/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:25:31,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:25:31,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:25:31,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:25:31,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:25:31,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:25:31,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:25:31,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:25:31,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:25:31,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:25:31,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:25:31,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:25:31,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:25:31,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:25:31,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:25:31,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:25:31,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:25:31,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:25:31,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:25:31,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:25:31,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:25:31,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:25:31,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:25:31,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:25:31,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:25:31,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:25:31,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:25:31,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:25:31,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:25:31,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:25:31,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:25:31,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:25:31,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:25:31,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:25:31,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:25:31,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:25:31,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:25:31,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:25:31,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:25:31,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:25:31,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:25:31,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:25:31,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:25:31,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:25:31,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:25:31,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:25:31,344 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:25:31,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:25:31,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:25:31,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:25:31,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:25:31,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:25:31,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:25:31,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:25:31,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:25:31,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:25:31,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:25:31,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:25:31,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:25:31,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:25:31,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:25:31,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:25:31,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:25:31,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:25:31,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:25:31,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:25:31,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:25:31,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:25:31,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:25:31,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:25:31,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:25:31,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:25:31,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:25:31,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:25:31,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:25:31,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:25:31,851 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:25:31,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 05:25:31,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690cec7fe/1a05e093b30b45c48b26774db038e199/FLAG4357c2d4d [2020-09-25 05:25:32,498 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:25:32,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 05:25:32,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690cec7fe/1a05e093b30b45c48b26774db038e199/FLAG4357c2d4d [2020-09-25 05:25:32,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690cec7fe/1a05e093b30b45c48b26774db038e199 [2020-09-25 05:25:32,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:25:32,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:25:32,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:32,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:25:32,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:25:32,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:32" (1/1) ... [2020-09-25 05:25:32,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:32, skipping insertion in model container [2020-09-25 05:25:32,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:32" (1/1) ... [2020-09-25 05:25:32,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:25:32,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:25:33,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:33,189 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:25:33,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:33,222 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:25:33,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33 WrapperNode [2020-09-25 05:25:33,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:33,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:25:33,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:25:33,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:25:33,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... [2020-09-25 05:25:33,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:25:33,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:25:33,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:25:33,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:25:33,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:25:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:25:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:25:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 05:25:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:25:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 05:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:25:33,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:25:33,689 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:25:33,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:33 BoogieIcfgContainer [2020-09-25 05:25:33,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:25:33,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:25:33,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:25:33,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:25:33,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:25:32" (1/3) ... [2020-09-25 05:25:33,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c83725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:33, skipping insertion in model container [2020-09-25 05:25:33,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:33" (2/3) ... [2020-09-25 05:25:33,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c83725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:33, skipping insertion in model container [2020-09-25 05:25:33,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:33" (3/3) ... [2020-09-25 05:25:33,708 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-25 05:25:33,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:25:33,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:25:33,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:25:33,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:25:33,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:25:33,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:25:33,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:25:33,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:25:33,826 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:25:33,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:25:33,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:25:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 05:25:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 05:25:33,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:33,863 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] [2020-09-25 05:25:33,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:33,870 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 05:25:33,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:33,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347769975] [2020-09-25 05:25:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:34,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:25:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 05:25:34,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:34,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:25:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:25:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:34,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:34,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:34,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:34,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:34,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:34,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:34,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:34,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 05:25:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:34,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:25:34,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347769975] [2020-09-25 05:25:34,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:34,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:25:34,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370853487] [2020-09-25 05:25:34,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:25:34,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:25:34,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:34,549 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 05:25:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:34,821 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-25 05:25:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:25:34,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 05:25:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:34,851 INFO L225 Difference]: With dead ends: 59 [2020-09-25 05:25:34,852 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 05:25:34,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 05:25:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 05:25:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 05:25:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-25 05:25:34,948 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-25 05:25:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:34,950 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-25 05:25:34,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:25:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-25 05:25:34,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:25:34,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:34,956 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] [2020-09-25 05:25:34,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:25:34,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:34,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 05:25:34,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:34,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203851017] [2020-09-25 05:25:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:25:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 05:25:35,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:25:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 05:25:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:25:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:35,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:35,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:25:35,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:25:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:35,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:25:35,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 05:25:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:25:35,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203851017] [2020-09-25 05:25:35,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:35,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:25:35,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410754480] [2020-09-25 05:25:35,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:25:35,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:35,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:25:35,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:35,500 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-25 05:25:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:35,733 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 05:25:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:25:35,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 05:25:35,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:35,736 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:25:35,737 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:25:35,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:25:35,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:25:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 05:25:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:25:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-25 05:25:35,749 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-25 05:25:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:35,750 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-25 05:25:35,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:25:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-25 05:25:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 05:25:35,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:35,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-25 05:25:35,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:25:35,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:35,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-25 05:25:35,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:35,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086865894] [2020-09-25 05:25:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:36,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:36,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:25:36,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-09-25 05:25:36,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:36,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:25:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:25:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:36,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:36,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:36,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:36,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:36,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 05:25:36,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 05:25:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:36,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:25:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:25:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:36,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:25:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:36,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:25:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:36,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:36,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:36,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:25:36,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:36,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 05:25:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 05:25:36,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086865894] [2020-09-25 05:25:36,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:36,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:25:36,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097843212] [2020-09-25 05:25:36,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:25:36,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:36,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:25:36,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:36,868 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2020-09-25 05:25:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:36,946 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2020-09-25 05:25:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:36,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 05:25:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:36,949 INFO L225 Difference]: With dead ends: 73 [2020-09-25 05:25:36,949 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:25:36,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:25:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:25:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 05:25:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 05:25:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-25 05:25:36,961 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 43 [2020-09-25 05:25:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:36,961 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-25 05:25:36,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:25:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-25 05:25:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:25:36,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:36,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-09-25 05:25:36,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:25:36,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 05:25:36,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:36,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640615370] [2020-09-25 05:25:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:25:37,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-25 05:25:37,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:25:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 05:25:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:25:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:37,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:25:37,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 05:25:37,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:25:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:25:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:37,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 05:25:37,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:25:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:37,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:25:37,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:25:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:37,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:25:37,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:25:37,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640615370] [2020-09-25 05:25:37,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:37,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:25:37,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317290289] [2020-09-25 05:25:37,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:25:37,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:25:37,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:25:37,845 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-09-25 05:25:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:38,304 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-09-25 05:25:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:25:38,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 05:25:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:38,308 INFO L225 Difference]: With dead ends: 69 [2020-09-25 05:25:38,308 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 05:25:38,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:25:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 05:25:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-09-25 05:25:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 05:25:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-09-25 05:25:38,322 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 53 [2020-09-25 05:25:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:38,322 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-09-25 05:25:38,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:25:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2020-09-25 05:25:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:25:38,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:38,326 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:38,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:25:38,326 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 358541405, now seen corresponding path program 2 times [2020-09-25 05:25:38,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:38,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547717312] [2020-09-25 05:25:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:25:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:25:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:25:43,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:25:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 05:25:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:25:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:43,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:43,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:25:45,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2077 [2020-09-25 05:25:45,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:25:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:25:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:25:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:45,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:25:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:25:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:45,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:25:45,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:45,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:25:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:45,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:25:45,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:25:45,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:45,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:25:45,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 05:25:45,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547717312] [2020-09-25 