/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=1.0 --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_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:57:19,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:19,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:19,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:19,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:19,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:19,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:19,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:19,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:19,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:19,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:19,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:19,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:19,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:19,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:19,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:19,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:19,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:19,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:19,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:19,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:19,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:19,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:19,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:19,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:19,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:19,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:19,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:19,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:19,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:19,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:19,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:19,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:19,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:19,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:19,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:19,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:19,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:19,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:19,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:19,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:19,405 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 08:57:19,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:19,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:19,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:19,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:19,456 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:19,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:19,457 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:19,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:19,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:19,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:19,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:19,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:19,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:19,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:19,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:19,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:19,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:19,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:19,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:19,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:19,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:19,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:19,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:19,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:19,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:19,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:19,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:19,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:19,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:19,463 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:57:19,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:20,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:20,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:20,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:20,019 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:20,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-09-25 08:57:20,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b750578e8/b68cc98288654286b7b2148d09589edf/FLAG3d6e63d12 [2020-09-25 08:57:20,685 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:20,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_9.c [2020-09-25 08:57:20,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b750578e8/b68cc98288654286b7b2148d09589edf/FLAG3d6e63d12 [2020-09-25 08:57:21,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b750578e8/b68cc98288654286b7b2148d09589edf [2020-09-25 08:57:21,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:21,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:21,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:21,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:21,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:21,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a36ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21, skipping insertion in model container [2020-09-25 08:57:21,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:21,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:21,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:21,399 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:21,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:21,440 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:21,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21 WrapperNode [2020-09-25 08:57:21,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:21,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:21,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:21,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:21,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (1/1) ... [2020-09-25 08:57:21,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:21,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:21,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:21,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:21,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (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 08:57:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:57:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:22,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:22,062 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:57:22,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:22 BoogieIcfgContainer [2020-09-25 08:57:22,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:22,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:22,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:22,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:22,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:21" (1/3) ... [2020-09-25 08:57:22,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e2678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:22, skipping insertion in model container [2020-09-25 08:57:22,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:21" (2/3) ... [2020-09-25 08:57:22,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e2678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:22, skipping insertion in model container [2020-09-25 08:57:22,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:22" (3/3) ... [2020-09-25 08:57:22,078 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-09-25 08:57:22,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:22,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:22,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:22,154 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:22,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:22,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:22,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:22,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:22,155 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:22,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:22,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-25 08:57:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 08:57:22,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:22,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:22,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1511648252, now seen corresponding path program 1 times [2020-09-25 08:57:22,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:22,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405664357] [2020-09-25 08:57:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 08:57:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 08:57:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:22,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 