/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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:03,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:03,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:03,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:03,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:03,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:03,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:03,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:03,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:03,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:03,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:03,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:03,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:03,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:03,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:03,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:03,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:03,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:03,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:03,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:03,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:03,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:03,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:03,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:03,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:03,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:03,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:03,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:03,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:03,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:03,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:03,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:03,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:03,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:03,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:03,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:03,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:03,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:03,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:03,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:03,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:03,743 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 10:13:03,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:03,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:03,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:03,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:03,783 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:03,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:03,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:03,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:03,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:03,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:03,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:03,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:03,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:03,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:03,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:03,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:03,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:03,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:03,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:03,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:03,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:03,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:03,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:03,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:03,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:03,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:03,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:03,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:03,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:03,788 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 10:13:04,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:04,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:04,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:04,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:04,297 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:04,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 10:13:04,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9605bee8/72313fbc007f4e36a9aedcc0c2ae2bdb/FLAG75dc5503c [2020-09-25 10:13:05,192 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:05,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 10:13:05,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9605bee8/72313fbc007f4e36a9aedcc0c2ae2bdb/FLAG75dc5503c [2020-09-25 10:13:05,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9605bee8/72313fbc007f4e36a9aedcc0c2ae2bdb [2020-09-25 10:13:05,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:05,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:05,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:05,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:05,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:05,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:05" (1/1) ... [2020-09-25 10:13:05,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d064956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:05, skipping insertion in model container [2020-09-25 10:13:05,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:05" (1/1) ... [2020-09-25 10:13:05,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:05,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:06,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:06,184 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:06,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:06,374 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:06,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06 WrapperNode [2020-09-25 10:13:06,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:06,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:06,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:06,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:06,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (1/1) ... [2020-09-25 10:13:06,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:06,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:06,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:06,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:06,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (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 10:13:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:09,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:09,303 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:09,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:09 BoogieIcfgContainer [2020-09-25 10:13:09,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:09,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:09,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:09,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:09,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:05" (1/3) ... [2020-09-25 10:13:09,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e75e70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:09, skipping insertion in model container [2020-09-25 10:13:09,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:06" (2/3) ... [2020-09-25 10:13:09,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e75e70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:09, skipping insertion in model container [2020-09-25 10:13:09,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:09" (3/3) ... [2020-09-25 10:13:09,334 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 10:13:09,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:09,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:09,397 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:09,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:09,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:09,441 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:09,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:09,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:09,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:09,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:09,442 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 10:13:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 10:13:09,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:09,501 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] [2020-09-25 10:13:09,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 10:13:09,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:09,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134692147] [2020-09-25 10:13:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:10,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:13:10,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 10:13:10,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:10,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:13:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:13:10,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:13:10,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:10,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:10,624 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 10:13:10,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134692147] [2020-09-25 10:13:10,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:10,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:10,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643031162] [2020-09-25 10:13:10,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:10,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:10,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:10,659 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 10:13:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:14,367 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-25 10:13:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:14,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 10:13:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:14,399 INFO L225 Difference]: With dead ends: 1935 [2020-09-25 10:13:14,399 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 10:13:14,413 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 10:13:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 10:13:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-25 10:13:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 10:13:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 10:13:14,551 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-25 10:13:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:14,551 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 10:13:14,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 10:13:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 10:13:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:14,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:14,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:14,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-25 10:13:14,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:14,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991797648] [2020-09-25 10:13:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:16,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 10:13:16,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:16,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-09-25 10:13:16,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:16,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:13:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 10:13:16,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:16,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:16,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:13:16,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:16,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:13:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:16,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:13:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 