/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:30:41,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:30:41,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:30:41,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:30:41,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:30:41,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:30:41,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:30:41,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:30:41,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:30:41,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:30:41,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:30:41,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:30:41,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:30:41,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:30:41,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:30:41,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:30:41,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:30:41,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:30:41,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:30:41,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:30:41,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:30:41,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:30:41,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:30:41,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:30:41,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:30:41,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:30:41,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:30:41,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:30:41,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:30:41,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:30:41,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:30:41,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:30:41,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:30:41,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:30:41,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:30:41,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:30:41,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:30:41,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:30:41,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:30:41,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:30:41,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:30:41,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:30:42,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:30:42,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:30:42,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:30:42,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:30:42,020 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:30:42,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:30:42,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:30:42,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:30:42,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:30:42,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:30:42,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:30:42,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:30:42,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:30:42,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:30:42,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:30:42,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:30:42,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:30:42,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:30:42,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:30:42,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:30:42,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:30:42,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:42,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:30:42,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:30:42,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:30:42,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:30:42,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:30:42,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:30:42,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:30:42,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:30:42,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:30:42,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:30:42,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:30:42,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:30:42,485 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:30:42,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-09-25 05:30:42,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94452b76f/b0780ff0640c4e6881cd1ab7edceb376/FLAG3c1cb0d92 [2020-09-25 05:30:43,155 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:30:43,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-09-25 05:30:43,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94452b76f/b0780ff0640c4e6881cd1ab7edceb376/FLAG3c1cb0d92 [2020-09-25 05:30:43,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94452b76f/b0780ff0640c4e6881cd1ab7edceb376 [2020-09-25 05:30:43,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:30:43,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:30:43,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:43,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:30:43,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:30:43,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc47136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43, skipping insertion in model container [2020-09-25 05:30:43,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:30:43,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:30:43,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:43,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:30:43,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:43,800 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:30:43,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43 WrapperNode [2020-09-25 05:30:43,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:43,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:30:43,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:30:43,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:30:43,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... [2020-09-25 05:30:43,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:30:43,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:30:43,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:30:43,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:30:43,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:30:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:30:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:30:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:30:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:30:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:30:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:30:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:30:44,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:30:44,421 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:30:44,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:44 BoogieIcfgContainer [2020-09-25 05:30:44,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:30:44,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:30:44,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:30:44,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:30:44,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:30:43" (1/3) ... [2020-09-25 05:30:44,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6d0371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:44, skipping insertion in model container [2020-09-25 05:30:44,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:43" (2/3) ... [2020-09-25 05:30:44,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6d0371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:44, skipping insertion in model container [2020-09-25 05:30:44,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:44" (3/3) ... [2020-09-25 05:30:44,439 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-09-25 05:30:44,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:30:44,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:30:44,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:30:44,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:30:44,515 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:30:44,515 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:30:44,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:30:44,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:30:44,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:30:44,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:30:44,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:30:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-25 05:30:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 05:30:44,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:44,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:44,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:44,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1400694048, now seen corresponding path program 1 times [2020-09-25 05:30:44,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:44,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346430873] [2020-09-25 05:30:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:44,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:30:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 05:30:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:44,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 05:30:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:44,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:30:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:30:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:45,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346430873] [2020-09-25 05:30:45,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:45,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:45,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009818328] [2020-09-25 05:30:45,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:45,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:45,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:45,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:45,085 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 3 states. [2020-09-25 05:30:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:45,173 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2020-09-25 05:30:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:45,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-09-25 05:30:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:45,191 INFO L225 Difference]: With dead ends: 169 [2020-09-25 05:30:45,192 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 05:30:45,196 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 [2020-09-25 05:30:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 05:30:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-09-25 05:30:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 05:30:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2020-09-25 05:30:45,253 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 49 [2020-09-25 05:30:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:45,254 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2020-09-25 05:30:45,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2020-09-25 05:30:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 05:30:45,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:45,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:45,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:30:45,257 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:45,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:45,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1290717684, now seen corresponding path program 1 times [2020-09-25 05:30:45,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:45,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495788750] [2020-09-25 05:30:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:30:45,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 05:30:45,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 05:30:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:30:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:30:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:45,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495788750] [2020-09-25 05:30:45,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:45,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:45,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924586098] [2020-09-25 05:30:45,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:45,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:45,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:45,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:45,433 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand 3 states. [2020-09-25 05:30:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:45,468 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions. [2020-09-25 05:30:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:45,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-25 05:30:45,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:45,472 INFO L225 Difference]: With dead ends: 135 [2020-09-25 05:30:45,472 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 05:30:45,473 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 [2020-09-25 05:30:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 05:30:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 110. [2020-09-25 05:30:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 05:30:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2020-09-25 05:30:45,488 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 50 [2020-09-25 05:30:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:45,489 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2020-09-25 05:30:45,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2020-09-25 05:30:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 05:30:45,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:45,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:45,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:30:45,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:45,492 INFO L82 PathProgramCache]: Analyzing trace with hash 472087846, now seen corresponding path program 1 times [2020-09-25 05:30:45,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:45,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699734557] [2020-09-25 05:30:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 05:30:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:30:45,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 05:30:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:45,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:30:45,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:45,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699734557] [2020-09-25 05:30:45,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:45,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:45,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882225924] [2020-09-25 05:30:45,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:45,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:45,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:45,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:45,637 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 3 states. [2020-09-25 05:30:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:45,687 INFO L93 Difference]: Finished difference Result 266 states and 357 transitions. [2020-09-25 05:30:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:45,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-25 05:30:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:45,690 INFO L225 Difference]: With dead ends: 266 [2020-09-25 05:30:45,690 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 05:30:45,691 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 [2020-09-25 05:30:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 05:30:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2020-09-25 05:30:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 05:30:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2020-09-25 05:30:45,709 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 50 [2020-09-25 05:30:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:45,710 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2020-09-25 05:30:45,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2020-09-25 05:30:45,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:30:45,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:45,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:45,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:30:45,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1750067028, now seen corresponding path program 1 times [2020-09-25 05:30:45,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:45,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939857220] [2020-09-25 05:30:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 05:30:45,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 05:30:45,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 05:30:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:45,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:45,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:45,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939857220] [2020-09-25 05:30:45,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:45,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:45,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123887046] [2020-09-25 05:30:45,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:45,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:45,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:45,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:45,863 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 3 states. [2020-09-25 05:30:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:45,900 INFO L93 Difference]: Finished difference Result 479 states and 646 transitions. [2020-09-25 05:30:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:45,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 05:30:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:45,904 INFO L225 Difference]: With dead ends: 479 [2020-09-25 05:30:45,904 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 05:30:45,906 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 [2020-09-25 05:30:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 05:30:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-09-25 05:30:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 05:30:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 426 transitions. [2020-09-25 05:30:45,933 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 426 transitions. Word has length 51 [2020-09-25 05:30:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:45,933 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 426 transitions. [2020-09-25 05:30:45,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 426 transitions. [2020-09-25 05:30:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:30:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:45,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:45,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:30:45,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash -17356107, now seen corresponding path program 1 times [2020-09-25 05:30:45,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:45,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816984520] [2020-09-25 05:30:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 05:30:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:30:46,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 05:30:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:30:46,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816984520] [2020-09-25 05:30:46,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005634464] [2020-09-25 05:30:46,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,059 INFO L87 Difference]: Start difference. First operand 323 states and 426 transitions. Second operand 3 states. [2020-09-25 05:30:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,090 INFO L93 Difference]: Finished difference Result 399 states and 528 transitions. [2020-09-25 05:30:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 05:30:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,096 INFO L225 Difference]: With dead ends: 399 [2020-09-25 05:30:46,096 INFO L226 Difference]: Without dead ends: 397 [2020-09-25 05:30:46,098 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 [2020-09-25 05:30:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-25 05:30:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 323. [2020-09-25 05:30:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 05:30:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 422 transitions. [2020-09-25 05:30:46,150 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 422 transitions. Word has length 51 [2020-09-25 