/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:43:40,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:43:40,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:43:40,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:43:40,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:43:40,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:43:40,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:43:40,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:43:40,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:43:40,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:43:40,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:43:40,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:43:40,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:43:40,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:43:40,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:43:40,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:43:40,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:43:40,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:43:40,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:43:40,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:43:40,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:43:40,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:43:40,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:43:40,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:43:40,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:43:40,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:43:40,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:43:40,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:43:40,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:43:40,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:43:40,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:43:40,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:43:40,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:43:40,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:43:40,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:43:40,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:43:40,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:43:40,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:43:40,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:43:40,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:43:40,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:43:40,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:43:40,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:43:40,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:43:40,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:43:40,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:43:40,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:43:40,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:43:40,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:43:40,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:43:40,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:43:40,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:43:40,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:43:40,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:43:40,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:43:40,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:43:40,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:43:40,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:43:40,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:43:40,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:43:40,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:43:40,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:43:40,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:43:40,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:43:40,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:43:40,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:43:40,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:43:40,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:43:40,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:43:40,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:43:40,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:43:40,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:43:41,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:43:41,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:43:41,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:43:41,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:43:41,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:43:41,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-13 10:43:41,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5d286f7e/9ef67bbd827b4151a6a405ed77a4f5ab/FLAGd5e6c52f6 [2020-10-13 10:43:41,820 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:43:41,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-13 10:43:41,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5d286f7e/9ef67bbd827b4151a6a405ed77a4f5ab/FLAGd5e6c52f6 [2020-10-13 10:43:42,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5d286f7e/9ef67bbd827b4151a6a405ed77a4f5ab [2020-10-13 10:43:42,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:43:42,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:43:42,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:43:42,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:43:42,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:43:42,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83bebeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42, skipping insertion in model container [2020-10-13 10:43:42,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:43:42,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:43:42,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:43:42,481 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:43:42,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:43:42,519 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:43:42,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42 WrapperNode [2020-10-13 10:43:42,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:43:42,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:43:42,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:43:42,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:43:42,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... [2020-10-13 10:43:42,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:43:42,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:43:42,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:43:42,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:43:42,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:43:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:43:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:43:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:43:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:43:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:43:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 10:43:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:43:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:43:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:43:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:43:43,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:43:43,012 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:43:43,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:43:43 BoogieIcfgContainer [2020-10-13 10:43:43,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:43:43,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:43:43,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:43:43,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:43:43,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:43:42" (1/3) ... [2020-10-13 10:43:43,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180a5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:43:43, skipping insertion in model container [2020-10-13 10:43:43,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:43:42" (2/3) ... [2020-10-13 10:43:43,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180a5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:43:43, skipping insertion in model container [2020-10-13 10:43:43,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:43:43" (3/3) ... [2020-10-13 10:43:43,024 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2020-10-13 10:43:43,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:43:43,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:43:43,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:43:43,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:43:43,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:43:43,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:43:43,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:43:43,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:43:43,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:43:43,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:43:43,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:43:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-13 10:43:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:43:43,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:43,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:43:43,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:43,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:43,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1906239810, now seen corresponding path program 1 times [2020-10-13 10:43:43,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:43,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524172133] [2020-10-13 10:43:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:43,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:43,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:43:43,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 