08:57:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:57:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:22,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:22,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:22,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:22,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:22,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:22,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:22,728 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 08:57:22,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405664357] [2020-09-25 08:57:22,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:22,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:22,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363407254] [2020-09-25 08:57:22,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:22,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:22,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:22,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:22,765 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2020-09-25 08:57:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:22,862 INFO L93 Difference]: Finished difference Result 235 states and 322 transitions. [2020-09-25 08:57:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:22,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-09-25 08:57:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:22,881 INFO L225 Difference]: With dead ends: 235 [2020-09-25 08:57:22,881 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 08:57:22,886 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 08:57:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 08:57:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-09-25 08:57:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 08:57:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2020-09-25 08:57:22,948 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 67 [2020-09-25 08:57:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:22,949 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2020-09-25 08:57:22,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2020-09-25 08:57:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 08:57:22,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:22,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:22,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:22,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:22,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:22,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1267771135, now seen corresponding path program 1 times [2020-09-25 08:57:22,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:22,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828852593] [2020-09-25 08:57:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 08:57:23,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 08:57:23,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 08:57:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:23,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,164 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 08:57:23,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828852593] [2020-09-25 08:57:23,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957924726] [2020-09-25 08:57:23,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:23,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,169 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand 3 states. [2020-09-25 08:57:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:23,196 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2020-09-25 08:57:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:23,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-25 08:57:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:23,200 INFO L225 Difference]: With dead ends: 192 [2020-09-25 08:57:23,200 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 08:57:23,201 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 08:57:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 08:57:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2020-09-25 08:57:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 08:57:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 207 transitions. [2020-09-25 08:57:23,218 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 207 transitions. Word has length 68 [2020-09-25 08:57:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:23,218 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 207 transitions. [2020-09-25 08:57:23,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 207 transitions. [2020-09-25 08:57:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 08:57:23,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:23,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:23,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:23,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash -383300170, now seen corresponding path program 1 times [2020-09-25 08:57:23,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:23,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883867756] [2020-09-25 08:57:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 08:57:23,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 08:57:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 08:57:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:57:23,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,394 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 08:57:23,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883867756] [2020-09-25 08:57:23,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089344162] [2020-09-25 08:57:23,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:23,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,398 INFO L87 Difference]: Start difference. First operand 158 states and 207 transitions. Second operand 3 states. [2020-09-25 08:57:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:23,444 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2020-09-25 08:57:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:23,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-25 08:57:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:23,451 INFO L225 Difference]: With dead ends: 386 [2020-09-25 08:57:23,452 INFO L226 Difference]: Without dead ends: 269 [2020-09-25 08:57:23,457 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 08:57:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-25 08:57:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2020-09-25 08:57:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 08:57:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 360 transitions. [2020-09-25 08:57:23,498 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 360 transitions. Word has length 68 [2020-09-25 08:57:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:23,501 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 360 transitions. [2020-09-25 08:57:23,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:23,501 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 360 transitions. [2020-09-25 08:57:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:57:23,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:23,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:23,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:23,508 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash 113752694, now seen corresponding path program 1 times [2020-09-25 08:57:23,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:23,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410798687] [2020-09-25 08:57:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:57:23,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 08:57:23,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 08:57:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:23,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,648 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 08:57:23,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410798687] [2020-09-25 08:57:23,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878112677] [2020-09-25 08:57:23,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:23,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,651 INFO L87 Difference]: Start difference. First operand 267 states and 360 transitions. Second operand 3 states. [2020-09-25 08:57:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:23,676 INFO L93 Difference]: Finished difference Result 327 states and 446 transitions. [2020-09-25 08:57:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:23,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-25 08:57:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:23,680 INFO L225 Difference]: With dead ends: 327 [2020-09-25 08:57:23,681 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 08:57:23,682 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 08:57:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 08:57:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 267. [2020-09-25 08:57:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 08:57:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 358 transitions. [2020-09-25 08:57:23,697 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 358 transitions. Word has length 69 [2020-09-25 