10:13:16,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:16,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:17,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991797648] [2020-09-25 10:13:17,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:17,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:13:17,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080340176] [2020-09-25 10:13:17,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:17,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:17,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:17,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:17,076 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-25 10:13:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:21,893 INFO L93 Difference]: Finished difference Result 2632 states and 3210 transitions. [2020-09-25 10:13:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:21,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-09-25 10:13:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:21,907 INFO L225 Difference]: With dead ends: 2632 [2020-09-25 10:13:21,907 INFO L226 Difference]: Without dead ends: 1652 [2020-09-25 10:13:21,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 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 10:13:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-09-25 10:13:21,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1412. [2020-09-25 10:13:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-09-25 10:13:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1694 transitions. [2020-09-25 10:13:21,988 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1694 transitions. Word has length 121 [2020-09-25 10:13:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:21,991 INFO L479 AbstractCegarLoop]: Abstraction has 1412 states and 1694 transitions. [2020-09-25 10:13:21,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1694 transitions. [2020-09-25 10:13:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 10:13:21,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:21,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:21,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:21,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2121372736, now seen corresponding path program 1 times [2020-09-25 10:13:22,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:22,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203349424] [2020-09-25 10:13:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:26,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 10:13:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4229 [2020-09-25 10:13:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:26,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:13:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:26,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:26,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:26,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:26,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:26,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:26,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 10:13:26,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 10:13:26,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:26,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:13:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:27,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203349424] [2020-09-25 10:13:27,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:27,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:27,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224264852] [2020-09-25 10:13:27,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:27,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:27,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:27,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:27,109 INFO L87 Difference]: Start difference. First operand 1412 states and 1694 transitions. Second operand 8 states. [2020-09-25 10:13:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:33,742 INFO L93 Difference]: Finished difference Result 4379 states and 5466 transitions. [2020-09-25 10:13:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:33,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-09-25 10:13:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:33,759 INFO L225 Difference]: With dead ends: 4379 [2020-09-25 10:13:33,759 INFO L226 Difference]: Without dead ends: 2984 [2020-09-25 10:13:33,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:13:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-09-25 10:13:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2914. [2020-09-25 10:13:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2914 states. [2020-09-25 10:13:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 3414 transitions. [2020-09-25 10:13:33,871 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 3414 transitions. Word has length 125 [2020-09-25 10:13:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:33,873 INFO L479 AbstractCegarLoop]: Abstraction has 2914 states and 3414 transitions. [2020-09-25 10:13:33,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 3414 transitions. [2020-09-25 10:13:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 10:13:33,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:33,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:33,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:33,881 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:33,882 INFO L82 PathProgramCache]: Analyzing trace with hash 279477351, now seen corresponding path program 1 times [2020-09-25 10:13:33,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:33,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228589983] [2020-09-25 10:13:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 10:13:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2256 [2020-09-25 10:13:36,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-25 10:13:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:36,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:36,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 10:13:36,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 10:13:36,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:13:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:36,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228589983] [2020-09-25 10:13:36,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:36,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:36,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196070692] [2020-09-25 10:13:36,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:36,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:36,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:36,808 INFO L87 Difference]: Start difference. First operand 2914 states and 3414 transitions. Second operand 8 states. [2020-09-25 10:13:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:43,088 INFO L93 Difference]: Finished difference Result 6047 states and 7462 transitions. [2020-09-25 10:13:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:43,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-25 10:13:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:43,116 INFO L225 Difference]: With dead ends: 6047 [2020-09-25 10:13:43,116 INFO L226 Difference]: Without dead ends: 4489 [2020-09-25 10:13:43,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:43,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2020-09-25 10:13:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4332. [2020-09-25 10:13:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4332 states. [2020-09-25 10:13:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 5288 transitions. [2020-09-25 10:13:43,256 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 5288 transitions. Word has length 180 [2020-09-25 10:13:43,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:43,258 INFO L479 AbstractCegarLoop]: Abstraction has 4332 states and 5288 transitions. [2020-09-25 10:13:43,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 5288 transitions. [2020-09-25 10:13:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 10:13:43,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:43,267 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:43,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:43,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:43,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2038122493, now seen corresponding path program 1 times [2020-09-25 10:13:43,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:43,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771287408] [2020-09-25 10:13:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 10:13:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2481 [2020-09-25 10:13:45,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-25 10:13:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 10:13:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:13:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 10:13:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 10:13:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 10:13:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 10:13:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:13:46,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 10:13:46,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:46,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771287408] [2020-09-25 10:13:46,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:46,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:13:46,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693231399] [2020-09-25 10:13:46,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:46,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:46,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:46,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:46,615 INFO L87 Difference]: Start difference. First operand 4332 states and 5288 transitions. Second operand 7 states. [2020-09-25 10:13:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:51,969 INFO L93 Difference]: Finished difference Result 9827 states and 12577 transitions. [2020-09-25 10:13:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:51,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-25 10:13:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:52,003 INFO L225 Difference]: With dead ends: 9827 [2020-09-25 10:13:52,004 INFO L226 Difference]: Without dead ends: 6764 [2020-09-25 10:13:52,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2020-09-25 10:13:52,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6626. [2020-09-25 10:13:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6626 states. [2020-09-25 10:13:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 8343 transitions. [2020-09-25 10:13:52,161 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 8343 transitions. Word has length 246 [2020-09-25 10:13:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:52,162 INFO L479 AbstractCegarLoop]: Abstraction has 6626 states and 8343 transitions. [2020-09-25 10:13:52,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 8343 transitions. [2020-09-25 10:13:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 10:13:52,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:52,170 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:52,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:52,170 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:52,171 INFO L82 PathProgramCache]: Analyzing trace with hash -687610601, now seen corresponding path program 1 times [2020-09-25 10:13:52,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:52,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439186538] [2020-09-25 10:13:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking...