/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:10:17,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:17,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:17,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:17,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:17,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:17,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:17,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:17,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:17,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:17,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:17,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:17,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:17,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:17,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:17,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:17,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:17,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:17,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:17,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:17,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:17,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:17,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:17,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:17,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:17,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:17,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:17,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:17,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:17,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:17,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:17,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:17,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:17,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:17,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:17,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:17,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:17,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:17,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:17,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:17,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:17,701 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 01:10:17,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:17,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:17,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:17,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:17,748 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:17,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:17,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:17,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:17,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:17,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:17,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:17,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:17,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:17,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:17,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:17,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:17,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:17,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:17,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:17,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:17,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:17,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:17,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:17,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:17,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:17,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:17,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:17,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:17,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:17,756 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:10:18,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:18,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:18,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:18,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:18,305 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:18,306 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-25 01:10:18,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c156281bc/348aaddd92e54855a4c43435880f4eaa/FLAG87b2399bd [2020-09-25 01:10:18,977 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:10:18,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-25 01:10:18,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c156281bc/348aaddd92e54855a4c43435880f4eaa/FLAG87b2399bd [2020-09-25 01:10:19,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c156281bc/348aaddd92e54855a4c43435880f4eaa [2020-09-25 01:10:19,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:10:19,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:10:19,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:19,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:10:19,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:10:19,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582ac9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19, skipping insertion in model container [2020-09-25 01:10:19,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:10:19,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:10:19,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:19,711 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:10:19,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:19,884 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:10:19,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19 WrapperNode [2020-09-25 01:10:19,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:19,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:10:19,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:10:19,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:10:19,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (1/1) ... [2020-09-25 01:10:19,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:10:19,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:10:19,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:10:19,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:10:19,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (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 01:10:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:10:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:10:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:10:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:10:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:10:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:10:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:10:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:10:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 01:10:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:10:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:10:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:10:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:10:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:10:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:10:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:10:20,482 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:10:20,482 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 01:10:20,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:20 BoogieIcfgContainer [2020-09-25 01:10:20,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:10:20,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:10:20,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:10:20,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:10:20,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:19" (1/3) ... [2020-09-25 01:10:20,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75912727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:20, skipping insertion in model container [2020-09-25 01:10:20,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:19" (2/3) ... [2020-09-25 01:10:20,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75912727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:20, skipping insertion in model container [2020-09-25 01:10:20,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:20" (3/3) ... [2020-09-25 01:10:20,500 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-25 01:10:20,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:10:20,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 01:10:20,560 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 01:10:20,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:10:20,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:10:20,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:10:20,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:10:20,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:10:20,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:10:20,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:10:20,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:10:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 01:10:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 01:10:20,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:20,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:20,632 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash 477414535, now seen corresponding path program 1 times [2020-09-25 01:10:20,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:20,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842088935] [2020-09-25 01:10:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:21,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:21,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:10:21,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-25 01:10:21,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:10:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 01:10:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:10:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:10:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:21,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:21,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:21,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:10:21,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:21,450 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 01:10:21,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842088935] [2020-09-25 01:10:21,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:21,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:21,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32597380] [2020-09-25 01:10:21,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:21,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:21,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:21,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:21,503 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 5 states. [2020-09-25 01:10:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:21,981 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2020-09-25 01:10:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:10:21,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 01:10:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:21,996 INFO L225 Difference]: With dead ends: 223 [2020-09-25 01:10:21,997 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 01:10:22,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 01:10:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-09-25 01:10:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 01:10:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 01:10:22,057 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 30 [2020-09-25 01:10:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:22,058 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 01:10:22,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 01:10:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 01:10:22,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:22,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:22,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:10:22,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash -921386779, now seen corresponding path program 1 times [2020-09-25 01:10:22,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:22,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580745138] [2020-09-25 01:10:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:22,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 01:10:22,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:22,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 01:10:22,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:10:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:22,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:10:22,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:22,334 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 01:10:22,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580745138] [2020-09-25 01:10:22,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:22,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:22,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328106565] [2020-09-25 01:10:22,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:22,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:22,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:22,345 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 6 states. [2020-09-25 01:10:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:22,667 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-09-25 01:10:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:10:22,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-25 01:10:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:22,695 INFO L225 Difference]: With dead ends: 93 [2020-09-25 01:10:22,695 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 01:10:22,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:10:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 01:10:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2020-09-25 01:10:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 01:10:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-25 01:10:22,711 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 31 [2020-09-25 01:10:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:22,712 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-25 01:10:22,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-25 01:10:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 01:10:22,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:22,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:22,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:10:22,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:22,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash -223412704, now seen corresponding path program 1 times [2020-09-25 01:10:22,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:22,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285766746] [2020-09-25 01:10:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 01:10:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 01:10:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:10:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 01:10:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:10:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:22,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:22,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:22,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:22,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:10:22,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:22,954 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 01:10:22,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285766746] [2020-09-25 