/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:13:28,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:28,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:28,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:28,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:28,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:28,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:28,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:28,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:28,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:28,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:28,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:28,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:28,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:28,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:28,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:28,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:28,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:28,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:28,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:28,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:28,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:28,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:28,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:28,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:28,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:28,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:28,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:28,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:28,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:28,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:28,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:28,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:28,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:28,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:28,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:28,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:28,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:28,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:28,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:28,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:28,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:13:28,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:28,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:28,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:28,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:28,136 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:28,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:28,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:28,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:28,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:28,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:28,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:28,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:28,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:28,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:28,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:28,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:28,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:28,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:28,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:28,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:28,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:28,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:28,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:28,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:28,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:28,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:28,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:28,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:28,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:28,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:13:28,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:28,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:28,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:28,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:28,649 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:28,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-09-25 03:13:28,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2ce9fb6/51812f42aa5343a5b9d55eb1c254a60a/FLAG9302c50e3 [2020-09-25 03:13:29,314 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:29,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_9.c [2020-09-25 03:13:29,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2ce9fb6/51812f42aa5343a5b9d55eb1c254a60a/FLAG9302c50e3 [2020-09-25 03:13:29,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2ce9fb6/51812f42aa5343a5b9d55eb1c254a60a [2020-09-25 03:13:29,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:29,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:29,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:29,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:29,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:29,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:29" (1/1) ... [2020-09-25 03:13:29,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:29, skipping insertion in model container [2020-09-25 03:13:29,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:29" (1/1) ... [2020-09-25 03:13:29,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:29,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:29,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:30,003 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:30,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:30,045 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:30,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30 WrapperNode [2020-09-25 03:13:30,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:30,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:30,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:30,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:30,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... [2020-09-25 03:13:30,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:30,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:30,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:30,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:30,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:13:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:30,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:30,687 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:13:30,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:30 BoogieIcfgContainer [2020-09-25 03:13:30,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:30,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:30,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:30,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:30,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:29" (1/3) ... [2020-09-25 03:13:30,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73298cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:30, skipping insertion in model container [2020-09-25 03:13:30,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:30" (2/3) ... [2020-09-25 03:13:30,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73298cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:30, skipping insertion in model container [2020-09-25 03:13:30,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:30" (3/3) ... [2020-09-25 03:13:30,703 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-09-25 03:13:30,713 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:30,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:30,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:30,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:30,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:30,776 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:30,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:30,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:30,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:30,777 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:30,777 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-25 03:13:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 03:13:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:30,813 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 03:13:30,813 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:30,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:30,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1511648252, now seen corresponding path program 1 times [2020-09-25 03:13:30,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:30,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148746050] [2020-09-25 03:13:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 