08:57:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:23,697 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 358 transitions. [2020-09-25 08:57:23,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 358 transitions. [2020-09-25 08:57:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:57:23,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:23,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:23,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:23,700 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1002841264, now seen corresponding path program 1 times [2020-09-25 08:57:23,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:23,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584790216] [2020-09-25 08:57:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:57:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:57:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 08:57:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:23,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,818 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 08:57:23,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584790216] [2020-09-25 08:57:23,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953257070] [2020-09-25 08:57:23,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:23,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,821 INFO L87 Difference]: Start difference. First operand 267 states and 358 transitions. Second operand 3 states. [2020-09-25 08:57:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:23,843 INFO L93 Difference]: Finished difference Result 707 states and 976 transitions. [2020-09-25 08:57:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:23,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-25 08:57:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:23,848 INFO L225 Difference]: With dead ends: 707 [2020-09-25 08:57:23,848 INFO L226 Difference]: Without dead ends: 481 [2020-09-25 08:57:23,850 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 08:57:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-09-25 08:57:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2020-09-25 08:57:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 08:57:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 650 transitions. [2020-09-25 08:57:23,869 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 650 transitions. Word has length 69 [2020-09-25 08:57:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:23,869 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 650 transitions. [2020-09-25 08:57:23,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:23,870 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 650 transitions. [2020-09-25 08:57:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 08:57:23,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:23,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:23,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:57:23,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash -8681195, now seen corresponding path program 1 times [2020-09-25 08:57:23,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:23,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918602292] [2020-09-25 08:57:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 08:57:23,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:57:23,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 08:57:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:23,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,995 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 08:57:23,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918602292] [2020-09-25 08:57:23,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377138927] [2020-09-25 08:57:23,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:24,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,011 INFO L87 Difference]: Start difference. First operand 479 states and 650 transitions. Second operand 3 states. [2020-09-25 08:57:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,037 INFO L93 Difference]: Finished difference Result 587 states and 804 transitions. [2020-09-25 08:57:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-25 08:57:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,041 INFO L225 Difference]: With dead ends: 587 [2020-09-25 08:57:24,042 INFO L226 Difference]: Without dead ends: 585 [2020-09-25 08:57:24,043 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 08:57:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-25 08:57:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 479. [2020-09-25 08:57:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 08:57:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 646 transitions. [2020-09-25 08:57:24,066 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 646 transitions. Word has length 70 [2020-09-25 08:57:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,067 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 646 transitions. [2020-09-25 08:57:24,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 646 transitions. [2020-09-25 08:57:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 08:57:24,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:24,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:24,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:57:24,075 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:24,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:24,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1023553130, now seen corresponding path program 1 times [2020-09-25 08:57:24,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:24,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822989823] [2020-09-25 08:57:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 08:57:24,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 08:57:24,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 08:57:24,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:24,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:24,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,206 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 08:57:24,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822989823] [2020-09-25 08:57:24,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:24,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:24,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767314146] [2020-09-25 08:57:24,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:24,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:24,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,210 INFO L87 Difference]: Start difference. First operand 479 states and 646 transitions. Second operand 3 states. [2020-09-25 08:57:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,242 INFO L93 Difference]: Finished difference Result 1331 states and 1824 transitions. [2020-09-25 08:57:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-25 08:57:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,248 INFO L225 Difference]: With dead ends: 1331 [2020-09-25 08:57:24,248 INFO L226 Difference]: Without dead ends: 893 [2020-09-25 08:57:24,250 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 08:57:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-25 08:57:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2020-09-25 08:57:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 08:57:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1202 transitions. [2020-09-25 08:57:24,273 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1202 transitions. Word has length 70 [2020-09-25 08:57:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,273 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1202 transitions. [2020-09-25 08:57:24,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1202 transitions. [2020-09-25 08:57:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:57:24,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:24,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:24,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:57:24,276 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:24,277 INFO L82 PathProgramCache]: Analyzing trace with hash 490835914, now seen corresponding path program 1 times [2020-09-25 08:57:24,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:24,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048730778] [2020-09-25 08:57:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:57:24,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 08:57:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 08:57:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,370 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 08:57:24,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048730778] [2020-09-25 08:57:24,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:24,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:24,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147180428] [2020-09-25 08:57:24,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:24,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,373 INFO L87 Difference]: Start difference. First operand 891 states and 1202 transitions. Second operand 3 states. [2020-09-25 