/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:59:05,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:59:05,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:59:05,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:59:05,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:59:05,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:59:05,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:59:05,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:59:05,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:59:05,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:59:05,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:59:05,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:59:05,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:59:05,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:59:05,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:59:05,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:59:05,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:59:05,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:59:05,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:59:05,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:59:05,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:59:05,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:59:05,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:59:05,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:59:05,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:59:05,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:59:05,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:59:05,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:59:05,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:59:05,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:59:05,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:59:05,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:59:05,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:59:05,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:59:05,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:59:05,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:59:05,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:59:05,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:59:05,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:59:05,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:59:05,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:59:05,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:59:05,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:59:05,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:59:05,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:59:05,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:59:05,652 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:59:05,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:59:05,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:59:05,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:59:05,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:59:05,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:59:05,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:59:05,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:59:05,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:59:05,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:59:05,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:59:05,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:59:05,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:59:05,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:59:05,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:59:05,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:59:05,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:59:05,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:59:05,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:59:05,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:59:05,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:59:05,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:59:05,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:59:05,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:59:05,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:59:05,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:59:05,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:59:06,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:59:06,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:59:06,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:59:06,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:59:06,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label00.c [2020-10-13 06:59:06,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0a8437fe/0d324b99afef4e04b1bc6c583c95cca6/FLAGb2c636732 [2020-10-13 06:59:07,012 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:59:07,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label00.c [2020-10-13 06:59:07,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0a8437fe/0d324b99afef4e04b1bc6c583c95cca6/FLAGb2c636732 [2020-10-13 06:59:07,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0a8437fe/0d324b99afef4e04b1bc6c583c95cca6 [2020-10-13 06:59:07,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:59:07,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:59:07,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:59:07,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:59:07,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:59:07,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:07" (1/1) ... [2020-10-13 06:59:07,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:07, skipping insertion in model container [2020-10-13 06:59:07,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:07" (1/1) ... [2020-10-13 06:59:07,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:59:07,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:59:09,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:59:09,948 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:59:10,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:59:10,962 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:59:10,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10 WrapperNode [2020-10-13 06:59:10,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:59:10,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:59:10,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:59:10,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:59:10,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:10,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:11,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:11,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:11,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:11,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:11,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2020-10-13 06:59:11,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:59:11,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:59:11,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:59:11,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:59:11,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:59:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:59:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:59:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:59:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:59:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:59:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:59:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:59:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:59:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:59:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:59:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:59:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:59:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:59:18,285 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:59:18,286 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:59:18,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:18 BoogieIcfgContainer [2020-10-13 06:59:18,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:59:18,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:59:18,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:59:18,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:59:18,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:59:07" (1/3) ... [2020-10-13 06:59:18,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:18, skipping insertion in model container [2020-10-13 06:59:18,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (2/3) ... [2020-10-13 06:59:18,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:18, skipping insertion in model container [2020-10-13 06:59:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:18" (3/3) ... [2020-10-13 06:59:18,314 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label00.c [2020-10-13 06:59:18,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:59:18,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:59:18,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:59:18,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:59:18,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:59:18,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:59:18,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:59:18,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:59:18,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:59:18,405 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:59:18,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:59:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 06:59:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-13 06:59:18,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:59:18,582 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] [2020-10-13 06:59:18,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:59:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:59:18,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1727705073, now seen corresponding path program 1 times [2020-10-13 06:59:18,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:59:18,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405291266] [2020-10-13 06:59:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:59:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:25,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:25,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 966 [2020-10-13 06:59:25,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:59:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 06:59:25,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:59:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:59:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 06:59:25,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:59:29,093 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2020-10-13 06:59:29,525 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-13 06:59:29,746 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-13 06:59:30,022 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2020-10-13 06:59:30,291 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-13 06:59:30,580 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-13 06:59:30,818 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-13 06:59:31,048 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 06:59:31,209 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-13 06:59:31,424 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-13 06:59:31,605 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 06:59:31,979 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-13 06:59:32,269 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:59:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:59:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:32,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:32,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:59:32,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:59:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:59:32,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:59:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:59:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:59:32,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:59:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:59:45,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405291266] [2020-10-13 06:59:45,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:59:45,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 06:59:45,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290617317] [2020-10-13 06:59:45,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 06:59:45,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:59:45,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 06:59:45,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-13 06:59:45,152 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 20 states. [2020-10-13 06:59:45,555 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 06:59:46,273 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 178 [2020-10-13 06:59:46,970 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 178 [2020-10-13 06:59:47,748 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 193 [2020-10-13 06:59:52,650 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 218 DAG size of output: 181 [2020-10-13 06:59:56,396 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 237 DAG size of output: 195 [2020-10-13 06:59:58,998 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 