/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:00:56,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:00:56,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:00:56,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:00:56,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:00:56,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:00:56,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:00:56,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:00:56,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:00:56,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:00:56,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:00:56,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:00:56,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:00:56,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:00:56,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:00:56,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:00:56,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:00:56,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:00:56,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:00:56,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:00:56,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:00:56,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:00:56,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:00:56,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:00:56,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:00:56,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:00:56,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:00:56,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:00:56,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:00:56,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:00:56,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:00:56,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:00:56,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:00:56,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:00:56,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:00:56,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:00:56,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:00:56,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:00:56,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:00:56,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:00:56,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:00:56,507 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 [2020-10-28 15:00:56,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:00:56,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:00:56,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:00:56,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:00:56,543 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:00:56,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:00:56,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:00:56,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:00:56,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:00:56,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:00:56,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:00:56,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:00:56,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:00:56,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:00:56,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:00:56,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:00:56,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:00:56,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:00:56,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:00:56,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:00:56,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:00:56,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:00:56,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:00:56,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:00:56,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:00:56,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:00:56,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:00:56,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:00:56,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:00:56,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:00:56,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:00:57,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:00:57,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:00:57,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:00:57,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:00:57,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-10-28 15:00:57,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c82233340/0183627174c143ce93883d71ebb1deb5/FLAGd39b94401 [2020-10-28 15:00:57,740 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:00:57,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-10-28 15:00:57,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c82233340/0183627174c143ce93883d71ebb1deb5/FLAGd39b94401 [2020-10-28 15:00:58,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c82233340/0183627174c143ce93883d71ebb1deb5 [2020-10-28 15:00:58,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:00:58,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:00:58,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:00:58,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:00:58,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:00:58,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa210c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58, skipping insertion in model container [2020-10-28 15:00:58,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:00:58,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:00:58,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:00:58,409 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:00:58,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:00:58,459 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:00:58,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58 WrapperNode [2020-10-28 15:00:58,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:00:58,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:00:58,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:00:58,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:00:58,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (1/1) ... [2020-10-28 15:00:58,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:00:58,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:00:58,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:00:58,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:00:58,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (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 [2020-10-28 15:00:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:00:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:00:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:00:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:00:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:00:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:00:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:00:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:00:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:00:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:00:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:00:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:00:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:00:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:00:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:00:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:00:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:00:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:00:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:00:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:00:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:00:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:00:59,080 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:00:59,080 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 15:00:59,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:00:59 BoogieIcfgContainer [2020-10-28 15:00:59,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:00:59,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:00:59,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:00:59,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:00:59,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:00:58" (1/3) ... [2020-10-28 15:00:59,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d80747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:00:59, skipping insertion in model container [2020-10-28 15:00:59,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:58" (2/3) ... [2020-10-28 15:00:59,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d80747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:00:59, skipping insertion in model container [2020-10-28 15:00:59,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:00:59" (3/3) ... [2020-10-28 15:00:59,092 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-10-28 15:00:59,106 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:00:59,112 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:00:59,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:00:59,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:00:59,156 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:00:59,156 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:00:59,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:00:59,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:00:59,157 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:00:59,157 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:00:59,157 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:00:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-28 15:00:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:00:59,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:59,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:59,185 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1471395979, now seen corresponding path program 1 times [2020-10-28 15:00:59,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51864407] [2020-10-28 15:00:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:59,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:00:59,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-28 15:00:59,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:59,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 15:00:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:00:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:59,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:59,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 15:00:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:59,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51864407] [2020-10-28 15:00:59,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:59,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:00:59,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214079286] [2020-10-28 15:00:59,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:00:59,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:00:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:00:59,835 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2020-10-28 15:01:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:00,158 INFO L93 Difference]: Finished difference Result 95 states and 167 transitions. [2020-10-28 15:01:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:01:00,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 15:01:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:00,170 INFO L225 Difference]: With dead ends: 95 [2020-10-28 15:01:00,171 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 15:01:00,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:01:00,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 15:01:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 15:01:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 15:01:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2020-10-28 15:01:00,236 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 15 [2020-10-28 15:01:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:00,236 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2020-10-28 15:01:00,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:01:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2020-10-28 15:01:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:01:00,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:00,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:00,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:01:00,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2104128004, now seen corresponding path program 1 times [2020-10-28 15:01:00,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:00,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197368989] [2020-10-28 15:01:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:00,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:00,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:01:00,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 15:01:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:00,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:01:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:01:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:01:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:01:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:00,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:00,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:01:00,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:00,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:01:00,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197368989] [2020-10-28 15:01:00,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:00,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:01:00,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094939055] [2020-10-28 15:01:00,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:01:00,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:00,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:01:00,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:01:00,470 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand 6 states. [2020-10-28 15:01:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:00,852 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2020-10-28 15:01:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:00,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-28 15:01:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:00,856 INFO L225 Difference]: