/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:19:01,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:19:01,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:19:01,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:19:01,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:19:01,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:19:01,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:19:02,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:19:02,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:19:02,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:19:02,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:19:02,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:19:02,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:19:02,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:19:02,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:19:02,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:19:02,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:19:02,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:19:02,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:19:02,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:19:02,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:19:02,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:19:02,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:19:02,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:19:02,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:19:02,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:19:02,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:19:02,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:19:02,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:19:02,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:19:02,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:19:02,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:19:02,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:19:02,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:19:02,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:19:02,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:19:02,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:19:02,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:19:02,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:19:02,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:19:02,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:19:02,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:19:02,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:19:02,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:19:02,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:19:02,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:19:02,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:19:02,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:19:02,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:19:02,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:19:02,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:19:02,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:19:02,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:19:02,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:19:02,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:19:02,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:19:02,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:19:02,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:19:02,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:19:02,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:19:02,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:19:02,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:19:02,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:19:02,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:19:02,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:19:02,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:19:02,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:19:02,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:19:02,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:19:02,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:19:02,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:19:02,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:19:02,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:19:02,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:19:02,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:19:02,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:19:02,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:19:02,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-10-27 20:19:02,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5f0de6de/fe0acb62130e4b4aa9c86d3be3b78098/FLAG00c1bc91c [2020-10-27 20:19:03,354 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:19:03,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-10-27 20:19:03,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5f0de6de/fe0acb62130e4b4aa9c86d3be3b78098/FLAG00c1bc91c [2020-10-27 20:19:03,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5f0de6de/fe0acb62130e4b4aa9c86d3be3b78098 [2020-10-27 20:19:03,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:19:03,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:19:03,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:19:03,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:19:03,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:19:03,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:03" (1/1) ... [2020-10-27 20:19:03,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606cba56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:03, skipping insertion in model container [2020-10-27 20:19:03,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:03" (1/1) ... [2020-10-27 20:19:03,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:19:03,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:19:03,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:19:04,019 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:19:04,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:19:04,131 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:19:04,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04 WrapperNode [2020-10-27 20:19:04,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:19:04,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:19:04,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:19:04,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:19:04,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... [2020-10-27 20:19:04,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:19:04,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:19:04,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:19:04,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:19:04,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:19:04,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:19:04,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:19:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:19:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:19:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:19:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:19:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:19:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:19:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:19:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:19:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:19:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:19:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:19:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:19:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:19:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:19:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:19:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:19:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:19:05,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:19:05,148 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 20:19:05,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:19:05 BoogieIcfgContainer [2020-10-27 20:19:05,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:19:05,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:19:05,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:19:05,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:19:05,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:19:03" (1/3) ... [2020-10-27 20:19:05,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38666bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:19:05, skipping insertion in model container [2020-10-27 20:19:05,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:04" (2/3) ... [2020-10-27 20:19:05,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38666bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:19:05, skipping insertion in model container [2020-10-27 20:19:05,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:19:05" (3/3) ... [2020-10-27 20:19:05,160 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2020-10-27 20:19:05,172 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:19:05,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:19:05,191 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:19:05,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:19:05,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:19:05,222 