05:30:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,151 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 422 transitions. [2020-09-25 05:30:46,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 422 transitions. [2020-09-25 05:30:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 05:30:46,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:30:46,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,153 INFO L82 PathProgramCache]: Analyzing trace with hash 802147488, now seen corresponding path program 1 times [2020-09-25 05:30:46,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718227799] [2020-09-25 05:30:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:30:46,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 05:30:46,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:30:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:46,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:30:46,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718227799] [2020-09-25 05:30:46,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076650709] [2020-09-25 05:30:46,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,275 INFO L87 Difference]: Start difference. First operand 323 states and 422 transitions. Second operand 3 states. [2020-09-25 05:30:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,305 INFO L93 Difference]: Finished difference Result 395 states and 516 transitions. [2020-09-25 05:30:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-25 05:30:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,311 INFO L225 Difference]: With dead ends: 395 [2020-09-25 05:30:46,311 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 05:30:46,312 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 [2020-09-25 05:30:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 05:30:46,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-09-25 05:30:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 05:30:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 418 transitions. [2020-09-25 05:30:46,338 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 418 transitions. Word has length 52 [2020-09-25 05:30:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,338 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 418 transitions. [2020-09-25 05:30:46,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 418 transitions. [2020-09-25 05:30:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 05:30:46,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:30:46,345 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1582250918, now seen corresponding path program 1 times [2020-09-25 05:30:46,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384805875] [2020-09-25 05:30:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 05:30:46,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:30:46,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:30:46,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:46,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:46,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384805875] [2020-09-25 05:30:46,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806194073] [2020-09-25 05:30:46,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,440 INFO L87 Difference]: Start difference. First operand 323 states and 418 transitions. Second operand 3 states. [2020-09-25 05:30:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,472 INFO L93 Difference]: Finished difference Result 887 states and 1164 transitions. [2020-09-25 05:30:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-25 05:30:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,477 INFO L225 Difference]: With dead ends: 887 [2020-09-25 05:30:46,477 INFO L226 Difference]: Without dead ends: 593 [2020-09-25 05:30:46,479 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 [2020-09-25 05:30:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-09-25 05:30:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-09-25 05:30:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-25 05:30:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 758 transitions. [2020-09-25 05:30:46,500 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 758 transitions. Word has length 52 [2020-09-25 05:30:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,500 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 758 transitions. [2020-09-25 05:30:46,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 758 transitions. [2020-09-25 05:30:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:30:46,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:30:46,503 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,504 INFO L82 PathProgramCache]: Analyzing trace with hash 436955529, now seen corresponding path program 1 times [2020-09-25 05:30:46,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160345882] [2020-09-25 05:30:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:30:46,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:30:46,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:30:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:46,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160345882] [2020-09-25 05:30:46,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631586479] [2020-09-25 05:30:46,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,592 INFO L87 Difference]: Start difference. First operand 591 states and 758 transitions. Second operand 3 states. [2020-09-25 05:30:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,616 INFO L93 Difference]: Finished difference Result 715 states and 912 transitions. [2020-09-25 05:30:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-25 05:30:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,621 INFO L225 Difference]: With dead ends: 715 [2020-09-25 05:30:46,621 INFO L226 Difference]: Without dead ends: 713 [2020-09-25 05:30:46,622 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 [2020-09-25 05:30:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-09-25 05:30:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 591. [2020-09-25 05:30:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-25 05:30:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 750 transitions. [2020-09-25 05:30:46,643 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 750 transitions. Word has length 53 [2020-09-25 05:30:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,644 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 750 transitions. [2020-09-25 05:30:46,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 750 transitions. [2020-09-25 05:30:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:30:46,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:30:46,647 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1804891768, now seen corresponding path program 1 times [2020-09-25 05:30:46,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561520032] [2020-09-25 05:30:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:30:46,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:46,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561520032] [2020-09-25 05:30:46,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213441048] [2020-09-25 05:30:46,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,754 INFO L87 Difference]: Start difference. First operand 591 states and 750 transitions. Second operand 3 states. [2020-09-25 05:30:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,791 INFO L93 Difference]: Finished difference Result 1667 states and 2128 transitions. [2020-09-25 05:30:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-25 05:30:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,797 INFO L225 Difference]: With dead ends: 1667 [2020-09-25 05:30:46,797 INFO L226 Difference]: Without dead ends: 1105 [2020-09-25 05:30:46,799 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 [2020-09-25 05:30:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-25 05:30:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-25 05:30:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 05:30:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1374 transitions. [2020-09-25 05:30:46,828 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1374 transitions. Word has length 53 [2020-09-25 05:30:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,828 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1374 transitions. [2020-09-25 05:30:46,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1374 transitions. [2020-09-25 05:30:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:30:46,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:30:46,830 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2000907060, now seen corresponding path program 1 times [2020-09-25 05:30:46,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521666407] [2020-09-25 05:30:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:30:46,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:30:46,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:30:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:46,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:46,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:46,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521666407] [2020-09-25 05:30:46,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:46,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:46,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076261029] [2020-09-25 05:30:46,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:46,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:46,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:46,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:46,905 INFO L87 Difference]: Start difference. First operand 1103 states and 1374 transitions. Second operand 3 states. [2020-09-25 05:30:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:46,928 INFO L93 Difference]: Finished difference Result 1315 states and 1616 transitions. [2020-09-25 05:30:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:46,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-25 05:30:46,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:46,935 INFO L225 Difference]: With dead ends: 1315 [2020-09-25 05:30:46,935 INFO L226 Difference]: Without dead ends: 1313 [2020-09-25 05:30:46,936 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 [2020-09-25 05:30:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-25 05:30:46,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1103. [2020-09-25 05:30:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 05:30:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1358 transitions. [2020-09-25 05:30:46,967 