05:25:45,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:45,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:25:45,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852253064] [2020-09-25 05:25:45,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:25:45,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:45,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:25:45,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:25:45,778 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 10 states. [2020-09-25 05:25:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:45,990 INFO L93 Difference]: Finished difference Result 125 states and 192 transitions. [2020-09-25 05:25:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:25:45,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 05:25:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:45,997 INFO L225 Difference]: With dead ends: 125 [2020-09-25 05:25:45,999 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 05:25:46,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:25:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 05:25:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 05:25:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 05:25:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2020-09-25 05:25:46,041 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 63 [2020-09-25 05:25:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:46,044 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2020-09-25 05:25:46,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:25:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2020-09-25 05:25:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:25:46,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:46,054 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:25:46,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:25:46,055 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:46,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 3 times [2020-09-25 05:25:46,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:46,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961509812] [2020-09-25 05:25:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:46,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:46,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:25:46,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 05:25:46,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:46,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:25:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:25:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:25:46,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:46,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:46,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:46,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:46,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:46,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:46,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:25:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 05:25:46,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:46,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:25:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 05:25:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:25:47,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 05:25:47,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:25:47,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:25:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:47,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:47,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:25:47,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:25:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:47,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:25:47,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:47,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:25:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:47,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:25:47,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:25:47,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961509812] [2020-09-25 05:25:47,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:47,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:25:47,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780364782] [2020-09-25 05:25:47,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:25:47,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:47,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:25:47,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:25:47,320 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand 12 states. [2020-09-25 05:25:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:47,747 INFO L93 Difference]: Finished difference Result 115 states and 162 transitions. [2020-09-25 05:25:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:25:47,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 05:25:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:47,750 INFO L225 Difference]: With dead ends: 115 [2020-09-25 05:25:47,751 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 05:25:47,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-09-25 05:25:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 05:25:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 79. [2020-09-25 05:25:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 05:25:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2020-09-25 05:25:47,777 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 63 [2020-09-25 05:25:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:47,778 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2020-09-25 05:25:47,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:25:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2020-09-25 05:25:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 05:25:47,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:47,782 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 05:25:47,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:25:47,782 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:47,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1532001025, now seen corresponding path program 4 times [2020-09-25 05:25:47,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:47,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315876444] [2020-09-25 05:25:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:25:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:25:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:25:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:52,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 05:25:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:25:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:52,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:25:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:25:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:25:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 05:25:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:25:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:25:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:25:57,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:25:57,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:57,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:57,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 05:25:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:25:58,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:25:58,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:25:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:25:58,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:25:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:25:58,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:25:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 05:25:58,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315876444] [2020-09-25 05:25:58,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:58,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:25:58,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794447092] [2020-09-25 05:25:58,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:58,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:58,114 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand 4 states. [2020-09-25 05:25:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:58,182 INFO L93 Difference]: Finished difference Result 144 states and 218 transitions. [2020-09-25 05:25:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:25:58,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-09-25 05:25:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:58,185 INFO L225 Difference]: With dead ends: 144 [2020-09-25 05:25:58,186 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 05:25:58,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 05:25:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 05:25:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 05:25:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2020-09-25 05:25:58,218 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 83 [2020-09-25 05:25:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:58,218 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2020-09-25 05:25:58,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2020-09-25 05:25:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 05:25:58,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:58,224 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:25:58,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:25:58,225 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 5 times [2020-09-25 05:25:58,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:58,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308620033] [2020-09-25 05:25:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4187 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:26:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:02,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3207 [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:26:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:26:05,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:26:05,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:26:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:26:05,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:26:05,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:26:05,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:05,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:26:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:26:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:05,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:26:05,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:26:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:26:05,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:26:05,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:26:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:05,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:26:05,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:26:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-09-25 05:26:05,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308620033] [2020-09-25 05:26:05,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:05,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:26:05,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664560353] [2020-09-25 05:26:05,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:26:05,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:05,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:26:05,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:26:05,930 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand 9 states. [2020-09-25 05:26:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:06,118 INFO L93 Difference]: Finished difference Result 95 states and 127 transitions. [2020-09-25 05:26:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:26:06,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-25 05:26:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:06,121 INFO L225 Difference]: With dead ends: 95 [2020-09-25 05:26:06,121 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 05:26:06,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:26:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 05:26:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-09-25 05:26:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 05:26:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-09-25 05:26:06,133 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 92 [2020-09-25 05:26:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:06,134 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-09-25 05:26:06,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:26:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-09-25 05:26:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 05:26:06,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:06,136 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:26:06,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:26:06,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1838029976, now seen corresponding path program 6 times [2020-09-25 05:26:06,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:06,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328235620] [2020-09-25 05:26:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 05:26:11,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:26:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:26:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:26:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 05:26:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:26:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:11,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:11,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:11,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:26:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 05:26:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:26:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:26:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:26:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:26:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:26:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 05:26:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:26:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:26:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 05:26:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:21,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:26:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 05:26:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:26:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:21,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:26:21,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:26:21,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:21,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:26:21,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:26:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:21,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:26:21,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:21,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 05:26:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:21,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:26:21,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:26:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:26:21,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:26:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:21,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 05:26:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:21,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:26:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 05:26:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:21,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:26:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:21,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:26:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:26:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 136 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-25 05:26:21,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328235620] [2020-09-25 05:26:21,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:21,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:26:21,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578304297] [2020-09-25 05:26:21,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:26:21,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:21,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:26:21,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:26:21,606 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 8 states. [2020-09-25 05:26:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:21,759 INFO L93 Difference]: Finished difference Result 146 states and 251 transitions. [2020-09-25 05:26:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:26:21,760 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-09-25 05:26:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:21,760 INFO L225 Difference]: With dead ends: 146 [2020-09-25 05:26:21,761 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:26:21,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:26:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:26:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:26:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:26:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:26:21,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2020-09-25 05:26:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:21,764 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:26:21,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:26:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:26:21,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:26:21,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:26:21,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:26:22,231 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 05:26:22,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:26:22,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:26:22,232 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:26:22,232 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:26:22,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:26:22,233 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-25 05:26:22,233 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|) (or (< 0 ackermann_~m) (<= (+ ackermann_~m 1) 0))) [2020-09-25 05:26:22,233 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-25 05:26:22,233 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 05:26:22,234 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|) (or (< 0 ackermann_~m) (<= (+ ackermann_~m 1) 0))) [2020-09-25 05:26:22,234 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse0 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= 2 ackermann_~m) .cse0 (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|)) (and (<= 2 |ackermann_#t~ret1|) (<= 1 |ackermann_#in~m|) (= ackermann_~m |ackermann_#in~m|) .cse0))) [2020-09-25 05:26:22,234 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 05:26:22,234 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 05:26:22,234 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 05:26:22,234 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 05:26:22,235 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 05:26:22,235 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 05:26:22,235 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 05:26:22,235 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 05:26:22,235 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 05:26:22,235 INFO L268 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point L15(lines 15 23) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 05:26:22,236 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 05:26:22,237 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 05:26:22,237 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-25 05:26:22,237 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-25 05:26:22,237 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 05:26:22,237 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 05:26:22,237 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-25 05:26:22,237 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 05:26:22,238 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 05:26:22,238 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 05:26:22,238 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 05:26:22,238 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-25 05:26:22,238 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-25 05:26:22,238 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-25 05:26:22,238 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 05:26:22,239 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-25 05:26:22,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:26:22 BoogieIcfgContainer [2020-09-25 05:26:22,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:26:22,251 INFO L168 Benchmark]: Toolchain (without parser) took 49351.21 ms. Allocated memory was 138.4 MB in the beginning and 442.5 MB in the end (delta: 304.1 MB). Free memory was 101.2 MB in the beginning and 299.3 MB in the end (delta: -198.1 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:22,252 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:26:22,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.20 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 91.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:22,254 INFO L168 Benchmark]: Boogie Preprocessor took 121.41 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:22,254 INFO L168 Benchmark]: RCFGBuilder took 351.68 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 165.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:22,255 INFO L168 Benchmark]: TraceAbstraction took 48548.24 ms. Allocated memory was 201.3 MB in the beginning and 442.5 MB in the end (delta: 241.2 MB). Free memory was 164.9 MB in the beginning and 299.3 MB in the end (delta: -134.5 MB). Peak memory consumption was 106.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:22,259 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.20 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 91.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.41 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.68 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 165.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48548.24 ms. Allocated memory was 201.3 MB in the beginning and 442.5 MB in the end (delta: 241.2 MB). Free memory was 164.9 MB in the beginning and 299.3 MB in the end (delta: -134.5 MB). Peak memory consumption was 106.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 47.9s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 319 SDtfs, 325 SDslu, 1230 SDs, 0 SdLazy, 947 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 113 PreInvPairs, 136 NumberOfFragments, 74 HoareAnnotationTreeSize, 113 FomulaSimplifications, 528 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 288 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 45.0s InterpolantComputationTime, 566 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 78253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 686/760 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...