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:19:05,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:19:05,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:19:05,223 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:19:05,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:19:05,223 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:19:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-27 20:19:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 20:19:05,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:05,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:05,252 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:05,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1761043542, now seen corresponding path program 1 times [2020-10-27 20:19:05,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:05,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625209234] [2020-10-27 20:19:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:05,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:05,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:19:05,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 20:19:05,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:19:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:19:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:19:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:19:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:05,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:05,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:19:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:05,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625209234] [2020-10-27 20:19:05,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:05,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:19:05,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677956862] [2020-10-27 20:19:05,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:19:05,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:19:05,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:19:05,842 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-10-27 20:19:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:06,180 INFO L93 Difference]: Finished difference Result 92 states and 139 transitions. [2020-10-27 20:19:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:06,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-27 20:19:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:06,193 INFO L225 Difference]: With dead ends: 92 [2020-10-27 20:19:06,194 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 20:19:06,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 20:19:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2020-10-27 20:19:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 20:19:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2020-10-27 20:19:06,256 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 14 [2020-10-27 20:19:06,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:06,257 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2020-10-27 20:19:06,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:19:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2020-10-27 20:19:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:19:06,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:06,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:06,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:19:06,259 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:06,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1340443989, now seen corresponding path program 1 times [2020-10-27 20:19:06,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:06,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846585439] [2020-10-27 20:19:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:06,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:19:06,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:19:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 20:19:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:19:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:19:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:19:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:19:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:06,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846585439] [2020-10-27 20:19:06,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:06,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:06,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331149919] [2020-10-27 20:19:06,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:06,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:06,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:06,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:06,637 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand 5 states. [2020-10-27 20:19:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:07,038 INFO L93 Difference]: Finished difference Result 117 states and 170 transitions. [2020-10-27 20:19:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:19:07,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-27 20:19:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:07,040 INFO L225 Difference]: With dead ends: 117 [2020-10-27 20:19:07,040 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 20:19:07,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:19:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 20:19:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 46. [2020-10-27 20:19:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 20:19:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2020-10-27 20:19:07,058 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 15 [2020-10-27 20:19:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:07,058 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2020-10-27 20:19:07,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2020-10-27 20:19:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:19:07,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:07,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:07,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:19:07,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1242212429, now seen corresponding path program 1 times [2020-10-27 20:19:07,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:07,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437386005] [2020-10-27 20:19:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:07,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:07,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:07,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:19:07,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:07,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 20:19:07,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:07,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:19:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:07,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:19:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:07,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437386005] [2020-10-27 20:19:07,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:07,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:07,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339828787] [2020-10-27 20:19:07,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:07,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:07,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:07,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:07,315 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 5 states. [2020-10-27 20:19:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:07,588 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 20:19:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:07,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-27 20:19:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:07,590 INFO L225 Difference]: With dead ends: 62 [2020-10-27 20:19:07,590 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 20:19:07,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 20:19:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-10-27 20:19:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 20:19:07,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2020-10-27 20:19:07,605 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 15 [2020-10-27 20:19:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:07,606 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2020-10-27 20:19:07,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2020-10-27 20:19:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 20:19:07,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:07,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:07,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:19:07,607 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:07,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1395909301, now seen corresponding path program 1 times [2020-10-27 20:19:07,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:07,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162526295] [2020-10-27 20:19:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:07,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:07,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:19:07,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:07,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 