/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:06,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:06,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:06,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:06,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:06,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:06,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:06,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:06,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:06,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:06,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:06,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:06,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:06,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:06,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:06,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:06,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:06,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:06,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:06,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:06,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:06,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:06,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:06,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:06,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:06,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:06,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:06,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:06,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:06,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:06,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:06,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:06,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:06,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:06,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:06,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:06,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:06,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:06,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:06,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:06,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:06,285 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 [2020-09-25 10:13:06,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:06,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:06,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:06,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:06,325 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:06,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:06,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:06,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:06,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:06,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:06,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:06,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:06,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:06,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:06,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:06,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:06,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:06,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:06,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:06,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:06,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:06,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:06,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:06,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:06,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:06,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:06,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:06,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:06,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:06,331 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:13:06,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:06,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:06,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:06,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:06,829 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:06,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 10:13:06,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9522d56b9/8d802143f3f54cddba8fcdfd7454ead5/FLAGf35d1c43c [2020-09-25 10:13:07,497 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:07,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 10:13:07,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9522d56b9/8d802143f3f54cddba8fcdfd7454ead5/FLAGf35d1c43c [2020-09-25 10:13:07,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9522d56b9/8d802143f3f54cddba8fcdfd7454ead5 [2020-09-25 10:13:07,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:07,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:07,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:07,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:07,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:07,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:07" (1/1) ... [2020-09-25 10:13:07,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:07, skipping insertion in model container [2020-09-25 10:13:07,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:07" (1/1) ... [2020-09-25 10:13:07,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:07,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:08,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:08,524 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:08,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:08,669 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:08,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08 WrapperNode [2020-09-25 10:13:08,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:08,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:08,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:08,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:08,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (1/1) ... [2020-09-25 10:13:08,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:08,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:08,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:08,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:08,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (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 [2020-09-25 10:13:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:10,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:10,605 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:10,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:10 BoogieIcfgContainer [2020-09-25 10:13:10,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:10,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:10,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:10,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:10,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:07" (1/3) ... [2020-09-25 10:13:10,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5031ded6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:10, skipping insertion in model container [2020-09-25 10:13:10,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:08" (2/3) ... [2020-09-25 10:13:10,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5031ded6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:10, skipping insertion in model container [2020-09-25 10:13:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:10" (3/3) ... [2020-09-25 10:13:10,628 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 10:13:10,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:10,650 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:10,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:10,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:10,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:10,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:10,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:10,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:10,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:10,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:10,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 10:13:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:13:10,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:10,757 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] [2020-09-25 10:13:10,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:10,766 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 10:13:10,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:10,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152944488] [2020-09-25 10:13:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:11,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 10:13:11,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-09-25 10:13:11,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:11,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:13:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:13:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:11,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:11,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:11,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:11,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:11,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152944488] [2020-09-25 10:13:11,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:11,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:11,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41835881] [2020-09-25 10:13:11,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:11,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:11,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:11,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:11,801 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 10:13:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:14,451 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 10:13:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:14,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 10:13:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:14,497 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 10:13:14,497 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 10:13:14,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 10:13:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 10:13:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 10:13:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 10:13:14,643 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 73 [2020-09-25 10:13:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:14,645 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 10:13:14,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 10:13:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:13:14,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:14,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:14,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:14,662 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:14,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1576204144, now seen corresponding path program 1 times [2020-09-25 10:13:14,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:14,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95339097] [2020-09-25 10:13:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 10:13:19,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 10:13:19,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:13:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:13:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:13:19,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:20,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:20,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 10:13:20,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:20,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:13:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:20,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95339097] [2020-09-25 