03:13:31,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 03:13:31,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 03:13:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 03:13:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:31,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:31,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:13:31,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:31,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148746050] [2020-09-25 03:13:31,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:31,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:31,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468554341] [2020-09-25 03:13:31,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:31,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:31,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:31,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:31,444 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2020-09-25 03:13:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:31,523 INFO L93 Difference]: Finished difference Result 235 states and 322 transitions. [2020-09-25 03:13:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:31,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-09-25 03:13:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:31,542 INFO L225 Difference]: With dead ends: 235 [2020-09-25 03:13:31,542 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 03:13:31,548 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 03:13:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 03:13:31,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-09-25 03:13:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 03:13:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2020-09-25 03:13:31,615 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 67 [2020-09-25 03:13:31,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:31,616 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2020-09-25 03:13:31,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2020-09-25 03:13:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 03:13:31,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:31,620 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 03:13:31,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:31,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:31,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1267771135, now seen corresponding path program 1 times [2020-09-25 03:13:31,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:31,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896248102] [2020-09-25 03:13:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:13:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 03:13:31,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 03:13:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:31,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:31,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:31,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:31,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896248102] [2020-09-25 03:13:31,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:31,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:31,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077699443] [2020-09-25 03:13:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:31,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:31,864 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand 3 states. [2020-09-25 03:13:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:31,927 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2020-09-25 03:13:31,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:31,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-25 03:13:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:31,951 INFO L225 Difference]: With dead ends: 192 [2020-09-25 03:13:31,952 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 03:13:31,953 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 03:13:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 03:13:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2020-09-25 03:13:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 03:13:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 207 transitions. [2020-09-25 03:13:31,977 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 207 transitions. Word has length 68 [2020-09-25 03:13:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:31,978 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 207 transitions. [2020-09-25 03:13:31,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 207 transitions. [2020-09-25 03:13:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 03:13:31,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:31,985 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 03:13:31,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:31,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:31,986 INFO L82 PathProgramCache]: Analyzing trace with hash -383300170, now seen corresponding path program 1 times [2020-09-25 03:13:31,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:31,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088220374] [2020-09-25 03:13:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:13:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 03:13:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 03:13:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:32,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:13:32,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:32,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088220374] [2020-09-25 03:13:32,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:32,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:32,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577466847] [2020-09-25 03:13:32,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:32,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:32,203 INFO L87 Difference]: Start difference. First operand 158 states and 207 transitions. Second operand 3 states. [2020-09-25 03:13:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:32,259 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2020-09-25 03:13:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:32,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-25 03:13:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:32,265 INFO L225 Difference]: With dead ends: 386 [2020-09-25 03:13:32,265 INFO L226 Difference]: Without dead ends: 269 [2020-09-25 03:13:32,267 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 03:13:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-25 03:13:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2020-09-25 03:13:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 03:13:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 360 transitions. [2020-09-25 03:13:32,286 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 360 transitions. Word has length 68 [2020-09-25 03:13:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:32,287 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 360 transitions. [2020-09-25 03:13:32,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 360 transitions. [2020-09-25 03:13:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:13:32,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:32,290 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 03:13:32,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:32,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:32,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash 113752694, now seen corresponding path program 1 times [2020-09-25 03:13:32,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:32,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091798550] [2020-09-25 03:13:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:13:32,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:13:32,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 03:13:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:13:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:32,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091798550] [2020-09-25 03:13:32,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:32,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:32,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270006510] [2020-09-25 03:13:32,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:32,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:32,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:32,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:32,416 INFO L87 Difference]: Start difference. First operand 267 states and 360 transitions. Second operand 3 states. [2020-09-25 03:13:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:32,444 INFO L93 Difference]: Finished difference Result 327 states and 446 transitions. [2020-09-25 03:13:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:32,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-25 