/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/array-tiling/mbpr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:04:08,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:04:08,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:04:08,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:04:08,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:04:08,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:04:08,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:04:08,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:04:08,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:04:08,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:04:08,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:04:08,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:04:08,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:04:08,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:04:08,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:04:08,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:04:08,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:04:08,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:04:08,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:04:08,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:04:08,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:04:08,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:04:08,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:04:08,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:04:08,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:04:08,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:04:08,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:04:08,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:04:08,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:04:08,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:04:08,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:04:08,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:04:08,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:04:08,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:04:08,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:04:08,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:04:08,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:04:08,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:04:08,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:04:08,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:04:08,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:04:08,497 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 00:04:08,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:04:08,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:04:08,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:04:08,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:04:08,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:04:08,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:04:08,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:04:08,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:04:08,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:04:08,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:04:08,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:04:08,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:04:08,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:04:08,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:04:08,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:04:08,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:04:08,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:04:08,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:04:08,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:04:08,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:04:08,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:04:08,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:04:08,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:04:08,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:04:08,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:04:08,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:04:08,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:04:08,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:04:08,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:04:08,531 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:04:08,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:04:08,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:04:08,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:04:08,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:04:08,856 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:04:08,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr5.c [2020-10-14 00:04:08,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f552fca/272a63970c6244a383bd31aa81ca76df/FLAG88b75cd7c [2020-10-14 00:04:09,409 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:04:09,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr5.c [2020-10-14 00:04:09,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f552fca/272a63970c6244a383bd31aa81ca76df/FLAG88b75cd7c [2020-10-14 00:04:09,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f552fca/272a63970c6244a383bd31aa81ca76df [2020-10-14 00:04:09,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:04:09,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:04:09,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:04:09,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:04:09,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:04:09,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:04:09" (1/1) ... [2020-10-14 00:04:09,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238a6ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:09, skipping insertion in model container [2020-10-14 00:04:09,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:04:09" (1/1) ... [2020-10-14 00:04:09,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:04:09,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:04:10,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:04:10,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:04:10,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:04:10,254 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:04:10,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10 WrapperNode [2020-10-14 00:04:10,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:04:10,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:04:10,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:04:10,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:04:10,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... [2020-10-14 00:04:10,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:04:10,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:04:10,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:04:10,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:04:10,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:04:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:04:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:04:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:04:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:04:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:04:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:04:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:04:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:04:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:04:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:04:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:04:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:04:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:04:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:04:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:04:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:04:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:04:10,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:04:10,894 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 00:04:10,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:04:10 BoogieIcfgContainer [2020-10-14 00:04:10,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:04:10,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:04:10,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:04:10,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:04:10,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:04:09" (1/3) ... [2020-10-14 00:04:10,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17123f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:04:10, skipping insertion in model container [2020-10-14 00:04:10,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:10" (2/3) ... [2020-10-14 00:04:10,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17123f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:04:10, skipping insertion in model container [2020-10-14 00:04:10,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:04:10" (3/3) ... [2020-10-14 00:04:10,907 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2020-10-14 00:04:10,918 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:04:10,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:04:10,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:04:10,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:04:10,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:04:10,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:04:10,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:04:10,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:04:10,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:04:10,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:04:10,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:04:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-14 00:04:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 00:04:10,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:10,990 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] [2020-10-14 00:04:10,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:10,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1201829580, now seen corresponding path program 1 times [2020-10-14 00:04:11,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:11,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746918252] [2020-10-14 00:04:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 00:04:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:04:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-14 00:04:13,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:04:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:04:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:13,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:04:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:13,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:04:13,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:13,150 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 00:04:13,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746918252] [2020-10-14 00:04:13,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:13,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:04:13,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630528467] [2020-10-14 00:04:13,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:04:13,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:13,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:04:13,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:04:13,191 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-14 00:04:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:13,469 