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1358 transitions. Word has length 54 [2020-09-25 05:30:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:46,967 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1358 transitions. [2020-09-25 05:30:46,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1358 transitions. [2020-09-25 05:30:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:30:46,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:46,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:46,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:30:46,969 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:46,970 INFO L82 PathProgramCache]: Analyzing trace with hash -116823154, now seen corresponding path program 1 times [2020-09-25 05:30:46,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:46,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928144598] [2020-09-25 05:30:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:30:47,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:30:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:30:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:30:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:47,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:47,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:47,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:47,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928144598] [2020-09-25 05:30:47,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:47,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:47,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672070964] [2020-09-25 05:30:47,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:47,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:47,047 INFO L87 Difference]: Start difference. First operand 1103 states and 1358 transitions. Second operand 3 states. [2020-09-25 05:30:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:47,088 INFO L93 Difference]: Finished difference Result 3153 states and 3887 transitions. [2020-09-25 05:30:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:47,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-25 05:30:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:47,094 INFO L225 Difference]: With dead ends: 3153 [2020-09-25 05:30:47,095 INFO L226 Difference]: Without dead ends: 1103 [2020-09-25 05:30:47,099 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 [2020-09-25 05:30:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-25 05:30:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2020-09-25 05:30:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 05:30:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1294 transitions. [2020-09-25 05:30:47,128 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1294 transitions. Word has length 54 [2020-09-25 05:30:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:47,129 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1294 transitions. [2020-09-25 05:30:47,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1294 transitions. [2020-09-25 05:30:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 05:30:47,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:47,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:47,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:30:47,131 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:47,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:47,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1056202659, now seen corresponding path program 1 times [2020-09-25 05:30:47,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:47,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341480554] [2020-09-25 05:30:47,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 05:30:47,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:47,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 05:30:47,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:30:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 05:30:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:30:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:30:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:47,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:30:47,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341480554] [2020-09-25 05:30:47,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:30:47,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:30:47,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563750760] [2020-09-25 05:30:47,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:30:47,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:30:47,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:30:47,214 INFO L87 Difference]: Start difference. First operand 1103 states and 1294 transitions. Second operand 3 states. [2020-09-25 05:30:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:47,231 INFO L93 Difference]: Finished difference Result 1103 states and 1294 transitions. [2020-09-25 05:30:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:30:47,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-25 05:30:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:47,232 INFO L225 Difference]: With dead ends: 1103 [2020-09-25 05:30:47,233 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:30:47,235 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 [2020-09-25 05:30:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:30:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:30:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:30:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:30:47,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 05:30:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:47,236 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:30:47,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:30:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:30:47,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:30:47,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:30:47,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:30:47,269 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 05:30:47,269 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:30:47,269 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:30:47,269 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:30:47,269 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 05:30:47,270 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-25 05:30:47,271 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 05:30:47,271 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 05:30:47,271 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 05:30:47,271 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-25 05:30:47,271 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 05:30:47,271 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 05:30:47,272 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 05:30:47,272 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-09-25 05:30:47,272 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-09-25 05:30:47,272 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,272 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,272 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 05:30:47,272 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-09-25 05:30:47,273 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,274 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 05:30:47,274 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-09-25 05:30:47,274 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-25 05:30:47,274 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-09-25 05:30:47,274 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 05:30:47,275 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-09-25 05:30:47,276 INFO L268 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-09-25 05:30:47,276 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:30:47,276 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 05:30:47,276 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 05:30:47,276 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-25 05:30:47,276 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:30:47,277 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,278 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 05:30:47,279 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-25 05:30:47,280 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 05:30:47,280 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 05:30:47,280 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 05:30:47,280 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 05:30:47,280 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 05:30:47,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:30:47 BoogieIcfgContainer [2020-09-25 05:30:47,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:30:47,299 INFO L168 Benchmark]: Toolchain (without parser) took 3822.26 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 103.8 MB in the beginning and 103.3 MB in the end (delta: 547.7 kB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:47,300 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 05:30:47,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.68 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:47,302 INFO L168 Benchmark]: Boogie Preprocessor took 122.44 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 182.9 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:47,303 INFO L168 Benchmark]: RCFGBuilder took 503.37 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 162.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:47,304 INFO L168 Benchmark]: TraceAbstraction took 2866.70 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 162.6 MB in the beginning and 103.3 MB in the end (delta: 59.3 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:30:47,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.68 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.44 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 182.9 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.37 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 162.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2866.70 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 162.6 MB in the beginning and 103.3 MB in the end (delta: 59.3 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1351 SDtfs, 477 SDslu, 950 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1103occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 509 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 73 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 39212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...