03:13:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:32,452 INFO L225 Difference]: With dead ends: 327 [2020-09-25 03:13:32,452 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 03:13:32,453 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 03:13:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 03:13:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 267. [2020-09-25 03:13:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 03:13:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 358 transitions. [2020-09-25 03:13:32,486 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 358 transitions. Word has length 69 [2020-09-25 03:13:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:32,487 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 358 transitions. [2020-09-25 03:13:32,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 358 transitions. [2020-09-25 03:13:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:13:32,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:32,496 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 03:13:32,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:13:32,497 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1002841264, now seen corresponding path program 1 times [2020-09-25 03:13:32,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:32,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935402527] [2020-09-25 03:13:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:13:32,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:13:32,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 03:13:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:32,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:32,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:32,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935402527] [2020-09-25 03:13:32,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:32,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:32,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834780182] [2020-09-25 03:13:32,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:32,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:32,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:32,611 INFO L87 Difference]: Start difference. First operand 267 states and 358 transitions. Second operand 3 states. [2020-09-25 03:13:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:32,641 INFO L93 Difference]: Finished difference Result 707 states and 976 transitions. [2020-09-25 03:13:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:32,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-25 03:13:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:32,645 INFO L225 Difference]: With dead ends: 707 [2020-09-25 03:13:32,645 INFO L226 Difference]: Without dead ends: 481 [2020-09-25 03:13:32,648 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 03:13:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-09-25 03:13:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2020-09-25 03:13:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 03:13:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 650 transitions. [2020-09-25 03:13:32,666 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 650 transitions. Word has length 69 [2020-09-25 03:13:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:32,666 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 650 transitions. [2020-09-25 03:13:32,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 650 transitions. [2020-09-25 03:13:32,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:13:32,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:32,669 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 03:13:32,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:13:32,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash -8681195, now seen corresponding path program 1 times [2020-09-25 03:13:32,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:32,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466650522] [2020-09-25 03:13:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:13:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:13:32,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 03:13:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:32,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466650522] [2020-09-25 03:13:32,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:32,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:32,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494685700] [2020-09-25 03:13:32,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:32,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:32,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:32,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:32,779 INFO L87 Difference]: Start difference. First operand 479 states and 650 transitions. Second operand 3 states. [2020-09-25 03:13:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:32,800 INFO L93 Difference]: Finished difference Result 587 states and 804 transitions. [2020-09-25 03:13:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:32,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-25 03:13:32,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:32,804 INFO L225 Difference]: With dead ends: 587 [2020-09-25 03:13:32,805 INFO L226 Difference]: Without dead ends: 585 [2020-09-25 03:13:32,806 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 03:13:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-25 03:13:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 479. [2020-09-25 03:13:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 03:13:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 646 transitions. [2020-09-25 03:13:32,822 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 646 transitions. Word has length 70 [2020-09-25 03:13:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:32,823 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 646 transitions. [2020-09-25 03:13:32,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 646 transitions. [2020-09-25 03:13:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:13:32,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:32,825 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 03:13:32,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:13:32,826 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1023553130, now seen corresponding path program 1 times [2020-09-25 03:13:32,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:32,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170900882] [2020-09-25 03:13:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:13:32,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:13:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 03:13:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:32,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:32,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:32,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:32,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:32,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170900882] [2020-09-25 03:13:32,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:32,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:32,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187141052] [2020-09-25 03:13:32,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:32,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:32,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:32,951 INFO L87 Difference]: Start difference. First operand 479 states and 646 transitions. Second operand 3 states. [2020-09-25 03:13:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:33,005 INFO L93 Difference]: Finished difference Result 1331 states and 1824 transitions. [2020-09-25 03:13:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:33,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-25 03:13:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:33,011 INFO L225 Difference]: With dead ends: 1331 [2020-09-25 03:13:33,011 INFO L226 Difference]: Without dead ends: 893 [2020-09-25 03:13:33,014 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 03:13:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-25 03:13:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2020-09-25 03:13:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 03:13:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1202 transitions. [2020-09-25 03:13:33,056 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1202 transitions. Word has length 70 [2020-09-25 03:13:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:33,056 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1202 transitions. [2020-09-25 03:13:33,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1202 transitions. [2020-09-25 03:13:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 03:13:33,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:33,059 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 