/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:39:15,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:39:15,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:39:15,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:39:15,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:39:15,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:39:15,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:39:15,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:39:15,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:39:15,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:39:15,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:39:15,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:39:15,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:39:15,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:39:15,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:39:15,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:39:15,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:39:15,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:39:15,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:39:15,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:39:15,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:39:15,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:39:15,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:39:15,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:39:15,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:39:15,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:39:15,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:39:15,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:39:15,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:39:15,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:39:15,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:39:15,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:39:15,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:39:15,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:39:15,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:39:15,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:39:15,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:39:15,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:39:15,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:39:15,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:39:15,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:39:15,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:39:15,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:39:15,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:39:15,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:39:15,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:39:15,438 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:39:15,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:39:15,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:39:15,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:39:15,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:39:15,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:39:15,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:39:15,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:39:15,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:39:15,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:39:15,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:39:15,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:39:15,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:39:15,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:39:15,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:39:15,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:39:15,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:39:15,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:39:15,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:39:15,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:39:15,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:39:15,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:39:15,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:39:15,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:39:15,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:39:15,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:39:15,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:39:15,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:39:15,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:39:15,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:39:15,765 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:39:15,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2020-10-14 22:39:15,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861a15ea9/0711fb31585441d6ba9efbd5e52e82bd/FLAG103d1289e [2020-10-14 22:39:16,606 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:39:16,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2020-10-14 22:39:16,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861a15ea9/0711fb31585441d6ba9efbd5e52e82bd/FLAG103d1289e [2020-10-14 22:39:16,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861a15ea9/0711fb31585441d6ba9efbd5e52e82bd [2020-10-14 22:39:16,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:39:16,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:39:16,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:39:16,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:39:16,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:39:16,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:39:16" (1/1) ... [2020-10-14 22:39:16,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:16, skipping insertion in model container [2020-10-14 22:39:16,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:39:16" (1/1) ... [2020-10-14 22:39:16,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:39:16,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:39:18,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:39:18,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:39:18,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:39:18,546 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:39:18,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18 WrapperNode [2020-10-14 22:39:18,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:39:18,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:39:18,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:39:18,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:39:18,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... [2020-10-14 22:39:18,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:39:18,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:39:18,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:39:18,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:39:18,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:39:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:39:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:39:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:39:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:39:18,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:39:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:39:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:39:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:39:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:39:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:39:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:39:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:39:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:39:27,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:39:27,646 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:39:27,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:39:27 BoogieIcfgContainer [2020-10-14 22:39:27,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:39:27,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:39:27,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:39:27,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:39:27,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:39:16" (1/3) ... [2020-10-14 22:39:27,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8dda33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:39:27, skipping insertion in model container [2020-10-14 22:39:27,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:39:18" (2/3) ... [2020-10-14 22:39:27,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8dda33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:39:27, skipping insertion in model container [2020-10-14 22:39:27,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:39:27" (3/3) ... [2020-10-14 22:39:27,676 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label58.c [2020-10-14 22:39:27,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:39:27,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:39:27,719 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:39:27,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:39:27,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:39:27,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:39:27,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:39:27,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:39:27,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:39:27,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:39:27,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:39:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:39:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 22:39:27,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:27,879 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] [2020-10-14 22:39:27,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1296937305, now seen corresponding path program 1 times [2020-10-14 22:39:27,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:27,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044072350] [2020-10-14 22:39:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:28,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 22:39:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-14 22:39:28,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:28,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:39:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 22:39:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:39:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:28,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:28,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:39:28,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:28,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:39:28,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044072350] [2020-10-14 22:39:28,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:39:28,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:39:28,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145097632] [2020-10-14 22:39:28,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:39:28,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:28,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:39:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:39:28,726 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:39:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:38,865 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:39:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:39:38,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-14 22:39:38,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:38,893 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:39:38,894 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:39:38,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:39:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:39:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:39:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:39:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:39:39,024 