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2020-10-14 00:04:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:04:13,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 00:04:13,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:13,483 INFO L225 Difference]: With dead ends: 101 [2020-10-14 00:04:13,484 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 00:04:13,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:04:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 00:04:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 00:04:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 00:04:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-14 00:04:13,554 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 30 [2020-10-14 00:04:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:13,555 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-14 00:04:13,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:04:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-14 00:04:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 00:04:13,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:13,563 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] [2020-10-14 00:04:13,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:04:13,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash -692208943, now seen corresponding path program 1 times [2020-10-14 00:04:13,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:13,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818854229] [2020-10-14 00:04:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 00:04:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 00:04:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:04:18,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:04:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:04:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:04:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:04:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:18,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:18,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:04:18,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:18,811 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 00:04:18,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818854229] [2020-10-14 00:04:18,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:18,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 00:04:18,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116353943] [2020-10-14 00:04:18,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:04:18,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:04:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:04:18,819 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 7 states. [2020-10-14 00:04:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:19,519 INFO L93 Difference]: Finished difference Result 116 states and 152 transitions. [2020-10-14 00:04:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:04:19,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-14 00:04:19,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:19,523 INFO L225 Difference]: With dead ends: 116 [2020-10-14 00:04:19,524 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 00:04:19,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 00:04:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-14 00:04:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 00:04:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-14 00:04:19,542 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 30 [2020-10-14 00:04:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:19,543 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-14 00:04:19,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:04:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-14 00:04:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:04:19,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:19,546 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] [2020-10-14 00:04:19,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:04:19,546 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1544110858, now seen corresponding path program 1 times [2020-10-14 00:04:19,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:19,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231977619] [2020-10-14 00:04:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:19,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:04:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:04:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:04:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:04:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:24,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:04:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:04:24,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231977619] [2020-10-14 00:04:24,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:24,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:24,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085212867] [2020-10-14 00:04:24,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:24,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:24,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:24,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:24,693 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 4 states. [2020-10-14 00:04:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:24,892 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2020-10-14 00:04:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:24,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 00:04:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:24,897 INFO L225 Difference]: With dead ends: 71 [2020-10-14 00:04:24,897 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 00:04:24,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 00:04:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-14 00:04:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 00:04:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-14 00:04:24,921 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 50 [2020-10-14 00:04:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:24,922 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-14 00:04:24,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-14 00:04:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:04:24,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:24,928 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] [2020-10-14 00:04:24,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:04:24,929 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2049791860, now seen corresponding path program 1 times [2020-10-14 00:04:24,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:24,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139941937] [2020-10-14 00:04:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:04:30,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:04:30,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 00:04:30,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:04:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 00:04:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:30,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:30,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:30,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:04:30,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139941937] [2020-10-14 00:04:30,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:30,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:04:30,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747695872] [2020-10-14 00:04:30,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:04:30,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:30,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:04:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:04:30,132 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-14 00:04:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:30,403 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-14 00:04:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:04:30,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-14 00:04:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:30,406 INFO L225 Difference]: With dead ends: 63 [2020-10-14 00:04:30,406 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:04:30,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:04:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-14 00:04:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 00:04:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-10-14 00:04:30,430 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 50 [2020-10-14 00:04:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:30,433 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-10-14 00:04:30,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:04:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-10-14 00:04:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:04:30,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:30,438 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] [2020-10-14 00:04:30,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:04:30,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2047944818, now seen corresponding path program 1 times [2020-10-14 00:04:30,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:30,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091276195] [2020-10-14 00:04:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:04:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:04:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:04:35,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:35,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:04:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:04:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:04:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:35,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:35,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:35,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:04:35,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091276195] [2020-10-14 00:04:35,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:35,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:04:35,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968910440] [2020-10-14 00:04:35,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:04:35,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:35,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:04:35,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:35,796 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 8 states. [2020-10-14 00:04:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:36,282 INFO L93 Difference]: Finished difference Result 151 states and 183 transitions. [2020-10-14 00:04:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:04:36,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-14 00:04:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:36,285 INFO L225 Difference]: With dead ends: 151 [2020-10-14 00:04:36,285 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 00:04:36,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:04:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 00:04:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 91. [2020-10-14 00:04:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 00:04:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-14 00:04:36,301 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 50 [2020-10-14 00:04:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:36,301 