03:13:33,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:13:33,061 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash 490835914, now seen corresponding path program 1 times [2020-09-25 03:13:33,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:33,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454835817] [2020-09-25 03:13:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:13:33,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:13:33,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 03:13:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,171 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 03:13:33,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454835817] [2020-09-25 03:13:33,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:33,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:33,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389631998] [2020-09-25 03:13:33,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:33,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:33,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:33,173 INFO L87 Difference]: Start difference. First operand 891 states and 1202 transitions. Second operand 3 states. [2020-09-25 03:13:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:33,213 INFO L93 Difference]: Finished difference Result 1087 states and 1476 transitions. [2020-09-25 03:13:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:33,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-25 03:13:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:33,218 INFO L225 Difference]: With dead ends: 1087 [2020-09-25 03:13:33,219 INFO L226 Difference]: Without dead ends: 1085 [2020-09-25 03:13:33,220 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 03:13:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-09-25 03:13:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 891. [2020-09-25 03:13:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 03:13:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1194 transitions. [2020-09-25 03:13:33,248 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1194 transitions. Word has length 71 [2020-09-25 03:13:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:33,249 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1194 transitions. [2020-09-25 03:13:33,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1194 transitions. [2020-09-25 03:13:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 03:13:33,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:33,250 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 03:13:33,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:13:33,251 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1665621348, now seen corresponding path program 1 times [2020-09-25 03:13:33,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:33,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32360483] [2020-09-25 03:13:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:13:33,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:13:33,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 03:13:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:33,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:33,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32360483] [2020-09-25 03:13:33,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:33,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:33,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650507000] [2020-09-25 03:13:33,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:33,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:33,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:33,357 INFO L87 Difference]: Start difference. First operand 891 states and 1194 transitions. Second operand 3 states. [2020-09-25 03:13:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:33,392 INFO L93 Difference]: Finished difference Result 2543 states and 3436 transitions. [2020-09-25 03:13:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:33,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-25 03:13:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:33,402 INFO L225 Difference]: With dead ends: 2543 [2020-09-25 03:13:33,402 INFO L226 Difference]: Without dead ends: 1693 [2020-09-25 03:13:33,404 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 03:13:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-25 03:13:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2020-09-25 03:13:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-25 03:13:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2250 transitions. [2020-09-25 03:13:33,452 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2250 transitions. Word has length 71 [2020-09-25 03:13:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:33,452 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2250 transitions. [2020-09-25 03:13:33,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2250 transitions. [2020-09-25 03:13:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 03:13:33,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:33,455 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 03:13:33,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:13:33,455 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:33,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1204002519, now seen corresponding path program 1 times [2020-09-25 03:13:33,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:33,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849155333] [2020-09-25 03:13:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 03:13:33,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 03:13:33,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 03:13:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:33,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:33,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:33,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849155333] [2020-09-25 03:13:33,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:33,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:33,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850627501] [2020-09-25 03:13:33,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:33,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:33,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:33,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:33,554 INFO L87 Difference]: Start difference. First operand 1691 states and 2250 transitions. Second operand 3 states. [2020-09-25 03:13:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:33,582 INFO L93 Difference]: Finished difference Result 2047 states and 2732 transitions. [2020-09-25 03:13:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:33,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-25 03:13:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:33,593 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 03:13:33,593 INFO L226 Difference]: Without dead ends: 2045 [2020-09-25 03:13:33,594 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 03:13:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-09-25 03:13:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1691. [2020-09-25 03:13:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-25 03:13:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2234 transitions. [2020-09-25 03:13:33,659 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2234 transitions. Word has length 72 [2020-09-25 03:13:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:33,659 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2234 transitions. [2020-09-25 03:13:33,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2234 transitions. [2020-09-25 03:13:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 03:13:33,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:33,662 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 03:13:33,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:13:33,662 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:33,663 INFO L82 PathProgramCache]: Analyzing trace with hash 94899998, now seen corresponding path program 1 times [2020-09-25 03:13:33,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:33,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604134467] [2020-09-25 03:13:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 03:13:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 03:13:33,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 03:13:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:33,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:33,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:33,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604134467] [2020-09-25 03:13:33,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:33,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621061466] [2020-09-25 03:13:33,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:33,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:33,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:33,759 