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 51 [2020-10-14 22:39:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:39,025 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:39:39,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:39:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:39:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 22:39:39,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:39,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:39,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:39:39,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2066902641, now seen corresponding path program 1 times [2020-10-14 22:39:39,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:39,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528046563] [2020-10-14 22:39:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 22:39:40,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:39:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-14 22:39:40,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:39:40,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:39:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:39:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:39:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:40,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:40,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:40,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 22:39:40,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:40,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:39:40,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 22:39:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:39:40,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528046563] [2020-10-14 22:39:40,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:39:40,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:39:40,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846263067] [2020-10-14 22:39:40,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:40,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:40,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:40,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:40,662 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:39:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:52,568 INFO L93 Difference]: Finished difference Result 2929 states and 4529 transitions. [2020-10-14 22:39:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:39:52,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-14 22:39:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:52,581 INFO L225 Difference]: With dead ends: 2929 [2020-10-14 22:39:52,581 INFO L226 Difference]: Without dead ends: 1933 [2020-10-14 22:39:52,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:39:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-10-14 22:39:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1902. [2020-10-14 22:39:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-10-14 22:39:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2466 transitions. [2020-10-14 22:39:52,663 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2466 transitions. Word has length 122 [2020-10-14 22:39:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:52,665 INFO L479 AbstractCegarLoop]: Abstraction has 1902 states and 2466 transitions. [2020-10-14 22:39:52,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2466 transitions. [2020-10-14 22:39:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 22:39:52,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:52,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:52,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:39:52,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:52,674 INFO L82 PathProgramCache]: Analyzing trace with hash -598903647, now seen corresponding path program 1 times [2020-10-14 22:39:52,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:52,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136938271] [2020-10-14 22:39:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:53,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:53,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 22:39:53,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:39:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-14 22:39:53,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:53,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:39:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:39:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:53,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:53,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:39:53,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:53,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:54,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:39:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 22:39:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:54,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:39:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:39:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:39:54,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136938271] [2020-10-14 22:39:54,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:54,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:39:54,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634011407] [2020-10-14 22:39:54,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:39:54,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:54,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:39:54,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:39:54,455 INFO L87 Difference]: Start difference. First operand 1902 states and 2466 transitions. Second operand 8 states. [2020-10-14 22:40:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:13,172 INFO L93 Difference]: Finished difference Result 4315 states and 5511 transitions. [2020-10-14 22:40:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:40:13,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-14 22:40:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:13,189 INFO L225 Difference]: With dead ends: 4315 [2020-10-14 22:40:13,190 INFO L226 Difference]: Without dead ends: 2388 [2020-10-14 22:40:13,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:40:13,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-10-14 22:40:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2344. [2020-10-14 22:40:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2344 states. [2020-10-14 22:40:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 2920 transitions. [2020-10-14 22:40:13,270 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 2920 transitions. Word has length 125 [2020-10-14 22:40:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:13,271 INFO L479 AbstractCegarLoop]: Abstraction has 2344 states and 2920 transitions. [2020-10-14 22:40:13,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:40:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 2920 transitions. [2020-10-14 22:40:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 22:40:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:13,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:40:13,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:40:13,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash -397061329, now seen corresponding path program 1 times [2020-10-14 22:40:13,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:13,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580402364] [2020-10-14 22:40:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:13,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 22:40:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 22:40:13,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:13,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:13,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:40:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 22:40:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:40:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:13,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:13,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:13,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:40:13,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:13,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:13,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:13,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:13,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:13,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:40:13,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:13,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:13,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:40:13,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:40:14,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580402364] [2020-10-14 22:40:14,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:14,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:40:14,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406527332] [2020-10-14 22:40:14,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:40:14,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:14,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:40:14,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:40:14,068 INFO L87 Difference]: Start difference. First operand 2344 states and 2920 transitions. Second operand 5 states. [2020-10-14 22:40:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:26,037 INFO L93 Difference]: Finished difference Result 5166 states and 6741 transitions. [2020-10-14 22:40:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:40:26,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 22:40:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:26,057 INFO L225 Difference]: With dead ends: 5166 [2020-10-14 22:40:26,057 INFO L226 Difference]: Without dead ends: 2811 [2020-10-14 22:40:26,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:40:26,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2020-10-14 22:40:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2800. [2020-10-14 22:40:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2800 states. [2020-10-14 22:40:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 3397 transitions. [2020-10-14 22:40:26,145 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 3397 transitions. Word has length 138 [2020-10-14 22:40:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:26,146 INFO L479 AbstractCegarLoop]: Abstraction has 2800 states and 3397 transitions. [2020-10-14 22:40:26,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:40:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 3397 transitions. [2020-10-14 22:40:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 22:40:26,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:26,150 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, 2, 2, 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] [2020-10-14 22:40:26,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:40:26,151 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:26,151 INFO L82 PathProgramCache]: Analyzing trace with hash -389455761, now seen corresponding path program 1 times [2020-10-14 22:40:26,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:26,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693761901] [2020-10-14 22:40:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:40:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:40:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-10-14 