10:43:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:43,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:43:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:43:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:43:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:43:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:43,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524172133] [2020-10-13 10:43:43,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:43:43,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 10:43:43,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468526862] [2020-10-13 10:43:43,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 10:43:43,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 10:43:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:43:43,406 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-13 10:43:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:43,429 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-13 10:43:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 10:43:43,431 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-13 10:43:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:43,439 INFO L225 Difference]: With dead ends: 38 [2020-10-13 10:43:43,440 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 10:43:43,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:43:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 10:43:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-13 10:43:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 10:43:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-13 10:43:43,479 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-10-13 10:43:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:43,480 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-13 10:43:43,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 10:43:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-10-13 10:43:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:43:43,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:43,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:43:43,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:43:43,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1847134466, now seen corresponding path program 1 times [2020-10-13 10:43:43,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:43,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759285389] [2020-10-13 10:43:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:43,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:43:43,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 10:43:43,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:43:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:43:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:43:43,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:43:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:43:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:43:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:43,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759285389] [2020-10-13 10:43:43,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:43:43,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:43:43,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944706120] [2020-10-13 10:43:43,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:43:43,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:43,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:43:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:43:43,760 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 3 states. [2020-10-13 10:43:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:43,839 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-13 10:43:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:43:43,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:43:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:43,843 INFO L225 Difference]: With dead ends: 28 [2020-10-13 10:43:43,844 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 10:43:43,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:43:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 10:43:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-13 10:43:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 10:43:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2020-10-13 10:43:43,853 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 10 [2020-10-13 10:43:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:43,854 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2020-10-13 10:43:43,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:43:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-10-13 10:43:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:43:43,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:43,856 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] [2020-10-13 10:43:43,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:43:43,856 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:43,857 INFO L82 PathProgramCache]: Analyzing trace with hash -129940435, now seen corresponding path program 1 times [2020-10-13 10:43:43,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:43,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877684917] [2020-10-13 10:43:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:43:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:43:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-13 10:43:44,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:43:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:43:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:43:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:43:44,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:44,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:44,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:43:44,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:43:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:44,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877684917] [2020-10-13 10:43:44,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:43:44,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:43:44,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166532266] [2020-10-13 10:43:44,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:43:44,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:44,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:43:44,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:43:44,787 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 3 states. [2020-10-13 10:43:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:44,898 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2020-10-13 10:43:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:43:44,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 10:43:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:44,900 INFO L225 Difference]: With dead ends: 50 [2020-10-13 10:43:44,901 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 10:43:44,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:43:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 10:43:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 10:43:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 10:43:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-13 10:43:44,910 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2020-10-13 10:43:44,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:44,910 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-13 10:43:44,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:43:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-13 10:43:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:43:44,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:44,912 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] [2020-10-13 10:43:44,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:43:44,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 263086575, now seen corresponding path program 1 times [2020-10-13 10:43:44,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:44,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103878864] [2020-10-13 10:43:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:45,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:43:45,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:43:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-13 10:43:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:43:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:43:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:43:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:43:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:45,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:45,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:45,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:43:45,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:43:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:45,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103878864] [2020-10-13 10:43:45,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:43:45,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:43:45,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541117366] [2020-10-13 10:43:45,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:43:45,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:43:45,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:43:45,718 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 13 states. [2020-10-13 10:43:45,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:45,914 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-13 10:43:45,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:43:45,915 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-13 10:43:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:45,916 INFO L225 Difference]: With dead ends: 51 [2020-10-13 10:43:45,917 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 10:43:45,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:43:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 10:43:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-13 