20:19:07,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:19:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:07,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:07,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:19:07,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:07,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162526295] [2020-10-27 20:19:07,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:07,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:07,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639831629] [2020-10-27 20:19:07,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:07,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:07,753 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand 5 states. [2020-10-27 20:19:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:08,029 INFO L93 Difference]: Finished difference Result 77 states and 106 transitions. [2020-10-27 20:19:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:08,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 20:19:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:08,031 INFO L225 Difference]: With dead ends: 77 [2020-10-27 20:19:08,031 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 20:19:08,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 20:19:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 44. [2020-10-27 20:19:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:19:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2020-10-27 20:19:08,045 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 16 [2020-10-27 20:19:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:08,045 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2020-10-27 20:19:08,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2020-10-27 20:19:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 20:19:08,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:08,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:08,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:19:08,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:08,047 INFO L82 PathProgramCache]: Analyzing trace with hash -323511465, now seen corresponding path program 1 times [2020-10-27 20:19:08,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:08,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810432413] [2020-10-27 20:19:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:08,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:19:08,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 20:19:08,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:19:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:08,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:08,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:19:08,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:19:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810432413] [2020-10-27 20:19:08,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:08,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:08,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957237612] [2020-10-27 20:19:08,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:08,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:08,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:08,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:08,271 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand 6 states. [2020-10-27 20:19:08,709 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-27 20:19:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:08,864 INFO L93 Difference]: Finished difference Result 77 states and 105 transitions. [2020-10-27 20:19:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:19:08,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-27 20:19:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:08,866 INFO L225 Difference]: With dead ends: 77 [2020-10-27 20:19:08,866 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 20:19:08,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:19:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 20:19:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 43. [2020-10-27 20:19:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 20:19:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-10-27 20:19:08,880 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 17 [2020-10-27 20:19:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:08,880 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-10-27 20:19:08,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-10-27 20:19:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 20:19:08,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:08,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:08,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:19:08,882 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash -234239127, now seen corresponding path program 1 times [2020-10-27 20:19:08,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:08,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49178706] [2020-10-27 20:19:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:09,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:09,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:19:09,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:19:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 20:19:09,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:19:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:19:09,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:09,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:09,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:09,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49178706] [2020-10-27 20:19:09,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:09,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:09,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778936844] [2020-10-27 20:19:09,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:09,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:09,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:09,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:09,132 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand 5 states. [2020-10-27 20:19:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:09,467 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2020-10-27 20:19:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:19:09,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-27 20:19:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:09,469 INFO L225 Difference]: With dead ends: 71 [2020-10-27 20:19:09,469 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 20:19:09,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:19:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 20:19:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 42. [2020-10-27 20:19:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 20:19:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2020-10-27 20:19:09,483 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2020-10-27 20:19:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:09,483 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2020-10-27 20:19:09,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2020-10-27 20:19:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 20:19:09,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:09,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:09,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:19:09,485 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1438913011, now seen corresponding path program 1 times [2020-10-27 20:19:09,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:09,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996563132] [2020-10-27 20:19:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:09,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:09,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 20:19:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 20:19:09,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:19:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:19:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:09,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:09,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:09,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:19:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:09,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996563132] [2020-10-27 20:19:09,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:09,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:09,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133020548] [2020-10-27 20:19:09,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:09,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:09,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:09,657 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2020-10-27 20:19:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:09,971 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2020-10-27 20:19:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:09,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-27 20:19:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:09,973 INFO L225 Difference]: With dead ends: 76 [2020-10-27 20:19:09,973 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 20:19:09,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 