08:57:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,395 INFO L93 Difference]: Finished difference Result 1087 states and 1476 transitions. [2020-09-25 08:57:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-25 08:57:24,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,400 INFO L225 Difference]: With dead ends: 1087 [2020-09-25 08:57:24,401 INFO L226 Difference]: Without dead ends: 1085 [2020-09-25 08:57:24,401 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 08:57:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-09-25 08:57:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 891. [2020-09-25 08:57:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 08:57:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1194 transitions. [2020-09-25 08:57:24,423 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1194 transitions. Word has length 71 [2020-09-25 08:57:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,424 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1194 transitions. [2020-09-25 08:57:24,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1194 transitions. [2020-09-25 08:57:24,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:57:24,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:24,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:24,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:57:24,426 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1665621348, now seen corresponding path program 1 times [2020-09-25 08:57:24,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:24,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24736711] [2020-09-25 08:57:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:57:24,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 08:57:24,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 08:57:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:24,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,532 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 08:57:24,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24736711] [2020-09-25 08:57:24,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:24,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:24,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537580197] [2020-09-25 08:57:24,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:24,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:24,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,539 INFO L87 Difference]: Start difference. First operand 891 states and 1194 transitions. Second operand 3 states. [2020-09-25 08:57:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,573 INFO L93 Difference]: Finished difference Result 2543 states and 3436 transitions. [2020-09-25 08:57:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-25 08:57:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,583 INFO L225 Difference]: With dead ends: 2543 [2020-09-25 08:57:24,583 INFO L226 Difference]: Without dead ends: 1693 [2020-09-25 08:57:24,585 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 08:57:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-25 08:57:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2020-09-25 08:57:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-25 08:57:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2250 transitions. [2020-09-25 08:57:24,646 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2250 transitions. Word has length 71 [2020-09-25 08:57:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,646 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2250 transitions. [2020-09-25 08:57:24,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2250 transitions. [2020-09-25 08:57:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 08:57:24,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:24,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:24,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:57:24,649 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1204002519, now seen corresponding path program 1 times [2020-09-25 08:57:24,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:24,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023568384] [2020-09-25 08:57:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 08:57:24,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 08:57:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 08:57:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:24,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:24,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,744 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 08:57:24,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023568384] [2020-09-25 08:57:24,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:24,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:24,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329226765] [2020-09-25 08:57:24,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:24,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:24,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,747 INFO L87 Difference]: Start difference. First operand 1691 states and 2250 transitions. Second operand 3 states. [2020-09-25 08:57:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,773 INFO L93 Difference]: Finished difference Result 2047 states and 2732 transitions. [2020-09-25 08:57:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-25 08:57:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,784 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 08:57:24,784 INFO L226 Difference]: Without dead ends: 2045 [2020-09-25 08:57:24,785 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 08:57:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-09-25 08:57:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1691. [2020-09-25 08:57:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-25 08:57:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2234 transitions. [2020-09-25 08:57:24,827 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2234 transitions. Word has length 72 [2020-09-25 08:57:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,827 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2234 transitions. [2020-09-25 08:57:24,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2234 transitions. [2020-09-25 08:57:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 08:57:24,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:24,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:24,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:57:24,830 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:24,830 INFO L82 PathProgramCache]: Analyzing trace with hash 94899998, now seen corresponding path program 1 times [2020-09-25 08:57:24,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:24,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760700731] [2020-09-25 08:57:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 08:57:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 08:57:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 08:57:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:24,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:24,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:24,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:24,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:24,916 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 08:57:24,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760700731] [2020-09-25 08:57:24,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:24,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:24,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497170792] [2020-09-25 08:57:24,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:24,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:24,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,918 INFO L87 Difference]: Start difference. First operand 1691 states and 2234 transitions. Second operand 3 states. [2020-09-25 08:57:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,961 INFO L93 Difference]: Finished difference Result 4895 states and 6492 transitions. [2020-09-25 08:57:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-25 08:57:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,976 INFO L225 Difference]: With dead ends: 4895 [2020-09-25 08:57:24,976 INFO L226 Difference]: Without dead ends: 3245 [2020-09-25 08:57:24,980 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 08:57:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-09-25 08:57:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3243. [2020-09-25 08:57:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-25 08:57:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4234 transitions. [2020-09-25 08:57:25,053 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4234 transitions. Word has length 72 [2020-09-25 08:57:25,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:25,054 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4234 transitions. [2020-09-25 08:57:25,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4234 transitions. [2020-09-25 08:57:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:57:25,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:25,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:25,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:57:25,057 