171 [2020-10-13 06:59:59,737 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 183 [2020-10-13 07:00:01,362 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 201 DAG size of output: 174 [2020-10-13 07:00:11,806 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 169 [2020-10-13 07:00:12,471 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 180 [2020-10-13 07:00:15,642 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 177 [2020-10-13 07:00:23,573 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 165 [2020-10-13 07:00:24,306 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 174 [2020-10-13 07:00:26,851 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 169 [2020-10-13 07:00:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:00:40,627 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:00:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:00:40,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 950 [2020-10-13 07:00:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:00:40,672 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:00:40,672 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:00:40,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 07:00:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:00:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:00:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:00:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:00:40,876 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 950 [2020-10-13 07:00:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:00:40,879 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:00:40,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 07:00:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:00:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-13 07:00:40,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:00:40,931 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] [2020-10-13 07:00:40,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:00:40,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:00:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:00:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1436960674, now seen corresponding path program 1 times [2020-10-13 07:00:40,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:00:40,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97552710] [2020-10-13 07:00:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:00:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:42,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:46,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:46,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-13 07:00:46,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:00:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-13 07:00:46,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:00:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:00:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:00:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:47,178 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:00:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:00:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:00:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 07:00:47,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:00:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:00:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:00:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:00:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:47,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:47,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:00:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 07:00:47,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:00:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:00:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:00:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:49,521 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 07:00:49,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97552710] [2020-10-13 07:00:49,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:00:49,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:00:49,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508554073] [2020-10-13 07:00:49,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:00:49,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:00:49,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:00:49,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:00:49,527 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:00:49,706 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 07:00:50,856 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:01:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:01:10,437 INFO L93 Difference]: Finished difference Result 4487 states and 7525 transitions. [2020-10-13 07:01:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:01:10,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1020 [2020-10-13 07:01:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:01:10,460 INFO L225 Difference]: With dead ends: 4487 [2020-10-13 07:01:10,460 INFO L226 Difference]: Without dead ends: 3228 [2020-10-13 07:01:10,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:01:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2020-10-13 07:01:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3154. [2020-10-13 07:01:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-10-13 07:01:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4666 transitions. [2020-10-13 07:01:10,581 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4666 transitions. Word has length 1020 [2020-10-13 07:01:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:01:10,582 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 4666 transitions. [2020-10-13 07:01:10,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:01:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4666 transitions. [2020-10-13 07:01:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-13 07:01:10,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:01:10,660 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] [2020-10-13 07:01:10,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:01:10,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:01:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:01:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash -775810139, now seen corresponding path program 1 times [2020-10-13 07:01:10,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:01:10,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845829326] [2020-10-13 07:01:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:01:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:16,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:16,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1090 [2020-10-13 07:01:16,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:01:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-13 07:01:16,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:01:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:01:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:01:16,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:19,132 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-13 07:01:19,322 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-13 07:01:19,525 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-13 07:01:19,740 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2020-10-13 07:01:19,940 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-10-13 07:01:20,187 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2020-10-13 07:01:20,454 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2020-10-13 07:01:20,761 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2020-10-13 07:01:21,072 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2020-10-13 07:01:21,408 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 64 [2020-10-13 07:01:21,567 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:01:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:01:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:21,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:01:21,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 07:01:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:01:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:01:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:01:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:01:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:22,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:22,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:01:22,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-13 07:01:22,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:01:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:01:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:01:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:22,453 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-13 07:01:22,799 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-13 07:01:33,143 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 07:01:33,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845829326] [2020-10-13 07:01:33,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:01:33,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:01:33,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509678840] [2020-10-13 07:01:33,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:01:33,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:01:33,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:01:33,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:01:33,147 INFO L87 Difference]: Start difference. First operand 3154 states and 4666 transitions. Second operand 18 states. [2020-10-13 07:01:33,388 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 07:01:35,681 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2020-10-13 07:01:36,005 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2020-10-13 07:01:36,390 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2020-10-13 07:01:37,077 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-13 07:01:37,869 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 178 [2020-10-13 07:01:39,362 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 176 [2020-10-13 07:01:42,696 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 222 DAG size of output: 177 [2020-10-13 07:01:51,867 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 168 [2020-10-13 07:01:52,748 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 174 [2020-10-13 07:01:54,244 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 173 [2020-10-13 07:02:03,910 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 218 DAG size of output: 172 [2020-10-13 07:02:05,184 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 170 [2020-10-13 07:02:29,970 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 151 [2020-10-13 07:02:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:02:44,889 INFO L93 Difference]: Finished difference Result 9397 states and 15331 transitions. [2020-10-13 07:02:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 07:02:44,891 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1072 [2020-10-13 07:02:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:02:44,925 INFO L225 Difference]: With dead ends: 9397 [2020-10-13 07:02:44,926 INFO L226 Difference]: Without dead ends: 7003 [2020-10-13 07:02:44,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:02:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2020-10-13 07:02:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 6946. [2020-10-13 07:02:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6946 states. [2020-10-13 07:02:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 9959 transitions. [2020-10-13 07:02:45,141 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 9959 transitions. Word has length 1072 [2020-10-13 07:02:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:02:45,142 INFO L479 AbstractCegarLoop]: Abstraction has 6946 states and 9959 transitions. [2020-10-13 07:02:45,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:02:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 9959 transitions. [2020-10-13 07:02:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2020-10-13 07:02:45,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:02:45,176 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] [2020-10-13 07:02:45,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:02:45,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:02:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:02:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash 523289618, now seen corresponding path program 1 times [2020-10-13 07:02:45,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:02:45,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979674998] [2020-10-13 07:02:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:02:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:45,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1117 [2020-10-13 07:02:50,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:02:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-13 07:02:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:02:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:02:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:02:50,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:02:52,948 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82