22:40:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:40:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:40:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:40:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:40:27,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:40:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:27,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:27,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:40:27,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:40:27,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:27,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:40:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:40:28,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693761901] [2020-10-14 22:40:28,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:28,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:40:28,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007898133] [2020-10-14 22:40:28,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:40:28,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:28,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:40:28,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:40:28,019 INFO L87 Difference]: Start difference. First operand 2800 states and 3397 transitions. Second operand 7 states. [2020-10-14 22:40:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:41,187 INFO L93 Difference]: Finished difference Result 6541 states and 8347 transitions. [2020-10-14 22:40:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:40:41,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-14 22:40:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:41,211 INFO L225 Difference]: With dead ends: 6541 [2020-10-14 22:40:41,212 INFO L226 Difference]: Without dead ends: 4180 [2020-10-14 22:40:41,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:40:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2020-10-14 22:40:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4168. [2020-10-14 22:40:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4168 states. [2020-10-14 22:40:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 5091 transitions. [2020-10-14 22:40:41,337 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 5091 transitions. Word has length 208 [2020-10-14 22:40:41,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:41,338 INFO L479 AbstractCegarLoop]: Abstraction has 4168 states and 5091 transitions. [2020-10-14 22:40:41,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:40:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 5091 transitions. [2020-10-14 22:40:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 22:40:41,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:41,342 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:40:41,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:40:41,343 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:41,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1832108417, now seen corresponding path program 1 times [2020-10-14 22:40:41,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:41,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568972882] [2020-10-14 22:40:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:46,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 22:40:46,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:40:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:40:46,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:46,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:40:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:40:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-14 22:40:46,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:46,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:46,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:40:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:46,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:40:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:46,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:46,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:46,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:46,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 22:40:46,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:46,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:40:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:40:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:46,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:47,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:47,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:40:47,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:40:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 22:40:47,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:47,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:40:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:40:47,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568972882] [2020-10-14 22:40:47,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:47,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:40:47,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308695304] [2020-10-14 22:40:47,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:40:47,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:40:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:40:47,264 INFO L87 Difference]: Start difference. First operand 4168 states and 5091 transitions. Second operand 9 states. [2020-10-14 22:41:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:06,232 INFO L93 Difference]: Finished difference Result 11315 states and 14752 transitions. [2020-10-14 22:41:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:41:06,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-10-14 22:41:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:06,272 INFO L225 Difference]: With dead ends: 11315 [2020-10-14 22:41:06,272 INFO L226 Difference]: Without dead ends: 7132 [2020-10-14 22:41:06,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:41:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7132 states. [2020-10-14 22:41:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7132 to 7011. [2020-10-14 22:41:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7011 states. [2020-10-14 22:41:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 8340 transitions. [2020-10-14 22:41:06,479 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 8340 transitions. Word has length 213 [2020-10-14 22:41:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:06,481 INFO L479 AbstractCegarLoop]: Abstraction has 7011 states and 8340 transitions. [2020-10-14 22:41:06,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:41:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 8340 transitions. [2020-10-14 22:41:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 22:41:06,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:06,489 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:06,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:41:06,489 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash -703031726, now seen corresponding path program 1 times [2020-10-14 22:41:06,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:06,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679717371] [2020-10-14 22:41:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:10,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 22:41:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:41:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4102 [2020-10-14 22:41:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:10,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:41:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:41:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-14 22:41:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:10,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:10,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:10,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:41:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:10,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:41:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:11,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:11,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:11,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 22:41:11,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:11,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:41:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:41:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:11,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:41:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:41:11,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:11,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:41:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:41:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:41:11,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:41:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:11,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:41:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 22:41:11,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679717371] [2020-10-14 22:41:11,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:11,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:41:11,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122308430] [2020-10-14 22:41:11,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:41:11,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:41:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:41:11,688 INFO L87 Difference]: Start difference. First operand 7011 states and 8340 transitions. Second operand 9 states. [2020-10-14 22:41:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:33,113 INFO L93 Difference]: Finished difference Result 16921 states and 22172 transitions. [2020-10-14 22:41:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:41:33,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 295 [2020-10-14 22:41:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:33,185 INFO L225 Difference]: With dead ends: 16921 [2020-10-14 22:41:33,185 INFO L226 Difference]: Without dead ends: 9900 [2020-10-14 22:41:33,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:41:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9900 states. [2020-10-14 22:41:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9900 to 9664. [2020-10-14 22:41:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9664 states. [2020-10-14 22:41:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 11287 transitions. [2020-10-14 22:41:33,466 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 11287 transitions. Word has length 295 [2020-10-14 22:41:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:33,466 INFO L479 AbstractCegarLoop]: Abstraction has 9664 states and 11287 transitions. [2020-10-14 22:41:33,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:41:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 11287 transitions. [2020-10-14 22:41:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 22:41:33,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:33,474 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:33,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:41:33,474 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash -222591812, now seen corresponding path program 1 times [2020-10-14 22:41:33,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:33,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282065028] [2020-10-14 22:41:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 22:41:38,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:41:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 