20:19:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41. [2020-10-27 20:19:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 20:19:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-10-27 20:19:09,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 18 [2020-10-27 20:19:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:09,988 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-10-27 20:19:09,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-10-27 20:19:09,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 20:19:09,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:09,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:09,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:19:09,989 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1328540162, now seen corresponding path program 1 times [2020-10-27 20:19:09,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:09,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144893399] [2020-10-27 20:19:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 20:19:10,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:19:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 20:19:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:19:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:19:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:10,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:19:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:10,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144893399] [2020-10-27 20:19:10,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:10,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:10,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375024099] [2020-10-27 20:19:10,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:10,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:10,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:10,338 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 6 states. [2020-10-27 20:19:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:10,556 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2020-10-27 20:19:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:10,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 20:19:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:10,558 INFO L225 Difference]: With dead ends: 57 [2020-10-27 20:19:10,558 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 20:19:10,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:19:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 20:19:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2020-10-27 20:19:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 20:19:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-27 20:19:10,570 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 18 [2020-10-27 20:19:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:10,570 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-27 20:19:10,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-27 20:19:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 20:19:10,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:10,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:10,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:19:10,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:10,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1764905525, now seen corresponding path program 1 times [2020-10-27 20:19:10,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:10,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529017128] [2020-10-27 20:19:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:10,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:10,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:19:10,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:10,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 20:19:10,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:19:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:10,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:10,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:10,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:19:10,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:10,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:10,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529017128] [2020-10-27 20:19:10,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:10,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:10,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808140883] [2020-10-27 20:19:10,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:10,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:10,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:10,783 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 6 states. [2020-10-27 20:19:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:11,176 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-27 20:19:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:19:11,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 20:19:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:11,180 INFO L225 Difference]: With dead ends: 57 [2020-10-27 20:19:11,180 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 20:19:11,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:19:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 20:19:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-27 20:19:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 20:19:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2020-10-27 20:19:11,192 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 19 [2020-10-27 20:19:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:11,193 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-27 20:19:11,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2020-10-27 20:19:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 20:19:11,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:11,194 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] [2020-10-27 20:19:11,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:19:11,194 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1122529892, now seen corresponding path program 1 times [2020-10-27 20:19:11,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:11,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864982329] [2020-10-27 20:19:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:11,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:11,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 20:19:11,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 20:19:11,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:19:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:19:11,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:19:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:11,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:11,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:11,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:19:11,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:11,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:11,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:11,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864982329] [2020-10-27 20:19:11,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:11,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:11,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739922494] [2020-10-27 20:19:11,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:11,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:11,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:11,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:11,331 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 5 states. [2020-10-27 20:19:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:11,508 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-27 20:19:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:11,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-27 20:19:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:11,510 INFO L225 Difference]: With dead ends: 58 [2020-10-27 20:19:11,510 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 20:19:11,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 20:19:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2020-10-27 20:19:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 20:19:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-10-27 20:19:11,520 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 20 [2020-10-27 20:19:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:11,520 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-27 20:19:11,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-10-27 20:19:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:19:11,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:11,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:11,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:19:11,522 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:11,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash 438718509, now seen corresponding path program 1 times [2020-10-27 20:19:11,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:11,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251854326] [2020-10-27 20:19:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:11,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:11,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 