INFO L87 Difference]: Start difference. First operand 1691 states and 2234 transitions. Second operand 3 states. [2020-09-25 03:13:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:33,819 INFO L93 Difference]: Finished difference Result 4895 states and 6492 transitions. [2020-09-25 03:13:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:33,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-25 03:13:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:33,838 INFO L225 Difference]: With dead ends: 4895 [2020-09-25 03:13:33,838 INFO L226 Difference]: Without dead ends: 3245 [2020-09-25 03:13:33,843 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 03:13:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-09-25 03:13:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3243. [2020-09-25 03:13:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-25 03:13:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4234 transitions. [2020-09-25 03:13:33,950 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4234 transitions. Word has length 72 [2020-09-25 03:13:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:33,950 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4234 transitions. [2020-09-25 03:13:33,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4234 transitions. [2020-09-25 03:13:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 03:13:33,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:33,954 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 03:13:33,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:13:33,955 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:33,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:33,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2090581278, now seen corresponding path program 1 times [2020-09-25 03:13:33,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:33,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702409588] [2020-09-25 03:13:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 03:13:34,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 03:13:34,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 03:13:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:13:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:34,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702409588] [2020-09-25 03:13:34,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:34,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:34,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107275975] [2020-09-25 03:13:34,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:34,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:34,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:34,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:34,054 INFO L87 Difference]: Start difference. First operand 3243 states and 4234 transitions. Second operand 3 states. [2020-09-25 03:13:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:34,101 INFO L93 Difference]: Finished difference Result 3887 states and 5068 transitions. [2020-09-25 03:13:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:34,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 03:13:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:34,120 INFO L225 Difference]: With dead ends: 3887 [2020-09-25 03:13:34,120 INFO L226 Difference]: Without dead ends: 3885 [2020-09-25 03:13:34,122 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 03:13:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-09-25 03:13:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3243. [2020-09-25 03:13:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-25 03:13:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4202 transitions. [2020-09-25 03:13:34,220 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4202 transitions. Word has length 73 [2020-09-25 03:13:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:34,221 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4202 transitions. [2020-09-25 03:13:34,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4202 transitions. [2020-09-25 03:13:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 03:13:34,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:34,224 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 03:13:34,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:13:34,225 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1352821224, now seen corresponding path program 1 times [2020-09-25 03:13:34,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:34,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583493853] [2020-09-25 03:13:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 03:13:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:13:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 03:13:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:34,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:34,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:34,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:34,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:34,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583493853] [2020-09-25 03:13:34,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:34,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:34,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544051204] [2020-09-25 03:13:34,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:34,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:34,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:34,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:34,380 INFO L87 Difference]: Start difference. First operand 3243 states and 4202 transitions. Second operand 3 states. [2020-09-25 03:13:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:34,441 INFO L93 Difference]: Finished difference Result 9455 states and 12268 transitions. [2020-09-25 03:13:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:34,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 03:13:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:34,477 INFO L225 Difference]: With dead ends: 9455 [2020-09-25 03:13:34,477 INFO L226 Difference]: Without dead ends: 6253 [2020-09-25 03:13:34,493 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 03:13:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2020-09-25 03:13:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6251. [2020-09-25 03:13:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6251 states. [2020-09-25 03:13:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 7978 transitions. [2020-09-25 03:13:34,683 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 7978 transitions. Word has length 73 [2020-09-25 03:13:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:34,683 INFO L479 AbstractCegarLoop]: Abstraction has 6251 states and 7978 transitions. [2020-09-25 03:13:34,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 7978 transitions. [2020-09-25 03:13:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 03:13:34,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:34,689 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 03:13:34,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:13:34,689 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:34,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1012461522, now seen corresponding path program 1 times [2020-09-25 03:13:34,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:34,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299991510] [2020-09-25 03:13:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 03:13:34,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 03:13:34,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 03:13:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:34,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:34,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:34,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:34,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:34,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:34,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:34,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299991510] [2020-09-25 03:13:34,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:34,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:34,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539400910] [2020-09-25 03:13:34,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:34,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:34,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:34,803 INFO L87 Difference]: Start difference. First operand 6251 states and 7978 transitions. Second operand 3 states. [2020-09-25 03:13:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:34,924 INFO L93 Difference]: Finished difference Result 18287 states and 23340 transitions. [2020-09-25 03:13:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:34,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 