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-14 00:04:36,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:04:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-14 00:04:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:04:36,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:36,303 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] [2020-10-14 00:04:36,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:04:36,303 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:36,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1403016976, now seen corresponding path program 1 times [2020-10-14 00:04:36,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:36,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605626057] [2020-10-14 00:04:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:04:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:04:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:04:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:04:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:41,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:04:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:41,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:04:41,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:41,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:04:41,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605626057] [2020-10-14 00:04:41,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:41,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:41,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352906306] [2020-10-14 00:04:41,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:41,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:41,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:41,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:41,384 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 4 states. [2020-10-14 00:04:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:41,507 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-10-14 00:04:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:41,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 00:04:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:41,512 INFO L225 Difference]: With dead ends: 107 [2020-10-14 00:04:41,512 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 00:04:41,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 00:04:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-14 00:04:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 00:04:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2020-10-14 00:04:41,530 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 50 [2020-10-14 00:04:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:41,531 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2020-10-14 00:04:41,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2020-10-14 00:04:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 00:04:41,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:41,532 INFO L422 BasicCegarLoop]: trace histogram [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 00:04:41,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:04:41,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:41,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2089626681, now seen corresponding path program 1 times [2020-10-14 00:04:41,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:41,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467246119] [2020-10-14 00:04:41,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:46,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 00:04:46,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 00:04:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:04:46,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:46,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:04:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:04:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 00:04:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:46,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:46,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:46,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:46,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:46,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:46,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:46,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:46,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:46,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:46,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:04:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:46,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:46,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:46,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:04:46,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467246119] [2020-10-14 00:04:46,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:46,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:04:46,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14403487] [2020-10-14 00:04:46,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:04:46,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:46,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:04:46,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:04:46,809 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand 9 states. [2020-10-14 00:04:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:47,253 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2020-10-14 00:04:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:04:47,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 00:04:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:47,255 INFO L225 Difference]: With dead ends: 145 [2020-10-14 00:04:47,256 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 00:04:47,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 00:04:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2020-10-14 00:04:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 00:04:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2020-10-14 00:04:47,287 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 59 [2020-10-14 00:04:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:47,288 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2020-10-14 00:04:47,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:04:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2020-10-14 00:04:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 00:04:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:47,297 INFO L422 BasicCegarLoop]: trace histogram [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 00:04:47,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:04:47,299 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:47,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1060267383, now seen corresponding path program 1 times [2020-10-14 00:04:47,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:47,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054654614] [2020-10-14 00:04:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:04:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:52,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:52,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:52,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:52,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:52,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:52,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:52,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:52,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:04:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:52,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:52,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:04:52,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:52,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:04:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:04:52,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054654614] [2020-10-14 00:04:52,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:52,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:52,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410928022] [2020-10-14 00:04:52,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:52,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:52,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:52,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:52,382 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand 4 states. [2020-10-14 00:04:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:52,489 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2020-10-14 00:04:52,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:52,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-14 00:04:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:52,491 INFO L225 Difference]: With dead ends: 108 [2020-10-14 00:04:52,491 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 00:04:52,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 00:04:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-14 00:04:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 00:04:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-14 00:04:52,500 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 59 [2020-10-14 00:04:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:52,500 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-14 00:04:52,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-14 00:04:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 00:04:52,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:52,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 00:04:52,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:04:52,502 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:52,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:52,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1574692846, now seen corresponding path program 2 times [2020-10-14 00:04:52,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:52,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441034786] [2020-10-14 00:04:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:04:57,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 00:04:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:04:57,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:04:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:04:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 00:04:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:57,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:57,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:04:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:04:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:04:57,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 00:04:57,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441034786] [2020-10-14 00:04:57,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:57,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:04:57,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763918059] [2020-10-14 00:04:57,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:04:57,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:57,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:04:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:57,740 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 10 states. [2020-10-14 00:04:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:58,606 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2020-10-14 