10:43:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:43:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-10-13 10:43:45,926 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2020-10-13 10:43:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:45,926 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-10-13 10:43:45,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:43:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2020-10-13 10:43:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:43:45,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:45,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:43:45,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:43:45,928 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1016777103, now seen corresponding path program 1 times [2020-10-13 10:43:45,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:45,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522963509] [2020-10-13 10:43:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:43:46,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:43:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 10:43:46,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:43:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:43:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:43:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:46,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:46,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:43:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:46,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522963509] [2020-10-13 10:43:46,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:43:46,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:43:46,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947044094] [2020-10-13 10:43:46,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:43:46,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:43:46,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:43:46,267 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 3 states. [2020-10-13 10:43:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:46,341 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-13 10:43:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:43:46,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 10:43:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:46,343 INFO L225 Difference]: With dead ends: 61 [2020-10-13 10:43:46,344 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 10:43:46,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:43:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 10:43:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-13 10:43:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:43:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-13 10:43:46,352 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 21 [2020-10-13 10:43:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:46,353 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-13 10:43:46,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:43:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-13 10:43:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:43:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:46,354 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] [2020-10-13 10:43:46,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:43:46,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash -345519953, now seen corresponding path program 1 times [2020-10-13 10:43:46,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:46,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87810143] [2020-10-13 10:43:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:46,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:46,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:43:46,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-13 10:43:46,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:43:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:43:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:43:46,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:58,144 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 273 DAG size of output: 23 [2020-10-13 10:43:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:58,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:43:58,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:43:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:58,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87810143] [2020-10-13 10:43:58,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:43:58,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:43:58,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503522811] [2020-10-13 10:43:58,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:43:58,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:43:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=86, Unknown=4, NotChecked=0, Total=110 [2020-10-13 10:43:58,212 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 11 states. [2020-10-13 10:43:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:58,514 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-13 10:43:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:43:58,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-13 10:43:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:58,517 INFO L225 Difference]: With dead ends: 60 [2020-10-13 10:43:58,517 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 10:43:58,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=24, Invalid=104, Unknown=4, NotChecked=0, Total=132 [2020-10-13 10:43:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 10:43:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-13 10:43:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:43:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-13 10:43:58,530 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 21 [2020-10-13 10:43:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:58,531 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-13 10:43:58,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:43:58,531 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-13 10:43:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:43:58,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:58,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:43:58,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:43:58,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:58,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1061692130, now seen corresponding path program 2 times [2020-10-13 10:43:58,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:58,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254634792] [2020-10-13 10:43:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:59,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:43:59,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:43:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-13 10:43:59,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:43:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:43:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:43:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:43:59,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:43:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:43:59,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254634792] [2020-10-13 10:43:59,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:43:59,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:43:59,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413812271] [2020-10-13 10:43:59,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:43:59,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:59,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:43:59,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:43:59,881 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 23 states. [2020-10-13 10:44:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:44:00,491 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2020-10-13 10:44:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:44:00,493 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2020-10-13 10:44:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:44:00,494 INFO L225 Difference]: With dead ends: 71 [2020-10-13 10:44:00,495 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 10:44:00,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:44:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 10:44:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 10:44:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 10:44:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-13 10:44:00,514 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 32 [2020-10-13 10:44:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:44:00,515 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-13 10:44:00,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:44:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-13 10:44:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:44:00,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:44:00,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:44:00,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:44:00,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:44:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:44:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1858628322, now seen corresponding path program 2 times [2020-10-13 10:44:00,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:44:00,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804081111] [2020-10-13 10:44:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:44:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:01,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:44:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:44:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-13 