03:13:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:34,988 INFO L225 Difference]: With dead ends: 18287 [2020-09-25 03:13:34,988 INFO L226 Difference]: Without dead ends: 12077 [2020-09-25 03:13:35,007 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 03:13:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12077 states. [2020-09-25 03:13:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12077 to 12075. [2020-09-25 03:13:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 03:13:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15146 transitions. [2020-09-25 03:13:35,355 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15146 transitions. Word has length 74 [2020-09-25 03:13:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:35,355 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15146 transitions. [2020-09-25 03:13:35,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15146 transitions. [2020-09-25 03:13:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 03:13:35,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:35,369 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 03:13:35,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:13:35,370 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:35,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1143464253, now seen corresponding path program 1 times [2020-09-25 03:13:35,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:35,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528403229] [2020-09-25 03:13:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 03:13:35,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 03:13:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 03:13:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:35,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:35,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:35,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:35,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528403229] [2020-09-25 03:13:35,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:35,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:35,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084880229] [2020-09-25 03:13:35,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:35,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:35,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:35,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:35,503 INFO L87 Difference]: Start difference. First operand 12075 states and 15146 transitions. Second operand 3 states. [2020-09-25 03:13:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:35,623 INFO L93 Difference]: Finished difference Result 14255 states and 17708 transitions. [2020-09-25 03:13:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:35,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 03:13:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:35,653 INFO L225 Difference]: With dead ends: 14255 [2020-09-25 03:13:35,654 INFO L226 Difference]: Without dead ends: 14253 [2020-09-25 03:13:35,662 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 03:13:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2020-09-25 03:13:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 12075. [2020-09-25 03:13:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 03:13:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15018 transitions. [2020-09-25 03:13:36,004 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15018 transitions. Word has length 74 [2020-09-25 03:13:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:36,005 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15018 transitions. [2020-09-25 03:13:36,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15018 transitions. [2020-09-25 03:13:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 03:13:36,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:36,014 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 03:13:36,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:13:36,014 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1847607922, now seen corresponding path program 1 times [2020-09-25 03:13:36,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:36,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056728465] [2020-09-25 03:13:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 03:13:36,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 03:13:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 03:13:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:36,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:36,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:36,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:36,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:36,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:36,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:36,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:36,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056728465] [2020-09-25 03:13:36,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:36,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:36,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767101083] [2020-09-25 03:13:36,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:36,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:36,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:36,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:36,122 INFO L87 Difference]: Start difference. First operand 12075 states and 15018 transitions. Second operand 3 states. [2020-09-25 03:13:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:36,223 INFO L93 Difference]: Finished difference Result 14127 states and 17324 transitions. [2020-09-25 03:13:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:36,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 03:13:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:36,249 INFO L225 Difference]: With dead ends: 14127 [2020-09-25 03:13:36,249 INFO L226 Difference]: Without dead ends: 14125 [2020-09-25 03:13:36,257 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 03:13:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2020-09-25 03:13:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 12075. [2020-09-25 03:13:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 03:13:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14890 transitions. [2020-09-25 03:13:36,981 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14890 transitions. Word has length 75 [2020-09-25 03:13:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:36,982 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14890 transitions. [2020-09-25 03:13:36,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14890 transitions. [2020-09-25 03:13:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 03:13:36,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:36,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:36,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:13:36,990 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:36,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1321782988, now seen corresponding path program 1 times [2020-09-25 03:13:36,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:36,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502436351] [2020-09-25 03:13:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:37,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 03:13:37,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 03:13:37,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 03:13:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:13:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:37,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:13:37,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:37,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502436351] [2020-09-25 03:13:37,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:37,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:37,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188657342] [2020-09-25 03:13:37,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:37,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:37,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:37,089 INFO L87 Difference]: Start difference. First operand 12075 states and 14890 transitions. Second operand 3 states. [2020-09-25 03:13:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:37,259 INFO L93 Difference]: Finished difference Result 35373 states and 43563 transitions. [2020-09-25 03:13:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:37,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 03:13:37,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:37,283 INFO L225 Difference]: With dead ends: 35373 [2020-09-25 03:13:37,283 INFO L226 Difference]: Without dead ends: 12075 [2020-09-25 03:13:37,322 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 03:13:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12075 states. [2020-09-25 03:13:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12075 