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:25,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:25,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2090581278, now seen corresponding path program 1 times [2020-09-25 08:57:25,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:25,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492045148] [2020-09-25 08:57:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:57:25,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 08:57:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 08:57:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:25,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,171 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 08:57:25,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492045148] [2020-09-25 08:57:25,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:25,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:25,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472008043] [2020-09-25 08:57:25,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:25,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:25,173 INFO L87 Difference]: Start difference. First operand 3243 states and 4234 transitions. Second operand 3 states. [2020-09-25 08:57:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:25,213 INFO L93 Difference]: Finished difference Result 3887 states and 5068 transitions. [2020-09-25 08:57:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:25,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 08:57:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:25,230 INFO L225 Difference]: With dead ends: 3887 [2020-09-25 08:57:25,230 INFO L226 Difference]: Without dead ends: 3885 [2020-09-25 08:57:25,232 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 08:57:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-09-25 08:57:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3243. [2020-09-25 08:57:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-25 08:57:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4202 transitions. [2020-09-25 08:57:25,336 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4202 transitions. Word has length 73 [2020-09-25 08:57:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:25,337 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4202 transitions. [2020-09-25 08:57:25,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4202 transitions. [2020-09-25 08:57:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:57:25,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:25,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:25,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:57:25,341 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1352821224, now seen corresponding path program 1 times [2020-09-25 08:57:25,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:25,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846057606] [2020-09-25 08:57:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:57:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:57:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 08:57:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:25,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:25,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,444 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 08:57:25,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846057606] [2020-09-25 08:57:25,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:25,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:25,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663393310] [2020-09-25 08:57:25,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:25,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:25,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:25,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:25,446 INFO L87 Difference]: Start difference. First operand 3243 states and 4202 transitions. Second operand 3 states. [2020-09-25 08:57:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:25,533 INFO L93 Difference]: Finished difference Result 9455 states and 12268 transitions. [2020-09-25 08:57:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:25,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 08:57:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:25,566 INFO L225 Difference]: With dead ends: 9455 [2020-09-25 08:57:25,566 INFO L226 Difference]: Without dead ends: 6253 [2020-09-25 08:57:25,576 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 08:57:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2020-09-25 08:57:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6251. [2020-09-25 08:57:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6251 states. [2020-09-25 08:57:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 7978 transitions. [2020-09-25 08:57:25,806 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 7978 transitions. Word has length 73 [2020-09-25 08:57:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:25,807 INFO L479 AbstractCegarLoop]: Abstraction has 6251 states and 7978 transitions. [2020-09-25 08:57:25,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 7978 transitions. [2020-09-25 08:57:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 08:57:25,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:25,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:25,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:57:25,869 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1012461522, now seen corresponding path program 1 times [2020-09-25 08:57:25,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:25,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111425689] [2020-09-25 08:57:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:57:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 08:57:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 08:57:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:25,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:25,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:25,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:25,963 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 08:57:25,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111425689] [2020-09-25 08:57:25,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:25,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:25,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289346546] [2020-09-25 08:57:25,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:25,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:25,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:25,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:25,965 INFO L87 Difference]: Start difference. First operand 6251 states and 7978 transitions. Second operand 3 states. [2020-09-25 08:57:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:26,079 INFO L93 Difference]: Finished difference Result 18287 states and 23340 transitions. [2020-09-25 08:57:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:26,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 08:57:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:26,122 INFO L225 Difference]: With dead ends: 18287 [2020-09-25 08:57:26,122 INFO L226 Difference]: Without dead ends: 12077 [2020-09-25 08:57:26,137 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 08:57:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12077 states. [2020-09-25 08:57:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12077 to 12075. [2020-09-25 08:57:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 08:57:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15146 transitions. [2020-09-25 08:57:26,497 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15146 transitions. Word has length 74 [2020-09-25 08:57:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:26,498 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15146 transitions. [2020-09-25 08:57:26,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15146 transitions. [2020-09-25 08:57:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 08:57:26,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:26,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:26,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:57:26,509 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1143464253, now seen corresponding path program 1 times [2020-09-25 08:57:26,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:26,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955873529] [2020-09-25 08:57:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:26,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:57:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:57:26,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:26,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 08:57:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:26,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:26,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:26,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:26,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:26,622 