10:44:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:44:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:44:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:44:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:44:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:44:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:01,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:01,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:44:01,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:44:01,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:44:01,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:44:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:44:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:44:01,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:44:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:44:01,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804081111] [2020-10-13 10:44:01,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:44:01,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:44:01,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840461075] [2020-10-13 10:44:01,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:44:01,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:44:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:44:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:44:01,145 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 8 states. [2020-10-13 10:44:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:44:01,312 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-13 10:44:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:44:01,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-13 10:44:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:44:01,314 INFO L225 Difference]: With dead ends: 70 [2020-10-13 10:44:01,314 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:44:01,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:44:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:44:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 10:44:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:44:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-10-13 10:44:01,321 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 32 [2020-10-13 10:44:01,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:44:01,321 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-10-13 10:44:01,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:44:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-10-13 10:44:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:44:01,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:44:01,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:44:01,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:44:01,323 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:44:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:44:01,324 INFO L82 PathProgramCache]: Analyzing trace with hash 263609359, now seen corresponding path program 3 times [2020-10-13 10:44:01,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:44:01,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583696876] [2020-10-13 10:44:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:44:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:02,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:02,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:44:02,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:44:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-13 10:44:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:44:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:44:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:44:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:44:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:44:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:03,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:03,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:44:03,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:44:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:44:03,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:44:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:44:03,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:44:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:44:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:44:03,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583696876] [2020-10-13 10:44:03,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:44:03,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 10:44:03,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601824222] [2020-10-13 10:44:03,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 10:44:03,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:44:03,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 10:44:03,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:44:03,348 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 33 states. [2020-10-13 10:44:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:44:04,209 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-10-13 10:44:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:44:04,211 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 43 [2020-10-13 10:44:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:44:04,212 INFO L225 Difference]: With dead ends: 61 [2020-10-13 10:44:04,212 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 10:44:04,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:44:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 10:44:04,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 10:44:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 10:44:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-13 10:44:04,219 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 43 [2020-10-13 10:44:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:44:04,219 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-13 10:44:04,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 10:44:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-13 10:44:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:44:04,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:44:04,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:44:04,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:44:04,222 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:44:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:44:04,222 INFO L82 PathProgramCache]: Analyzing trace with hash 915707074, now seen corresponding path program 4 times [2020-10-13 10:44:04,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:44:04,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754834033] [2020-10-13 10:44:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:44:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:05,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:05,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:44:05,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:44:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1643 [2020-10-13 10:44:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 10:44:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:44:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:44:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:44:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:44:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:07,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:07,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:44:07,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:44:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:44:07,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:44:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:44:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:44:07,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:44:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:44:07,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754834033] [2020-10-13 10:44:07,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:44:07,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-13 10:44:07,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789641585] [2020-10-13 10:44:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-13 10:44:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:44:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-13 10:44:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 10:44:07,392 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 43 states. [2020-10-13 10:44:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:44:08,878 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-10-13 10:44:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 10:44:08,879 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 54 [2020-10-13 10:44:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:44:08,880 INFO L225 Difference]: With dead ends: 72 [2020-10-13 10:44:08,880 INFO L226 Difference]: Without dead ends: 67 [2020-10-13 10:44:08,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 10:44:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-13 10:44:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-13 10:44:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:44:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2020-10-13 10:44:08,889 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 54 [2020-10-13 10:44:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:44:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2020-10-13 10:44:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-13 10:44:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2020-10-13 10:44:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:44:08,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:44:08,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:44:08,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:44:08,892 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:44:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:44:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash -161874385, now seen corresponding path program 5 times [2020-10-13 