/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:27:09,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:27:09,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:27:09,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:27:09,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:27:09,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:27:09,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:27:09,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:27:09,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:27:09,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:27:09,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:27:09,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:27:09,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:27:09,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:27:09,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:27:09,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:27:09,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:27:09,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:27:09,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:27:09,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:27:09,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:27:09,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:27:09,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:27:09,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:27:09,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:27:09,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:27:09,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:27:09,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:27:09,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:27:09,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:27:09,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:27:09,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:27:09,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:27:09,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:27:09,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:27:09,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:27:09,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:27:09,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:27:09,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:27:09,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:27:09,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:27:09,385 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 03:27:09,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:27:09,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:27:09,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:27:09,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:27:09,440 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:27:09,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:27:09,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:27:09,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:27:09,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:27:09,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:27:09,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:27:09,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:27:09,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:27:09,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:27:09,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:27:09,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:27:09,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:27:09,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:27:09,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:27:09,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:27:09,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:27:09,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:27:09,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:27:09,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:27:09,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:27:09,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:27:09,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:27:09,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:27:09,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:27:09,448 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:27:09,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:27:09,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:27:09,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:27:09,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:27:09,975 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:27:09,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-25 03:27:10,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0646b3ce/712b59598ab54e8685ad79add06ab45c/FLAG6585eb7e0 [2020-09-25 03:27:10,629 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:27:10,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-25 03:27:10,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0646b3ce/712b59598ab54e8685ad79add06ab45c/FLAG6585eb7e0 [2020-09-25 03:27:10,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0646b3ce/712b59598ab54e8685ad79add06ab45c [2020-09-25 03:27:10,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:27:10,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:27:10,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:10,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:27:10,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:27:10,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:10" (1/1) ... [2020-09-25 03:27:10,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:10, skipping insertion in model container [2020-09-25 03:27:10,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:10" (1/1) ... [2020-09-25 03:27:11,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:27:11,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:27:11,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:11,311 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:27:11,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:11,463 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:27:11,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11 WrapperNode [2020-09-25 03:27:11,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:11,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:27:11,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:27:11,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:27:11,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (1/1) ... [2020-09-25 03:27:11,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:27:11,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:27:11,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:27:11,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:27:11,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (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 03:27:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:27:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:27:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:27:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:27:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:27:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:27:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:27:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:27:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 03:27:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:27:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:27:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:27:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:27:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:27:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:27:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:27:12,066 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:27:12,067 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:27:12,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:12 BoogieIcfgContainer [2020-09-25 03:27:12,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:27:12,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:27:12,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:27:12,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:27:12,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:27:10" (1/3) ... [2020-09-25 03:27:12,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b54ce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:12, skipping insertion in model container [2020-09-25 03:27:12,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:11" (2/3) ... [2020-09-25 03:27:12,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b54ce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:12, skipping insertion in model container [2020-09-25 03:27:12,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:12" (3/3) ... [2020-09-25 03:27:12,084 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2020-09-25 03:27:12,099 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:27:12,110 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 03:27:12,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 03:27:12,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:27:12,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:27:12,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:27:12,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:27:12,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:27:12,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:27:12,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:27:12,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:27:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 03:27:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 03:27:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:12,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:12,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash 477414535, now seen corresponding path program 1 times [2020-09-25 03:27:12,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:12,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773867041] [2020-09-25 03:27:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:12,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 03:27:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-25 03:27:12,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:27:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:27:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:27:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:12,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:12,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:27:12,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:12,984 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 03:27:12,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773867041] [2020-09-25 03:27:12,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:12,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:27:12,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197409818] [2020-09-25 03:27:12,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:27:12,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:13,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:27:13,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:27:13,019 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-09-25 03:27:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:13,394 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-09-25 03:27:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:27:13,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-25 03:27:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:13,417 INFO L225 Difference]: With dead ends: 210 [2020-09-25 03:27:13,417 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 03:27:13,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:27:13,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 03:27:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2020-09-25 03:27:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:27:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-09-25 03:27:13,477 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 30 [2020-09-25 03:27:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:13,478 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-09-25 03:27:13,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:27:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-09-25 03:27:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 03:27:13,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:13,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:13,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:27:13,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:13,482 INFO L82 PathProgramCache]: Analyzing trace with hash 572189094, now seen corresponding path program 1 times [2020-09-25 03:27:13,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:13,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13631322] [2020-09-25 03:27:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:13,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 03:27:13,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 03:27:13,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 03:27:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:27:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:13,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:27:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:13,654 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 03:27:13,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13631322] [2020-09-25 03:27:13,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:13,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:27:13,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436327654] [2020-09-25 03:27:13,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:27:13,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:13,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:27:13,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:27:13,670 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 4 states. [2020-09-25 03:27:13,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:13,931 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2020-09-25 03:27:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:27:13,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-25 03:27:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:13,933 INFO L225 Difference]: With dead ends: 159 [2020-09-25 03:27:13,934 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 03:27:13,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:27:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 03:27:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2020-09-25 03:27:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:27:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 03:27:13,958 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 31 [2020-09-25 03:27:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:13,959 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 03:27:13,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:27:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 03:27:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 03:27:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:13,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:13,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:27:13,964 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash -921386779, now seen corresponding path program 1 times [2020-09-25 03:27:13,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:13,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982305539] [2020-09-25 03:27:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:14,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 03:27:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 