20:19:11,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 20:19:11,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:19:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:19:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:11,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:11,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:19:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:11,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251854326] [2020-10-27 20:19:11,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:11,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:11,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964127784] [2020-10-27 20:19:11,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:11,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:11,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:11,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:11,691 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 5 states. [2020-10-27 20:19:12,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:12,001 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-27 20:19:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:19:12,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 20:19:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:12,003 INFO L225 Difference]: With dead ends: 67 [2020-10-27 20:19:12,003 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 20:19:12,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:19:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 20:19:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2020-10-27 20:19:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 20:19:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-27 20:19:12,014 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 21 [2020-10-27 20:19:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:12,015 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-27 20:19:12,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-27 20:19:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 20:19:12,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:12,016 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] [2020-10-27 20:19:12,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:19:12,016 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:12,017 INFO L82 PathProgramCache]: Analyzing trace with hash 715406022, now seen corresponding path program 1 times [2020-10-27 20:19:12,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:12,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363027367] [2020-10-27 20:19:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:12,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:12,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:19:12,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:19:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-27 20:19:12,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:19:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:19:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:19:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:12,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:12,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:12,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363027367] [2020-10-27 20:19:12,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:12,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:19:12,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062735516] [2020-10-27 20:19:12,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:19:12,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:19:12,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:12,604 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 7 states. [2020-10-27 20:19:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:12,977 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-27 20:19:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:19:12,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-27 20:19:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:12,978 INFO L225 Difference]: With dead ends: 57 [2020-10-27 20:19:12,978 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 20:19:12,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:19:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 20:19:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2020-10-27 20:19:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 20:19:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 20:19:12,988 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 22 [2020-10-27 20:19:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:12,988 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 20:19:12,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:19:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 20:19:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:19:12,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:12,990 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] [2020-10-27 20:19:12,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:19:12,990 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:12,991 INFO L82 PathProgramCache]: Analyzing trace with hash 702788239, now seen corresponding path program 1 times [2020-10-27 20:19:12,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:12,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704137572] [2020-10-27 20:19:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:13,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:13,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:19:13,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 20:19:13,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:13,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:13,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:19:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:13,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:13,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:13,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:13,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:13,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:13,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704137572] [2020-10-27 20:19:13,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:13,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:19:13,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352441611] [2020-10-27 20:19:13,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:19:13,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:13,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:19:13,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:13,181 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 7 states. [2020-10-27 20:19:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:13,658 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-10-27 20:19:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:19:13,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-27 20:19:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:13,659 INFO L225 Difference]: With dead ends: 62 [2020-10-27 20:19:13,659 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 20:19:13,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:19:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 20:19:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-10-27 20:19:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 20:19:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-27 20:19:13,669 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2020-10-27 20:19:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:13,669 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-27 20:19:13,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:19:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-27 20:19:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 20:19:13,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:13,670 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] [2020-10-27 20:19:13,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:19:13,671 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:13,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:13,671 INFO L82 PathProgramCache]: Analyzing trace with hash 311640872, now seen corresponding path program 1 times [2020-10-27 20:19:13,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:13,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420708706] [2020-10-27 20:19:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:19:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:19:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 20:19:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 20:19:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:19:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:13,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:13,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:13,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420708706] [2020-10-27 20:19:13,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:13,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:13,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726616076] [2020-10-27 20:19:13,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:13,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:13,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:13,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:13,965 