22:41:38,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:41:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:41:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:41:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:41:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:38,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:41:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:41:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:38,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:39,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:39,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:41:39,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 22:41:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:39,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:41:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:39,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:41:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:41:39,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:39,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:41:39,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:39,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:39,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:41:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:41:40,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282065028] [2020-10-14 22:41:40,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:40,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:41:40,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130785960] [2020-10-14 22:41:40,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:41:40,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:40,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:41:40,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:41:40,112 INFO L87 Difference]: Start difference. First operand 9664 states and 11287 transitions. Second operand 7 states. [2020-10-14 22:41:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:57,934 INFO L93 Difference]: Finished difference Result 20394 states and 23846 transitions. [2020-10-14 22:41:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:41:57,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-14 22:41:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:57,969 INFO L225 Difference]: With dead ends: 20394 [2020-10-14 22:41:57,970 INFO L226 Difference]: Without dead ends: 11171 [2020-10-14 22:41:57,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:41:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11171 states. [2020-10-14 22:41:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11171 to 11073. [2020-10-14 22:41:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11073 states. [2020-10-14 22:41:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11073 states to 11073 states and 12845 transitions. [2020-10-14 22:41:58,195 INFO L78 Accepts]: Start accepts. Automaton has 11073 states and 12845 transitions. Word has length 318 [2020-10-14 22:41:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:58,196 INFO L479 AbstractCegarLoop]: Abstraction has 11073 states and 12845 transitions. [2020-10-14 22:41:58,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:41:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11073 states and 12845 transitions. [2020-10-14 22:41:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 22:41:58,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:58,210 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:58,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:41:58,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash 168685212, now seen corresponding path program 1 times [2020-10-14 22:41:58,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:58,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129109417] [2020-10-14 22:41:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:03,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:42:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:42:03,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:42:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:42:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:03,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:03,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:42:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:42:03,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:03,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:42:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:42:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:42:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:42:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 22:42:03,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:03,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:42:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:42:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:42:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:04,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:04,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:42:04,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:04,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 22:42:04,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:04,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:42:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:42:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:42:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:04,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:42:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:04,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 140 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:42:04,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129109417] [2020-10-14 22:42:04,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:42:04,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:42:04,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954159870] [2020-10-14 22:42:04,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:42:04,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:42:04,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:42:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:42:04,339 INFO L87 Difference]: Start difference. First operand 11073 states and 12845 transitions. Second operand 10 states. [2020-10-14 22:42:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:42:39,535 INFO L93 Difference]: Finished difference Result 30517 states and 36644 transitions. [2020-10-14 22:42:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 22:42:39,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 342 [2020-10-14 22:42:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:42:39,612 INFO L225 Difference]: With dead ends: 30517 [2020-10-14 22:42:39,613 INFO L226 Difference]: Without dead ends: 19885 [2020-10-14 22:42:39,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-14 22:42:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19885 states. [2020-10-14 22:42:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19885 to 19240. [2020-10-14 22:42:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19240 states. [2020-10-14 22:42:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19240 states to 19240 states and 22783 transitions. [2020-10-14 22:42:40,077 INFO L78 Accepts]: Start accepts. Automaton has 19240 states and 22783 transitions. Word has length 342 [2020-10-14 22:42:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:42:40,078 INFO L479 AbstractCegarLoop]: Abstraction has 19240 states and 22783 transitions. [2020-10-14 22:42:40,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:42:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 19240 states and 22783 transitions. [2020-10-14 22:42:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-14 22:42:40,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:42:40,088 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, 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, 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] [2020-10-14 22:42:40,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:42:40,089 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:42:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:42:40,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1482477908, now seen corresponding path program 1 times [2020-10-14 22:42:40,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:42:40,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678570641] [2020-10-14 22:42:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:42:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:45,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 22:42:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:42:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 22:42:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:45,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:42:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:42:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:42:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:42:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:45,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:45,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:42:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:42:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:45,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:42:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:45,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:42:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:42:45,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:45,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:42:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:45,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:45,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:42:45,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:42:45,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:45,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:42:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:42:45,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:42:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:46,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:46,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:42:46,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 22:42:46,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:46,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:42:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:42:46,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:42:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:46,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:46,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:42:46,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:42:46,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:46,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:42:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 74 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-14 22:42:46,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678570641] [2020-10-14 22:42:46,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:42:46,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:42:46,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970822110] [2020-10-14 22:42:46,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:42:46,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:42:46,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:42:46,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:42:46,421 INFO L87 Difference]: Start difference. First operand 19240 states and 22783 transitions. Second operand 7 states.