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 08:57:26,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955873529] [2020-09-25 08:57:26,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:26,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:26,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877931073] [2020-09-25 08:57:26,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:26,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:26,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:26,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:26,624 INFO L87 Difference]: Start difference. First operand 12075 states and 15146 transitions. Second operand 3 states. [2020-09-25 08:57:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:26,736 INFO L93 Difference]: Finished difference Result 14255 states and 17708 transitions. [2020-09-25 08:57:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:26,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 08:57:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:26,772 INFO L225 Difference]: With dead ends: 14255 [2020-09-25 08:57:26,773 INFO L226 Difference]: Without dead ends: 14253 [2020-09-25 08:57:26,780 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 08:57:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2020-09-25 08:57:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 12075. [2020-09-25 08:57:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 08:57:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15018 transitions. [2020-09-25 08:57:27,079 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15018 transitions. Word has length 74 [2020-09-25 08:57:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:27,080 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15018 transitions. [2020-09-25 08:57:27,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15018 transitions. [2020-09-25 08:57:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:57:27,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:27,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:27,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:57:27,090 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:27,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1847607922, now seen corresponding path program 1 times [2020-09-25 08:57:27,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:27,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771168901] [2020-09-25 08:57:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 08:57:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 08:57:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 08:57:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:27,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:27,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:27,285 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 08:57:27,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771168901] [2020-09-25 08:57:27,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:27,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:27,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673055303] [2020-09-25 08:57:27,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:27,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:27,289 INFO L87 Difference]: Start difference. First operand 12075 states and 15018 transitions. Second operand 3 states. [2020-09-25 08:57:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:27,399 INFO L93 Difference]: Finished difference Result 14127 states and 17324 transitions. [2020-09-25 08:57:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:27,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 08:57:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:27,428 INFO L225 Difference]: With dead ends: 14127 [2020-09-25 08:57:27,428 INFO L226 Difference]: Without dead ends: 14125 [2020-09-25 08:57:27,435 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 08:57:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2020-09-25 08:57:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 12075. [2020-09-25 08:57:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 08:57:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14890 transitions. [2020-09-25 08:57:27,696 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14890 transitions. Word has length 75 [2020-09-25 08:57:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:27,696 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14890 transitions. [2020-09-25 08:57:27,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14890 transitions. [2020-09-25 08:57:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:57:27,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:27,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:27,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:57:27,707 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1321782988, now seen corresponding path program 1 times [2020-09-25 08:57:27,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:27,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797355666] [2020-09-25 08:57:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 08:57:27,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:57:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 08:57:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:27,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:27,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:27,802 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 08:57:27,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797355666] [2020-09-25 08:57:27,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:27,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:27,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386202983] [2020-09-25 08:57:27,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:27,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:27,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:27,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:27,805 INFO L87 Difference]: Start difference. First operand 12075 states and 14890 transitions. Second operand 3 states. [2020-09-25 08:57:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:28,088 INFO L93 Difference]: Finished difference Result 35373 states and 43563 transitions. [2020-09-25 08:57:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:28,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 08:57:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:28,114 INFO L225 Difference]: With dead ends: 35373 [2020-09-25 08:57:28,114 INFO L226 Difference]: Without dead ends: 12075 [2020-09-25 08:57:28,156 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 08:57:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12075 states. [2020-09-25 08:57:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12075 to 12075. [2020-09-25 08:57:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 08:57:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14378 transitions. [2020-09-25 08:57:28,425 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14378 transitions. Word has length 75 [2020-09-25 08:57:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:28,425 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14378 transitions. [2020-09-25 08:57:28,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14378 transitions. [2020-09-25 08:57:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:57:28,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:28,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:28,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:57:28,440 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2093741743, now seen corresponding path program 1 times [2020-09-25 08:57:28,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:28,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161324286] [2020-09-25 08:57:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:57:28,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:57:28,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:28,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 08:57:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:28,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:28,538 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 08:57:28,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161324286] [2020-09-25 08:57:28,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:28,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:28,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641451905] [2020-09-25 08:57:28,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:28,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:28,544 INFO L87 Difference]: Start difference. First operand 12075 states and 14378 transitions. Second operand 3 states. [2020-09-25 08:57:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:28,613 INFO L93 Difference]: Finished difference Result 12075 states and 14378 transitions. [2020-09-25 08:57:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:28,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 08:57:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:28,614 INFO L225 Difference]: With dead ends: 12075 [2020-09-25 08:57:28,614 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 