03:27:14,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:27:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 03:27:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:14,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:14,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:14,233 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 03:27:14,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982305539] [2020-09-25 03:27:14,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:14,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:27:14,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407788211] [2020-09-25 03:27:14,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:27:14,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:14,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:27:14,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:27:14,238 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 6 states. [2020-09-25 03:27:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:14,449 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-09-25 03:27:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:27:14,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-25 03:27:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:14,451 INFO L225 Difference]: With dead ends: 93 [2020-09-25 03:27:14,451 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 03:27:14,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:27:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 03:27:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2020-09-25 03:27:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 03:27:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-25 03:27:14,461 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 31 [2020-09-25 03:27:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:14,462 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-25 03:27:14,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:27:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-25 03:27:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:27:14,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:14,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:14,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:27:14,465 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:14,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:14,465 INFO L82 PathProgramCache]: Analyzing trace with hash -223412704, now seen corresponding path program 1 times [2020-09-25 03:27:14,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:14,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11512492] [2020-09-25 03:27:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:14,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:14,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:27:14,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:14,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 03:27:14,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:27:14,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:27:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:14,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:14,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:14,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:14,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:27:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:14,693 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 03:27:14,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11512492] [2020-09-25 03:27:14,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:14,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:27:14,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107151849] [2020-09-25 03:27:14,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:27:14,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:14,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:27:14,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:27:14,697 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 4 states. [2020-09-25 03:27:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:14,874 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-09-25 03:27:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:27:14,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-25 03:27:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:14,876 INFO L225 Difference]: With dead ends: 101 [2020-09-25 03:27:14,876 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 03:27:14,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:27:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 03:27:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2020-09-25 03:27:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 03:27:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-09-25 03:27:14,885 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 33 [2020-09-25 03:27:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:14,886 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-09-25 03:27:14,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:27:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-09-25 03:27:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:27:14,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:14,888 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 03:27:14,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:27:14,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:14,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:14,889 INFO L82 PathProgramCache]: Analyzing trace with hash 276122014, now seen corresponding path program 1 times [2020-09-25 03:27:14,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:14,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938880399] [2020-09-25 03:27:14,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:27:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:27:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-25 03:27:15,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:27:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 03:27:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:27:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:15,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:15,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:15,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:15,902 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 03:27:15,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938880399] [2020-09-25 03:27:15,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:15,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:27:15,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479444229] [2020-09-25 03:27:15,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:27:15,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:15,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:27:15,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:15,905 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 7 states. [2020-09-25 03:27:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:18,337 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-09-25 03:27:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:27:18,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 03:27:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:18,339 INFO L225 Difference]: With dead ends: 154 [2020-09-25 03:27:18,340 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 03:27:18,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:27:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 03:27:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2020-09-25 03:27:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 03:27:18,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-09-25 03:27:18,348 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 52 [2020-09-25 03:27:18,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:18,349 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-09-25 03:27:18,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:27:18,349 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-09-25 03:27:18,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:27:18,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:18,351 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 03:27:18,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:27:18,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash -94524522, now seen corresponding path program 1 times [2020-09-25 03:27:18,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:18,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063466048] [2020-09-25 03:27:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:18,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 03:27:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:18,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:18,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:18,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:18,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:18,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:18,580 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 03:27:18,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063466048] [2020-09-25 03:27:18,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:18,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:27:18,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093111008] [2020-09-25 03:27:18,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:27:18,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:18,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:27:18,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:27:18,584 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 6 states. [2020-09-25 03:27:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:18,834 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-09-25 03:27:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:27:18,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 03:27:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:18,836 INFO L225 Difference]: With dead ends: 108 [2020-09-25 03:27:18,836 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 03:27:18,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 03:27:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2020-09-25 03:27:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:27:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 03:27:18,844 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 53 [2020-09-25 03:27:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:18,845 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 03:27:18,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:27:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 03:27:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:27:18,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:18,846 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 03:27:18,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:27:18,847 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:18,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2013372873, now seen corresponding path program 1 times [2020-09-25 03:27:18,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:18,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472133243] [2020-09-25 03:27:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:20,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:20,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:20,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:27:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-09-25 03:27:20,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:27:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 03:27:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:27:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:21,405 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 49 [2020-09-25 03:27:21,721 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2020-09-25 03:27:22,313 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 69 [2020-09-25 03:27:22,587 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 60 [2020-09-25 03:27:22,900 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2020-09-25 03:27:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:23,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:27:23,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:23,231 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 03:27:23,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472133243] [2020-09-25 03:27:23,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:23,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 03:27:23,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495525856] [2020-09-25 03:27:23,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:27:23,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:23,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:27:23,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:27:23,234 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 14 states. [2020-09-25 03:27:23,587 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-25 03:27:27,224 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 03:27:27,470 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 03:27:29,774 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 03:27:29,988 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-25 03:27:30,311 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-25 03:27:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:30,504 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-09-25 03:27:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:27:30,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 03:27:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:30,506 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:27:30,507 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 03:27:30,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:27:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 03:27:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2020-09-25 03:27:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 03:27:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 03:27:30,516 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 55 [2020-09-25 03:27:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:30,516 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 03:27:30,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:27:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 03:27:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:27:30,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:30,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:30,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:27:30,518 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash 511170824, now seen corresponding path program 1 times [2020-09-25 03:27:30,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:30,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045968905] [2020-09-25 03:27:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:30,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:27:35,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:27:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 03:27:35,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:27:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 03:27:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 03:27:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:36,552 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 18 [2020-09-25 03:27:41,534 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 149 DAG size of output: 43 [2020-09-25 03:27:54,136 WARN L193 SmtUtils]: Spent 11.34 s on a formula simplification. DAG size of input: 236 DAG size of output: 59 [2020-09-25 03:28:07,586 WARN L193 SmtUtils]: Spent 10.36 s on a formula simplification. DAG size of input: 262 DAG size of output: 75