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 6 states. [2020-10-27 20:19:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:14,356 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-27 20:19:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:19:14,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 20:19:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:14,358 INFO L225 Difference]: With dead ends: 58 [2020-10-27 20:19:14,358 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 20:19:14,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:19:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 20:19:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2020-10-27 20:19:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 20:19:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-27 20:19:14,371 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 24 [2020-10-27 20:19:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:14,372 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-27 20:19:14,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-27 20:19:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 20:19:14,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:14,373 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] [2020-10-27 20:19:14,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:19:14,373 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:14,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1070978289, now seen corresponding path program 1 times [2020-10-27 20:19:14,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:14,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081365336] [2020-10-27 20:19:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:14,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:14,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:19:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 20:19:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:19:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:14,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:14,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:14,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:14,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081365336] [2020-10-27 20:19:14,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:14,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:19:14,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422364515] [2020-10-27 20:19:14,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:19:14,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:14,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:19:14,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:14,608 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2020-10-27 20:19:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:15,054 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-27 20:19:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:19:15,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-27 20:19:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:15,055 INFO L225 Difference]: With dead ends: 62 [2020-10-27 20:19:15,055 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 20:19:15,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:19:15,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 20:19:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2020-10-27 20:19:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 20:19:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 20:19:15,064 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2020-10-27 20:19:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:15,064 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 20:19:15,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:19:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 20:19:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:19:15,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:15,065 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] [2020-10-27 20:19:15,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:19:15,066 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:15,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:15,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1159361654, now seen corresponding path program 1 times [2020-10-27 20:19:15,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:15,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073190507] [2020-10-27 20:19:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:15,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:19:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:19:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-27 20:19:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 20:19:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:19:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:15,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:15,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:15,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:15,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:15,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:15,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073190507] [2020-10-27 20:19:15,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:15,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:15,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798327777] [2020-10-27 20:19:15,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:15,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:15,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:15,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:15,665 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-27 20:19:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:16,030 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-27 20:19:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:19:16,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 20:19:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:16,031 INFO L225 Difference]: With dead ends: 76 [2020-10-27 20:19:16,031 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:19:16,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:19:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:19:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:19:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:19:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:19:16,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-10-27 20:19:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:16,033 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:19:16,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:19:16,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:19:16,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:19:16,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:19:16,492 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 86 [2020-10-27 20:19:16,783 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 78 [2020-10-27 20:19:17,307 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 136 [2020-10-27 20:19:17,535 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 20 [2020-10-27 20:19:18,057 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 34 [2020-10-27 20:19:18,062 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 20:19:18,063 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 20:19:18,063 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 20:19:18,064 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 20:19:18,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:19:18,064 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_334~0 |old(~__return_334~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:19:18,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:19:18,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:19:18,064 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:19:18,064 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:19:18,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L270 CegarLoopResult]: At program point L217(line 217) the Hoare annotation is: false [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 313) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point L217-1(line 217) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point L151(lines 151 281) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point L110(lines 110 123) no Hoare annotation was computed. [2020-10-27 20:19:18,065 INFO L274 CegarLoopResult]: For program point L36(lines 36 300) no Hoare annotation was computed. [2020-10-27 20:19:18,066 INFO L270 CegarLoopResult]: At program point L193(line 193) the Hoare annotation is: false [2020-10-27 20:19:18,066 INFO L274 CegarLoopResult]: For program point L193-1(line 193) no Hoare annotation was computed. [2020-10-27 20:19:18,066 INFO L274 CegarLoopResult]: For program point L86(lines 86 127) no Hoare annotation was computed. [2020-10-27 20:19:18,066 INFO L274 CegarLoopResult]: For program point L20(lines 20 312) no Hoare annotation was computed. [2020-10-27 20:19:18,066 INFO L274 CegarLoopResult]: For program point L243(lines 243 267) no Hoare annotation was computed. [2020-10-27 20:19:18,066 INFO L270 CegarLoopResult]: At program point L177(line 177) the Hoare annotation is: false [2020-10-27 20:19:18,066 INFO L274 CegarLoopResult]: For program point L177-1(line 177) no Hoare annotation was computed. [2020-10-27 20:19:18,067 