to 12075. [2020-09-25 03:13:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 03:13:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14378 transitions. [2020-09-25 03:13:37,526 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14378 transitions. Word has length 75 [2020-09-25 03:13:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:37,526 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14378 transitions. [2020-09-25 03:13:37,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14378 transitions. [2020-09-25 03:13:37,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 03:13:37,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:37,534 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 03:13:37,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:13:37,535 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2093741743, now seen corresponding path program 1 times [2020-09-25 03:13:37,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:37,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280094209] [2020-09-25 03:13:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:37,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 03:13:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 03:13:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:13:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 03:13:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:13:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:37,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:13:37,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:13:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:37,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280094209] [2020-09-25 03:13:37,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:37,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:13:37,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583309174] [2020-09-25 03:13:37,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:13:37,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:13:37,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:13:37,676 INFO L87 Difference]: Start difference. First operand 12075 states and 14378 transitions. Second operand 3 states. [2020-09-25 03:13:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:37,740 INFO L93 Difference]: Finished difference Result 12075 states and 14378 transitions. [2020-09-25 03:13:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:13:37,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 03:13:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:37,741 INFO L225 Difference]: With dead ends: 12075 [2020-09-25 03:13:37,742 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:13:37,758 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 03:13:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:13:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:13:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:13:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:13:37,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2020-09-25 03:13:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:37,760 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:13:37,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:13:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:13:37,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:13:37,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:13:37,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:13:37,796 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:13:37,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:13:37,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:13:37,797 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:13:37,797 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:13:37,797 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:13:37,797 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-09-25 03:13:37,797 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,797 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 03:13:37,797 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-25 03:13:37,798 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,798 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-25 03:13:37,798 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,798 INFO L268 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-09-25 03:13:37,799 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 03:13:37,800 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 03:13:37,801 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-09-25 03:13:37,802 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 03:13:37,802 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 03:13:37,802 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,802 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-25 03:13:37,802 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-09-25 03:13:37,802 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,802 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-25 03:13:37,803 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-09-25 03:13:37,803 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-25 03:13:37,804 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,805 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 03:13:37,805 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 03:13:37,806 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-25 03:13:37,806 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,806 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 03:13:37,806 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 03:13:37,806 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 03:13:37,806 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 03:13:37,807 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,807 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-25 03:13:37,807 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-09-25 03:13:37,809 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 03:13:37,809 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,809 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-09-25 03:13:37,809 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 03:13:37,810 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-25 03:13:37,811 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-25 03:13:37,812 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-25 03:13:37,813 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 03:13:37,814 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 03:13:37,814 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 03:13:37,814 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 03:13:37,814 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 03:13:37,814 INFO L268 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-09-25 03:13:37,814 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 03:13:37,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:13:37 BoogieIcfgContainer [2020-09-25 03:13:37,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:13:37,841 INFO L168 Benchmark]: Toolchain (without parser) took 8170.01 ms. Allocated memory was 138.9 MB in the beginning and 529.5 MB in the end (delta: 390.6 MB). Free memory was 102.5 MB in the beginning and 391.6 MB in the end (delta: -289.1 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:37,842 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 03:13:37,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.27 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:37,847 INFO L168 Benchmark]: Boogie Preprocessor took 123.33 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 179.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:37,850 INFO L168 Benchmark]: RCFGBuilder took 522.29 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 156.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:37,851 INFO L168 Benchmark]: TraceAbstraction took 7142.58 ms. Allocated memory was 201.9 MB in the beginning and 529.5 MB in the end (delta: 327.7 MB). Free memory was 156.1 MB in the beginning and 391.6 MB in the end (delta: -235.5 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:37,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.27 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.33 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 179.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.29 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 156.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7142.58 ms. Allocated memory was 201.9 MB in the beginning and 529.5 MB in the end (delta: 327.7 MB). Free memory was 156.1 MB in the beginning and 391.6 MB in the end (delta: -235.5 MB). Peak memory consumption was 92.2 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: 6.9s, 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, 0.2s 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: 2.3s 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...