00:04:58,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:04:58,607 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-14 00:04:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:58,609 INFO L225 Difference]: With dead ends: 182 [2020-10-14 00:04:58,610 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 00:04:58,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:04:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 00:04:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 89. [2020-10-14 00:04:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 00:04:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2020-10-14 00:04:58,623 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 68 [2020-10-14 00:04:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:58,623 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2020-10-14 00:04:58,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:04:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2020-10-14 00:04:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 00:04:58,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:58,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 00:04:58,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:04:58,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1998339568, now seen corresponding path program 1 times [2020-10-14 00:04:58,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:58,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419744643] [2020-10-14 00:04:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:05:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 00:05:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:05:03,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:03,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 00:05:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:03,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:03,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:03,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:03,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:03,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:03,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:03,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:03,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:05:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:05:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:03,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:03,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:03,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:03,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:03,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 00:05:03,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419744643] [2020-10-14 00:05:03,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:03,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:05:03,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737649082] [2020-10-14 00:05:03,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:05:03,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:03,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:05:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:03,693 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand 4 states. [2020-10-14 00:05:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:03,806 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-10-14 00:05:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:05:03,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 00:05:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:03,808 INFO L225 Difference]: With dead ends: 112 [2020-10-14 00:05:03,808 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 00:05:03,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 00:05:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-14 00:05:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 00:05:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-14 00:05:03,818 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 68 [2020-10-14 00:05:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:03,818 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-14 00:05:03,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:05:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-14 00:05:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 00:05:03,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:03,819 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:03,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:05:03,820 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:03,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1910278105, now seen corresponding path program 3 times [2020-10-14 00:05:03,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:03,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652644406] [2020-10-14 00:05:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:08,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 00:05:08,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 00:05:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:05:08,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:08,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:08,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:05:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 00:05:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:05:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:09,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:09,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:09,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:09,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:09,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:05:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:09,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:09,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:05:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:09,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:05:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:09,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:09,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 00:05:09,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652644406] [2020-10-14 00:05:09,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:09,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:05:09,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340657282] [2020-10-14 00:05:09,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:05:09,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:09,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:05:09,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:05:09,101 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 11 states. [2020-10-14 00:05:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:10,279 INFO L93 Difference]: Finished difference Result 179 states and 210 transitions. [2020-10-14 00:05:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:05:10,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-14 00:05:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:10,282 INFO L225 Difference]: With dead ends: 179 [2020-10-14 00:05:10,282 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 00:05:10,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:05:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 00:05:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 88. [2020-10-14 00:05:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 00:05:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-10-14 00:05:10,307 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 77 [2020-10-14 00:05:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:10,307 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-10-14 00:05:10,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:05:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-10-14 00:05:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 00:05:10,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:10,313 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:10,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:05:10,313 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -139109737, now seen corresponding path program 1 times [2020-10-14 00:05:10,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:10,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696604681] [2020-10-14 00:05:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:05:15,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:15,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:15,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:15,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:05:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:15,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:15,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:05:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:15,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:05:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:15,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:15,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:05:15,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696604681] [2020-10-14 00:05:15,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:15,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:05:15,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653164480] [2020-10-14 00:05:15,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:05:15,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:15,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:05:15,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:15,406 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 4 states. [2020-10-14 00:05:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:15,534 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-10-14 00:05:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:05:15,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 00:05:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:15,536 INFO L225 Difference]: With dead ends: 116 [2020-10-14 00:05:15,537 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 00:05:15,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 00:05:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-14 00:05:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 00:05:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-14 00:05:15,557 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 77 [2020-10-14 00:05:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:15,557 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-14 00:05:15,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:05:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-14 00:05:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:05:15,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:15,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:15,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:05:15,559 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1165385650, now seen corresponding path program 4 times [2020-10-14 00:05:15,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:15,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115245712] [2020-10-14 00:05:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 00:05:20,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 