INFO L274 CegarLoopResult]: For program point L45(lines 45 288) no Hoare annotation was computed. [2020-10-27 20:19:18,067 INFO L270 CegarLoopResult]: At program point L293(lines 38 294) the Hoare annotation is: (and (<= 0 main_~main__i~0) (< main_~main__i~0 main_~main__len~0) (<= 0 main_~main__j~0) (<= (+ main_~main__j~0 5) main_~main__bufsize~0) (= |old(~__return_334~0)| ~__return_334~0) (<= (+ main_~main__limit~0 4) main_~main__bufsize~0)) [2020-10-27 20:19:18,067 INFO L274 CegarLoopResult]: For program point L227(lines 227 269) no Hoare annotation was computed. [2020-10-27 20:19:18,067 INFO L270 CegarLoopResult]: At program point L153(line 153) the Hoare annotation is: false [2020-10-27 20:19:18,067 INFO L274 CegarLoopResult]: For program point L153-1(line 153) no Hoare annotation was computed. [2020-10-27 20:19:18,067 INFO L270 CegarLoopResult]: At program point L112(line 112) the Hoare annotation is: false [2020-10-27 20:19:18,067 INFO L274 CegarLoopResult]: For program point L112-1(line 112) no Hoare annotation was computed. [2020-10-27 20:19:18,067 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 313) no Hoare annotation was computed. [2020-10-27 20:19:18,068 INFO L274 CegarLoopResult]: For program point L203(lines 203 273) no Hoare annotation was computed. [2020-10-27 20:19:18,069 INFO L274 CegarLoopResult]: For program point L38(lines 38 294) no Hoare annotation was computed. [2020-10-27 20:19:18,069 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 313) the Hoare annotation is: (= |old(~__return_334~0)| ~__return_334~0) [2020-10-27 20:19:18,069 INFO L270 CegarLoopResult]: At program point L88(line 88) the Hoare annotation is: false [2020-10-27 20:19:18,069 INFO L274 CegarLoopResult]: For program point L88-1(line 88) no Hoare annotation was computed. [2020-10-27 20:19:18,069 INFO L270 CegarLoopResult]: At program point L245(line 245) the Hoare annotation is: false [2020-10-27 20:19:18,069 INFO L274 CegarLoopResult]: For program point L245-1(line 245) no Hoare annotation was computed. [2020-10-27 20:19:18,069 INFO L270 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: false [2020-10-27 20:19:18,069 INFO L274 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L270 CegarLoopResult]: At program point L229(line 229) the Hoare annotation is: false [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L229-1(line 229) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L163(lines 163 279) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L270 CegarLoopResult]: At program point L304(lines 25 312) the Hoare annotation is: (and (<= 0 main_~main__i~0) (= |old(~__return_334~0)| ~__return_334~0) (<= (+ main_~main__limit~0 4) main_~main__bufsize~0)) [2020-10-27 20:19:18,070 INFO L270 CegarLoopResult]: At program point L205(line 205) the Hoare annotation is: false [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L205-1(line 205) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L139(lines 139 283) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L98(lines 98 125) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L255(lines 255 265) no Hoare annotation was computed. [2020-10-27 20:19:18,070 INFO L274 CegarLoopResult]: For program point L57(lines 57 286) no Hoare annotation was computed. [2020-10-27 20:19:18,071 INFO L274 CegarLoopResult]: For program point L74(lines 74 129) no Hoare annotation was computed. [2020-10-27 20:19:18,071 INFO L270 CegarLoopResult]: At program point L264(lines 31 306) the Hoare annotation is: (let ((.cse5 (<= (+ main_~main__j~0 4) main_~main__bufsize~0)) (.cse0 (<= 0 main_~main__i~0)) (.cse1 (<= 0 main_~main__j~0)) (.cse2 (= |old(~__return_334~0)| ~__return_334~0)) (.cse3 (<= (+ main_~main__limit~0 4) main_~main__bufsize~0))) (let ((.cse4 (or (and .cse0 .cse1 .cse5 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 (<= 1 main_~__VERIFIER_assert__cond~12))))) (or (and .cse0 .cse1 (< main_~main__i~0 main_~main__len~0) .cse2 .cse3) (and .cse4 .cse5) (and .cse4 (<= 1 main_~__VERIFIER_assert__cond~14))))) [2020-10-27 20:19:18,071 INFO L270 CegarLoopResult]: At program point L165(line 165) the Hoare annotation is: false [2020-10-27 20:19:18,071 INFO L274 CegarLoopResult]: For program point L165-1(line 165) no Hoare annotation was computed. [2020-10-27 20:19:18,071 INFO L274 CegarLoopResult]: For program point L66(lines 66 285) no Hoare annotation was computed. [2020-10-27 20:19:18,071 INFO L274 CegarLoopResult]: For program point L215(lines 215 271) no Hoare annotation was computed. [2020-10-27 20:19:18,071 INFO L270 CegarLoopResult]: At program point L141(line 141) the Hoare annotation is: false [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L141-1(line 141) no Hoare annotation was computed. [2020-10-27 20:19:18,072 INFO L270 CegarLoopResult]: At program point L100(line 100) the Hoare annotation is: false [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L100-1(line 100) no Hoare annotation was computed. [2020-10-27 20:19:18,072 INFO L270 CegarLoopResult]: At program point L257(line 257) the Hoare annotation is: false [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L257-1(line 257) no Hoare annotation was computed. [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L191(lines 191 275) no Hoare annotation was computed. [2020-10-27 20:19:18,072 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: false [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L175(lines 175 277) no Hoare annotation was computed. [2020-10-27 20:19:18,072 INFO L270 CegarLoopResult]: At program point L76(line 76) the Hoare annotation is: false [2020-10-27 20:19:18,072 INFO L274 CegarLoopResult]: For program point L76-1(line 76) no Hoare annotation was computed. [2020-10-27 20:19:18,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:19:18 BoogieIcfgContainer [2020-10-27 20:19:18,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:19:18,127 INFO L168 Benchmark]: Toolchain (without parser) took 14404.91 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 134.3 MB in the beginning and 205.8 MB in the end (delta: -71.5 MB). Peak memory consumption was 157.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:18,128 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 159.4 MB. Free memory was 132.6 MB in the beginning and 132.5 MB in the end (delta: 79.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:19:18,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.00 ms. Allocated memory is still 159.4 MB. Free memory was 133.7 MB in the beginning and 121.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:18,134 INFO L168 Benchmark]: Boogie Preprocessor took 95.39 ms. Allocated memory is still 159.4 MB. Free memory was 121.7 MB in the beginning and 119.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:18,135 INFO L168 Benchmark]: RCFGBuilder took 920.00 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 130.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:18,136 INFO L168 Benchmark]: TraceAbstraction took 12971.47 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 129.4 MB in the beginning and 205.8 MB in the end (delta: -76.4 MB). Peak memory consumption was 150.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:18,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 159.4 MB. Free memory was 132.6 MB in the beginning and 132.5 MB in the end (delta: 79.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 404.00 ms. Allocated memory is still 159.4 MB. Free memory was 133.7 MB in the beginning and 121.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.39 ms. Allocated memory is still 159.4 MB. Free memory was 121.7 MB in the beginning and 119.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 920.00 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 130.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12971.47 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 129.4 MB in the beginning and 205.8 MB in the end (delta: -76.4 MB). Peak memory consumption was 150.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 31]: Loop Invariant Derived loop invariant: (((((0 <= main__i && 0 <= main__j) && main__i < main__len) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) || ((((((0 <= main__i && 0 <= main__j) && main__j + 4 <= main__bufsize) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) || ((((0 <= main__i && 0 <= main__j) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) && 1 <= __VERIFIER_assert__cond)) && main__j + 4 <= main__bufsize)) || ((((((0 <= main__i && 0 <= main__j) && main__j + 4 <= main__bufsize) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) || ((((0 <= main__i && 0 <= main__j) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) && 1 <= __VERIFIER_assert__cond)) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((0 <= main__i && main__i < main__len) && 0 <= main__j) && main__j + 5 <= main__bufsize) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (0 <= main__i && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.8s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 908 SDtfs, 1560 SDslu, 568 SDs, 0 SdLazy, 1235 SolverSat, 285 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 340 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 53 PreInvPairs, 65 NumberOfFragments, 201 HoareAnnotationTreeSize, 53 FomulaSimplifications, 300908857 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 45964 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 23537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...