08:57:28,632 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 08:57:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 08:57:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 08:57:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 08:57:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 08:57:28,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2020-09-25 08:57:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:28,634 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 08:57:28,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 08:57:28,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 08:57:28,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 08:57:28,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 08:57:28,665 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 08:57:28,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:57:28,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:57:28,665 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 08:57:28,666 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 08:57:28,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:57:28,666 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-09-25 08:57:28,666 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,666 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 08:57:28,666 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-25 08:57:28,666 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,667 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-25 08:57:28,667 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,667 INFO L268 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-09-25 08:57:28,668 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-09-25 08:57:28,668 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-25 08:57:28,668 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 08:57:28,668 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 08:57:28,668 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 08:57:28,668 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 08:57:28,669 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 08:57:28,669 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 08:57:28,669 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 08:57:28,669 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-09-25 08:57:28,669 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,669 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-25 08:57:28,670 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-09-25 08:57:28,670 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 08:57:28,670 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 08:57:28,670 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-09-25 08:57:28,670 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 08:57:28,670 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 08:57:28,671 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,671 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-25 08:57:28,671 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-09-25 08:57:28,671 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,671 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 08:57:28,671 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-25 08:57:28,671 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-25 08:57:28,672 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 08:57:28,672 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 08:57:28,672 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 08:57:28,672 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-25 08:57:28,672 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-09-25 08:57:28,672 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 08:57:28,673 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 08:57:28,674 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-25 08:57:28,674 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,674 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 08:57:28,674 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 08:57:28,675 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-25 08:57:28,675 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,675 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 08:57:28,675 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 08:57:28,675 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 08:57:28,675 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 08:57:28,676 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,676 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-25 08:57:28,676 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-09-25 08:57:28,677 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 08:57:28,677 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 08:57:28,678 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 08:57:28,679 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-09-25 08:57:28,679 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 08:57:28,679 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,679 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-09-25 08:57:28,679 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 08:57:28,679 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,680 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-25 08:57:28,681 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-25 08:57:28,682 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-25 08:57:28,682 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 08:57:28,682 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 08:57:28,682 INFO L268 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-09-25 08:57:28,682 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,682 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-25 08:57:28,683 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-25 08:57:28,683 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 08:57:28,683 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 08:57:28,684 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 08:57:28,684 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 08:57:28,684 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 08:57:28,684 INFO L268 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-09-25 08:57:28,684 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 08:57:28,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:57:28 BoogieIcfgContainer [2020-09-25 08:57:28,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:57:28,705 INFO L168 Benchmark]: Toolchain (without parser) took 7660.61 ms. Allocated memory was 143.1 MB in the beginning and 412.1 MB in the end (delta: 269.0 MB). Free memory was 106.8 MB in the beginning and 67.3 MB in the end (delta: 39.5 MB). Peak memory consumption was 308.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:28,706 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 08:57:28,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.46 ms. Allocated memory is still 143.1 MB. Free memory was 106.1 MB in the beginning and 95.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:28,713 INFO L168 Benchmark]: Boogie Preprocessor took 120.09 ms. Allocated memory was 143.1 MB in the beginning and 203.4 MB in the end (delta: 60.3 MB). Free memory was 95.6 MB in the beginning and 181.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:28,713 INFO L168 Benchmark]: RCFGBuilder took 506.94 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 157.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:28,714 INFO L168 Benchmark]: TraceAbstraction took 6631.33 ms. Allocated memory was 203.4 MB in the beginning and 412.1 MB in the end (delta: 208.7 MB). Free memory was 157.8 MB in the beginning and 67.3 MB in the end (delta: 90.5 MB). Peak memory consumption was 299.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:28,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.46 ms. Allocated memory is still 143.1 MB. Free memory was 106.1 MB in the beginning and 95.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.09 ms. Allocated memory was 143.1 MB in the beginning and 203.4 MB in the end (delta: 60.3 MB). Free memory was 95.6 MB in the beginning and 181.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.94 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 157.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6631.33 ms. Allocated memory was 203.4 MB in the beginning and 412.1 MB in the end (delta: 208.7 MB). Free memory was 157.8 MB in the beginning and 67.3 MB in the end (delta: 90.5 MB). Peak memory consumption was 299.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: 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: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2944 SDtfs, 1068 SDslu, 2096 SDs, 0 SdLazy, 89 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12075occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 5630 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 521 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1287 NumberOfCodeBlocks, 1287 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1269 ConstructedInterpolants, 0 QuantifiedInterpolants, 113709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...