10:44:08,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:44:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396661259] [2020-10-13 10:44:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:44:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:10,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:10,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:44:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:44:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-10-13 10:44:10,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-13 10:44:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:44:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 10:44:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:44:36,777 WARN L193 SmtUtils]: Spent 19.51 s on a formula simplification. DAG size of input: 122 DAG size of output: 27 [2020-10-13 10:44:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:44:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:44:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:44:36,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:44:36,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:44:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:44:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:44:36,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:44:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:44:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:44:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:44:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:44:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:44:36,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396661259] [2020-10-13 10:44:36,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:44:36,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-13 10:44:36,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622125470] [2020-10-13 10:44:36,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-13 10:44:36,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:44:36,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-13 10:44:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2861, Unknown=2, NotChecked=0, Total=2970 [2020-10-13 10:44:36,945 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 55 states. [2020-10-13 10:44:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:44:39,714 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2020-10-13 10:44:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 10:44:39,715 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 65 [2020-10-13 10:44:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:44:39,716 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:44:39,716 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 10:44:39,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=111, Invalid=2967, Unknown=2, NotChecked=0, Total=3080 [2020-10-13 10:44:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 10:44:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 10:44:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 10:44:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 10:44:39,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2020-10-13 10:44:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:44:39,720 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 10:44:39,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-13 10:44:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 10:44:39,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 10:44:39,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:44:39,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 10:44:40,034 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-13 10:44:40,037 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 10:44:40,037 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:44:40,038 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:44:40,038 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 10:44:40,038 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 10:44:40,038 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 10:44:40,038 INFO L268 CegarLoopResult]: For program point L31-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,038 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 48) no Hoare annotation was computed. [2020-10-13 10:44:40,038 INFO L268 CegarLoopResult]: For program point L19-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,039 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 45) the Hoare annotation is: (let ((.cse6 (div main_~y~0 2)) (.cse3 (div main_~x~0 2))) (let ((.cse0 (* 2 .cse3)) (.cse4 (* 4294967296 (div (+ main_~y~0 (* .cse6 (- 2))) 4294967296))) (.cse5 (* 2 .cse6))) (or (let ((.cse2 (+ main_~x~0 .cse4 .cse5)) (.cse1 (* 4294967296 (div (+ (* .cse3 (- 2)) main_~x~0) 4294967296)))) (and (<= (+ .cse0 .cse1 main_~y~0) .cse2) (< .cse2 (+ .cse0 .cse1 main_~y~0 1)) (< 49 .cse3))) (and (not (= main_~x~0 .cse0)) (<= (+ main_~x~0 5) 0) (< (+ .cse4 .cse5) main_~y~0))))) [2020-10-13 10:44:40,040 INFO L268 CegarLoopResult]: For program point L40-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,040 INFO L268 CegarLoopResult]: For program point L28-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L268 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L268 CegarLoopResult]: For program point L16-2(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L268 CegarLoopResult]: For program point L37-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L268 CegarLoopResult]: For program point L25-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 48) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L268 CegarLoopResult]: For program point L34-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,041 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 48) the Hoare annotation is: true [2020-10-13 10:44:40,042 INFO L268 CegarLoopResult]: For program point L22-1(lines 15 45) no Hoare annotation was computed. [2020-10-13 10:44:40,042 INFO L264 CegarLoopResult]: At program point L43-1(lines 15 45) the Hoare annotation is: (let ((.cse5 (div main_~y~0 2))) (let ((.cse0 (= main_~y~0 (* .cse5 2))) (.cse2 (* 4294967296 (div (+ main_~y~0 (* .cse5 (- 2))) 4294967296))) (.cse3 (* 2 .cse5))) (or (and (<= 60 main_~x~0) .cse0 (<= main_~x~0 60)) (and .cse0 (<= 80 main_~x~0) (<= main_~x~0 80)) (let ((.cse1 (+ main_~x~0 5))) (and (<= 0 .cse1) (<= .cse1 0) (< (+ .cse2 .cse3) main_~y~0))) (= main_~x~0 0) (and (<= main_~x~0 20) (<= 20 main_~x~0) .cse0) (and (<= 40 main_~x~0) .cse0 (<= main_~x~0 40)) (let ((.cse4 (div main_~x~0 2))) (and .cse0 (< (+ main_~x~0 .cse2 .cse3) (+ (* 2 .cse4) (* 4294967296 (div (+ (* .cse4 (- 2)) main_~x~0) 4294967296)) main_~y~0 1)) (< 49 .cse4)))))) [2020-10-13 10:44:40,042 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-10-13 10:44:40,042 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-10-13 10:44:40,042 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-13 10:44:40,043 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-10-13 10:44:40,043 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-10-13 10:44:40,043 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-10-13 10:44:40,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:44:40 BoogieIcfgContainer [2020-10-13 10:44:40,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:44:40,102 INFO L168 Benchmark]: Toolchain (without parser) took 57891.67 ms. Allocated memory was 145.2 MB in the beginning and 443.0 MB in the end (delta: 297.8 MB). Free memory was 101.5 MB in the beginning and 350.7 MB in the end (delta: -249.3 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:44:40,103 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:44:40,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.98 ms. Allocated memory is still 145.2 MB. Free memory was 101.2 MB in the beginning and 91.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:44:40,105 INFO L168 Benchmark]: Boogie Preprocessor took 145.43 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 179.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:44:40,108 INFO L168 Benchmark]: RCFGBuilder took 349.52 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 163.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:44:40,109 INFO L168 Benchmark]: TraceAbstraction took 57078.78 ms. Allocated memory was 201.9 MB in the beginning and 443.0 MB in the end (delta: 241.2 MB). Free memory was 163.2 MB in the beginning and 350.7 MB in the end (delta: -187.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:44:40,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.98 ms. Allocated memory is still 145.2 MB. Free memory was 101.2 MB in the beginning and 91.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.43 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 179.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.52 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 163.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57078.78 ms. Allocated memory was 201.9 MB in the beginning and 443.0 MB in the end (delta: 241.2 MB). Free memory was 163.2 MB in the beginning and 350.7 MB in the end (delta: -187.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((((((60 <= x && y == y / 2 * 2) && x <= 60) || ((y == y / 2 * 2 && 80 <= x) && x <= 80)) || ((0 <= x + 5 && x + 5 <= 0) && 4294967296 * ((y + y / 2 * -2) / 4294967296) + 2 * (y / 2) < y)) || x == 0) || ((x <= 20 && 20 <= x) && y == y / 2 * 2)) || ((40 <= x && y == y / 2 * 2) && x <= 40)) || ((y == y / 2 * 2 && x + 4294967296 * ((y + y / 2 * -2) / 4294967296) + 2 * (y / 2) < 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296) + y + 1) && 49 < x / 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 56.6s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 40 SDslu, 1184 SDs, 0 SdLazy, 7853 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 26 NumberOfFragments, 261 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 49.2s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 82517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 14/251 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...