10:13:20,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:20,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:20,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669845120] [2020-09-25 10:13:20,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:20,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:20,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:20,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:20,429 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 10 states. [2020-09-25 10:13:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:24,551 INFO L93 Difference]: Finished difference Result 2061 states and 2660 transitions. [2020-09-25 10:13:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:24,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-09-25 10:13:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:24,561 INFO L225 Difference]: With dead ends: 2061 [2020-09-25 10:13:24,561 INFO L226 Difference]: Without dead ends: 965 [2020-09-25 10:13:24,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:13:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-09-25 10:13:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 752. [2020-09-25 10:13:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2020-09-25 10:13:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 815 transitions. [2020-09-25 10:13:24,604 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 815 transitions. Word has length 152 [2020-09-25 10:13:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:24,604 INFO L479 AbstractCegarLoop]: Abstraction has 752 states and 815 transitions. [2020-09-25 10:13:24,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 815 transitions. [2020-09-25 10:13:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 10:13:24,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:24,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:24,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:24,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -724108110, now seen corresponding path program 1 times [2020-09-25 10:13:24,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:24,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960226220] [2020-09-25 10:13:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 10:13:29,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-25 10:13:29,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:29,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-09-25 10:13:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:29,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:13:29,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:30,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:13:30,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 10:13:30,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:30,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 10:13:30,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:30,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960226220] [2020-09-25 10:13:30,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:30,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:13:30,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005725345] [2020-09-25 10:13:30,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:30,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:30,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:30,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:30,563 INFO L87 Difference]: Start difference. First operand 752 states and 815 transitions. Second operand 7 states. [2020-09-25 10:13:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:32,563 INFO L93 Difference]: Finished difference Result 2118 states and 2322 transitions. [2020-09-25 10:13:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:32,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-09-25 10:13:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:32,571 INFO L225 Difference]: With dead ends: 2118 [2020-09-25 10:13:32,571 INFO L226 Difference]: Without dead ends: 1186 [2020-09-25 10:13:32,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-09-25 10:13:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1136. [2020-09-25 10:13:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2020-09-25 10:13:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1226 transitions. [2020-09-25 10:13:32,605 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1226 transitions. Word has length 262 [2020-09-25 10:13:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:32,606 INFO L479 AbstractCegarLoop]: Abstraction has 1136 states and 1226 transitions. [2020-09-25 10:13:32,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1226 transitions. [2020-09-25 10:13:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 10:13:32,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:32,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:32,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:32,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:32,615 INFO L82 PathProgramCache]: Analyzing trace with hash -505865555, now seen corresponding path program 1 times [2020-09-25 10:13:32,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:32,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90297004] [2020-09-25 10:13:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:37,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-25 10:13:37,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:13:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:37,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-09-25 10:13:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:13:37,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:37,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 10:13:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:13:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:37,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 10:13:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 10:13:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:13:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 10:13:38,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 10:13:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-25 10:13:38,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90297004] [2020-09-25 10:13:38,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:38,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:13:38,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938076744] [2020-09-25 10:13:38,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:38,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:38,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:38,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:38,786 INFO L87 Difference]: Start difference. First operand 1136 states and 1226 transitions. Second operand 7 states. [2020-09-25 10:13:41,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:41,025 INFO L93 Difference]: Finished difference Result 3068 states and 3350 transitions. [2020-09-25 10:13:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:41,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-09-25 10:13:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:41,036 INFO L225 Difference]: With dead ends: 3068 [2020-09-25 10:13:41,036 INFO L226 Difference]: Without dead ends: 1947 [2020-09-25 10:13:41,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-09-25 10:13:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1719. [2020-09-25 10:13:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-09-25 10:13:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 1838 transitions. [2020-09-25 10:13:41,084 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 1838 transitions. Word has length 380 [2020-09-25 10:13:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:41,085 INFO L479 AbstractCegarLoop]: Abstraction has 1719 states and 1838 transitions. [2020-09-25 10:13:41,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 1838 transitions. [2020-09-25 10:13:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-09-25 10:13:41,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:41,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:41,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:41,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:41,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1540699335, now seen corresponding path program 1 times [2020-09-25 10:13:41,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:41,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543142304] [2020-09-25 10:13:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-09-25 10:13:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:13:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-09-25 10:13:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:46,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:46,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 10:13:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 10:13:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 10:13:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 10:13:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 10:13:46,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 10:13:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:13:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-25 10:13:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:47,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:13:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 10:13:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:47,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-25 10:13:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 184 proven. 338 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 10:13:47,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543142304] [2020-09-25 10:13:47,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:47,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:47,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542727896] [2020-09-25 10:13:47,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:47,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:47,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:47,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:47,893 INFO L87 Difference]: Start difference. First operand 1719 states and 1838 transitions. Second operand 9 states. [2020-09-25 10:13:51,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:51,051 INFO L93 Difference]: Finished difference Result 4254 states and 4622 transitions. [2020-09-25 10:13:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:13:51,052 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 523 [2020-09-25 10:13:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:51,064 INFO L225 Difference]: With dead ends: 4254 [2020-09-25 10:13:51,065 INFO L226 Difference]: Without dead ends: 2739 [2020-09-25 10:13:51,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:13:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2020-09-25 10:13:51,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2308. [2020-09-25 10:13:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2020-09-25 10:13:51,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 2470 transitions. [2020-09-25 10:13:51,127 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 2470 transitions. Word has length 523 [2020-09-25 10:13:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:51,128 INFO L479 AbstractCegarLoop]: Abstraction has 2308 states and 2470 transitions. [2020-09-25 10:13:51,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 2470 transitions. [2020-09-25 10:13:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2020-09-25 10:13:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:51,144 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:51,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:51,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1685052321, now seen corresponding path program 1 times [2020-09-25 10:13:51,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:51,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007664461] [2020-09-25 10:13:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking...