56,107 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 199 [2020-10-13 07:03:57,835 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 246 DAG size of output: 196 [2020-10-13 07:04:01,197 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 248 DAG size of output: 193 [2020-10-13 07:04:10,764 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 171 [2020-10-13 07:04:11,566 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 185 [2020-10-13 07:04:12,976 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 182 [2020-10-13 07:04:22,712 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 179 [2020-10-13 07:04:24,081 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 175 [2020-10-13 07:04:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:04:48,033 INFO L93 Difference]: Finished difference Result 8398 states and 13375 transitions. [2020-10-13 07:04:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:04:48,035 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1077 [2020-10-13 07:04:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:04:48,068 INFO L225 Difference]: With dead ends: 8398 [2020-10-13 07:04:48,069 INFO L226 Difference]: Without dead ends: 6011 [2020-10-13 07:04:48,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-10-13 07:04:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-10-13 07:04:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 5878. [2020-10-13 07:04:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5878 states. [2020-10-13 07:04:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8787 transitions. [2020-10-13 07:04:48,256 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8787 transitions. Word has length 1077 [2020-10-13 07:04:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:04:48,257 INFO L479 AbstractCegarLoop]: Abstraction has 5878 states and 8787 transitions. [2020-10-13 07:04:48,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:04:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8787 transitions. [2020-10-13 07:04:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-13 07:04:48,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:04:48,284 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:48,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:04:48,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:04:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:04:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1755030613, now seen corresponding path program 1 times [2020-10-13 07:04:48,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:04:48,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093711515] [2020-10-13 07:04:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:04:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:53,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:53,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-13 07:04:53,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:04:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 07:04:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:04:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:04:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:04:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:56,826 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-13 07:04:57,059 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 07:04:57,308 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 07:04:57,569 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 07:04:57,859 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 07:04:58,140 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-13 07:04:58,412 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-13 07:04:58,637 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-13 07:04:58,837 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:04:59,073 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-13 07:04:59,288 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-13 07:04:59,457 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-13 07:04:59,880 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:04:59,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:04:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:59,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:04:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 07:04:59,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:04:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:04:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:05:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:00,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:00,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:05:00,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:00,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-13 07:05:00,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:00,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:05:00,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:05:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:05:00,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:00,947 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-13 07:05:01,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:05:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:01,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:01,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:05:01,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 07:05:01,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:05:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:05:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:05:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:01,422 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 07:05:01,665 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-13 07:05:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 3 proven. 162 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:05:18,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093711515] [2020-10-13 07:05:18,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:05:18,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 07:05:18,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896251306] [2020-10-13 07:05:18,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 07:05:18,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:05:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 07:05:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2020-10-13 07:05:18,964 INFO L87 Difference]: Start difference. First operand 5878 states and 8787 transitions. Second operand 25 states. [2020-10-13 07:05:19,251 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:05:21,942 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-13 07:05:22,645 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 149 [2020-10-13 07:05:23,809 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 86 [2020-10-13 07:05:24,165 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2020-10-13 07:05:24,630 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 86