00:05:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:05:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:05:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:05:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:05:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:20,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:20,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:20,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:20,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:20,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:05:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:20,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:20,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:05:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:05:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:20,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:20,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 00:05:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:20,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:20,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:05:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 00:05:20,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115245712] [2020-10-14 00:05:20,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:20,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:05:20,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815295639] [2020-10-14 00:05:20,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:05:20,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:20,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:05:20,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:05:20,802 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 14 states. [2020-10-14 00:05:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:21,807 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2020-10-14 00:05:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:05:21,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-14 00:05:21,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:21,810 INFO L225 Difference]: With dead ends: 123 [2020-10-14 00:05:21,810 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 00:05:21,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:05:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 00:05:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2020-10-14 00:05:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 00:05:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2020-10-14 00:05:21,830 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 86 [2020-10-14 00:05:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:21,831 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2020-10-14 00:05:21,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:05:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2020-10-14 00:05:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 00:05:21,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:21,833 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:21,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:05:21,833 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:21,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1822964601, now seen corresponding path program 5 times [2020-10-14 00:05:21,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:21,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645859565] [2020-10-14 00:05:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:26,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:05:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 00:05:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:27,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:05:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:05:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:05:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 00:05:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:05:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:27,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 00:05:27,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645859565] [2020-10-14 00:05:27,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:27,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:05:27,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287810342] [2020-10-14 00:05:27,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:05:27,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:27,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:05:27,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:27,066 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand 13 states. [2020-10-14 00:05:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:28,330 INFO L93 Difference]: Finished difference Result 292 states and 335 transitions. [2020-10-14 00:05:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:05:28,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-14 00:05:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:28,333 INFO L225 Difference]: With dead ends: 292 [2020-10-14 00:05:28,333 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 00:05:28,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=758, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:05:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 00:05:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2020-10-14 00:05:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 00:05:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-14 00:05:28,355 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 95 [2020-10-14 00:05:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:28,356 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-14 00:05:28,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:28,356 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-14 00:05:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 00:05:28,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:28,359 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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 00:05:28,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:05:28,359 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:28,360 INFO L82 PathProgramCache]: Analyzing trace with hash 218929438, now seen corresponding path program 6 times [2020-10-14 00:05:28,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:28,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28869063] [2020-10-14 00:05:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:05:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:05:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 00:05:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:05:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 00:05:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:05:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:05:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:05:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 00:05:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:05:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:33,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-14 00:05:33,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28869063] [2020-10-14 00:05:33,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:33,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:05:33,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942521546] [2020-10-14 00:05:33,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:05:33,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:33,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:05:33,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:33,706 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 13 states. [2020-10-14 00:05:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:34,395 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2020-10-14 00:05:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:05:34,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 115 [2020-10-14 00:05:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:34,397 INFO L225 Difference]: With dead ends: 138 [2020-10-14 00:05:34,397 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 00:05:34,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:05:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 00:05:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2020-10-14 00:05:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 00:05:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-10-14 00:05:34,421 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 115 [2020-10-14 00:05:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:34,422 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-10-14 00:05:34,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-10-14 00:05:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 00:05:34,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:34,424 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 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] [2020-10-14 00:05:34,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:05:34,424 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:34,424 INFO L82 PathProgramCache]: Analyzing trace with hash -792187812, now seen corresponding path program 7 times [2020-10-14 00:05:34,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:34,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383728587] [2020-10-14 00:05:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:39,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5406 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 00:05:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:40,001 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 53: A-local: [], B-local: [(main_~i~0_108 Int)]. [2020-10-14 00:05:40,004 ERROR L253 erpolLogProxyWrapper]: Interpolant 54 not inductive [2020-10-14 00:05:40,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:05:40,029 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 00:05:40,035 INFO L168 Benchmark]: Toolchain (without parser) took 90228.04 ms. Allocated memory was 147.8 MB in the beginning and 1.1 GB in the end (delta: 967.8 MB). Free memory was 103.9 MB in the beginning and 82.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 989.2 MB. Max. memory is 7.1 GB. [2020-10-14 00:05:40,036 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 00:05:40,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.16 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 103.9 MB in the beginning and 180.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-14 00:05:40,038 INFO L168 Benchmark]: Boogie Preprocessor took 60.49 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 00:05:40,038 INFO L168 Benchmark]: RCFGBuilder took 582.31 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 152.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-14 00:05:40,039 INFO L168 Benchmark]: TraceAbstraction took 89133.11 ms. Allocated memory was 203.4 MB in the beginning and 1.1 GB in the end (delta: 912.3 MB). Free memory was 151.6 MB in the beginning and 82.6 MB in the end (delta: 69.0 MB). Peak memory consumption was 981.3 MB. Max. memory is 7.1 GB. [2020-10-14 00:05:40,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 447.16 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 103.9 MB in the beginning and 180.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.49 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 582.31 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 152.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 89133.11 ms. Allocated memory was 203.4 MB in the beginning and 1.1 GB in the end (delta: 912.3 MB). Free memory was 151.6 MB in the beginning and 82.6 MB in the end (delta: 69.0 MB). Peak memory consumption was 981.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...