01:10:22,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:22,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:10:22,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775279716] [2020-09-25 01:10:22,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:10:22,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:10:22,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:10:22,958 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 4 states. [2020-09-25 01:10:23,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:23,123 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-09-25 01:10:23,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:10:23,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-25 01:10:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:23,125 INFO L225 Difference]: With dead ends: 101 [2020-09-25 01:10:23,125 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 01:10:23,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:10:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 01:10:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2020-09-25 01:10:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 01:10:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-09-25 01:10:23,135 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 33 [2020-09-25 01:10:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:23,135 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-09-25 01:10:23,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:10:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-09-25 01:10:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:10:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:23,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:23,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:10:23,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:23,139 INFO L82 PathProgramCache]: Analyzing trace with hash 276122014, now seen corresponding path program 1 times [2020-09-25 01:10:23,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:23,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711037432] [2020-09-25 01:10:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 01:10:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:10:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-09-25 01:10:24,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:10:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:10:24,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:10:24,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:24,242 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 01:10:24,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711037432] [2020-09-25 01:10:24,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:24,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:24,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20516176] [2020-09-25 01:10:24,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:24,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:24,245 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 6 states. [2020-09-25 01:10:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:24,532 INFO L93 Difference]: Finished difference Result 171 states and 179 transitions. [2020-09-25 01:10:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:10:24,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 01:10:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:24,537 INFO L225 Difference]: With dead ends: 171 [2020-09-25 01:10:24,537 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 01:10:24,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 01:10:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 93. [2020-09-25 01:10:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 01:10:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-09-25 01:10:24,574 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 52 [2020-09-25 01:10:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:24,575 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-09-25 01:10:24,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:24,578 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-09-25 01:10:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 01:10:24,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:24,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:24,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:10:24,582 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:24,583 INFO L82 PathProgramCache]: Analyzing trace with hash -94524522, now seen corresponding path program 1 times [2020-09-25 01:10:24,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:24,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502557163] [2020-09-25 01:10:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 01:10:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 01:10:24,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 01:10:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:10:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:24,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:24,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:24,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:24,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:10:24,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 01:10:24,896 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 01:10:24,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502557163] [2020-09-25 01:10:24,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:24,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:24,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791821390] [2020-09-25 01:10:24,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:24,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:24,899 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 6 states. [2020-09-25 01:10:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:25,211 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2020-09-25 01:10:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:10:25,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 01:10:25,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:25,214 INFO L225 Difference]: With dead ends: 135 [2020-09-25 01:10:25,214 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 01:10:25,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:10:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 01:10:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 93. [2020-09-25 01:10:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 01:10:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-09-25 01:10:25,225 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 53 [2020-09-25 01:10:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:25,226 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-09-25 01:10:25,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-09-25 01:10:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 01:10:25,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:25,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:25,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:10:25,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash 893991191, now seen corresponding path program 1 times [2020-09-25 01:10:25,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:25,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771194876] [2020-09-25 01:10:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:25,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:25,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 01:10:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 01:10:25,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:10:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:10:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:25,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:25,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:25,705 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 01:10:25,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771194876] [2020-09-25 01:10:25,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:25,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:25,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635582766] [2020-09-25 01:10:25,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:25,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:25,710 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 6 states. [2020-09-25 01:10:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:25,967 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2020-09-25 01:10:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:10:25,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 01:10:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:25,970 INFO L225 Difference]: With dead ends: 188 [2020-09-25 01:10:25,970 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 01:10:25,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:10:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 01:10:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 70. [2020-09-25 01:10:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 01:10:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 01:10:25,986 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 53 [2020-09-25 01:10:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:25,986 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 01:10:25,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 01:10:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 01:10:25,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:25,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:25,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:10:25,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2013372873, now seen corresponding path program 1 times [2020-09-25 01:10:25,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:25,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192387664] [2020-09-25 01:10:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:26,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:27,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:27,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 01:10:27,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-09-25 01:10:27,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 01:10:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:10:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 01:10:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:28,106 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 49 [2020-09-25 01:10:28,354 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2020-09-25 01:10:28,832 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 69 [2020-09-25 01:10:29,070 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 60 [2020-09-25 01:10:29,325 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2020-09-25 01:10:29,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:29,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:10:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:10:29,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:29,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192387664] [2020-09-25 01:10:29,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:29,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 01:10:29,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276542160] [2020-09-25 01:10:29,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 01:10:29,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:29,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 01:10:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:10:29,628 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 14 states. [2020-09-25 01:10:30,041 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-25 01:10:30,579 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 01:10:32,833 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 01:10:37,170 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 01:10:37,325 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-09-25 01:10:37,541 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-25 01:10:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:37,725 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-09-25 01:10:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 01:10:37,726 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 01:10:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:37,727 INFO L225 Difference]: With dead ends: 94 [2020-09-25 01:10:37,727 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 01:10:37,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-09-25 01:10:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 01:10:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2020-09-25 01:10:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 01:10:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 01:10:37,746 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 55 [2020-09-25 01:10:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:37,746 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 01:10:37,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 01:10:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 01:10:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 01:10:37,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:37,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:37,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:10:37,749 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:37,750 INFO L82 PathProgramCache]: Analyzing trace with hash 511170824, now seen corresponding path program 1 times [2020-09-25 01:10:37,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:37,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99971797] [2020-09-25 01:10:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:42,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:42,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 01:10:42,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:42,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 01:10:42,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 01:10:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 01:10:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 01:10:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:53,240 WARN L193 SmtUtils]: Spent 8.92 s on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2020-09-25 01:10:53,724 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 67 [2020-09-25 01:10:56,460 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 142 DAG size of output: 74 [2020-09-25 01:11:03,159 WARN L193 SmtUtils]: Spent 6.41 s on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-09-25 01:11:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:11:03,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:03,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:11:03,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:03,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:03,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:03,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99971797] [2020-09-25 01:11:03,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:03,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:11:03,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058818469] [2020-09-25 01:11:03,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:11:03,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:03,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:11:03,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:11:03,523 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 12 states. [2020-09-25 01:11:12,573 WARN L193 SmtUtils]: Spent 8.60 s on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 01:11:17,080 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification that was a NOOP. DAG size: 110 [2020-09-25 01:11:18,542 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 01:11:18,792 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-25 01:11:21,272 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 106