With dead ends: 53 [2020-10-28 15:01:00,856 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 15:01:00,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:01:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 15:01:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-28 15:01:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 15:01:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2020-10-28 15:01:00,881 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 16 [2020-10-28 15:01:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:00,882 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2020-10-28 15:01:00,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:01:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2020-10-28 15:01:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 15:01:00,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:00,883 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:00,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:01:00,884 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash 168819405, now seen corresponding path program 1 times [2020-10-28 15:01:00,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:00,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153624679] [2020-10-28 15:01:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:01,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:01,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 15:01:01,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:01,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 15:01:01,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:01,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:01:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:01:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:01,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:01,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:01,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:01,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:01,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:01,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 15:01:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:01,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:01,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:01,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:01:01,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153624679] [2020-10-28 15:01:01,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:01,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:01:01,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246465430] [2020-10-28 15:01:01,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:01:01,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:01,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:01:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:01:01,204 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand 7 states. [2020-10-28 15:01:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:01,640 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2020-10-28 15:01:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:01,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-28 15:01:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:01,643 INFO L225 Difference]: With dead ends: 66 [2020-10-28 15:01:01,643 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 15:01:01,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:01:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 15:01:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-28 15:01:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 15:01:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-10-28 15:01:01,657 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 21 [2020-10-28 15:01:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:01,657 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-10-28 15:01:01,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:01:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-10-28 15:01:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 15:01:01,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:01,659 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:01,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:01:01,660 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:01,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2100010792, now seen corresponding path program 1 times [2020-10-28 15:01:01,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:01,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126170231] [2020-10-28 15:01:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:01,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:02,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 15:01:02,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-28 15:01:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:02,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:01:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 15:01:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:02,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:02,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 15:01:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:02,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:02,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:02,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:02,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 15:01:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:02,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:02,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:02,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:02,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:01:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:02,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:02,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:02,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:02,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:02,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 15:01:02,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126170231] [2020-10-28 15:01:02,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:01:02,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:01:02,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164548673] [2020-10-28 15:01:02,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:01:02,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:01:02,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:01:02,346 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-10-28 15:01:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:03,049 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2020-10-28 15:01:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:01:03,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-28 15:01:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:03,055 INFO L225 Difference]: With dead ends: 90 [2020-10-28 15:01:03,056 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 15:01:03,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:01:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 15:01:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-28 15:01:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 15:01:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2020-10-28 15:01:03,089 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 36 [2020-10-28 15:01:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:03,091 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2020-10-28 15:01:03,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:01:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2020-10-28 15:01:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 15:01:03,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:03,098 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:03,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:01:03,100 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:03,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2023670277, now seen corresponding path program 1 times [2020-10-28 15:01:03,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:03,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724994796] [2020-10-28 15:01:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:05,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:05,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:01:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:01:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-28 15:01:05,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:05,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:01:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 15:01:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:05,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:05,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:05,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:05,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:05,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:05,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 15:01:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:05,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:05,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:01:05,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:05,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 15:01:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:06,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 15:01:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:06,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:06,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:06,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:01:06,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:06,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 15:01:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:06,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:06,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:06,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:01:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:06,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 15:01:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:06,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:06,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:06,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 15:01:06,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724994796] [2020-10-28 15:01:06,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:06,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:01:06,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614547833] [2020-10-28 15:01:06,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:01:06,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:06,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:01:06,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:01:06,067 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand 10 states. [2020-10-28 15:01:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:06,733 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2020-10-28 15:01:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:01:06,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-28 15:01:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:06,736 INFO L225 Difference]: With dead ends: 80 [2020-10-28 15:01:06,736 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:01:06,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:01:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:01:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:01:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:01:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:01:06,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-10-28 15:01:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:06,739 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:01:06,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:01:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:01:06,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:01:06,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:01:06,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:01:07,700 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 15:01:07,700 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 15:01:07,700 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:01:07,700 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 15:01:07,701 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 15:01:07,701 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:07,701 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-28 15:01:07,701 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:07,702 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:07,702 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:01:07,702 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:01:07,702 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:07,702 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-28 15:01:07,702 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:07,703 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:07,703 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:07,703 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,703 INFO L270 CegarLoopResult]: At program point L60-1(line 60) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,703 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 77) no Hoare annotation was computed. [2020-10-28 15:01:07,703 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,703 INFO L270 CegarLoopResult]: At program point L56-1(line 56) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,704 INFO L270 CegarLoopResult]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (<= 0 main_~t~0) (<= 1 main_~tagbuf_len~0) (or (= main_~tagbuf_len~0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0))) [2020-10-28 15:01:07,704 INFO L270 CegarLoopResult]: At program point L48-3(lines 48 72) the Hoare annotation is: (and (<= 0 main_~t~0) (or (< 1 main_~tagbuf_len~0) (= main_~tagbuf_len~0 1)) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,704 INFO L270 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (and (<= 0 main_~t~0) (or (< 1 main_~tagbuf_len~0) (= main_~tagbuf_len~0 1)) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,704 INFO L270 CegarLoopResult]: At program point L69(line 69) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,704 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 44) the Hoare annotation is: (and (<= 0 main_~t~0) (or (= main_~tagbuf_len~0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0))) [2020-10-28 15:01:07,705 INFO L270 CegarLoopResult]: At program point L32-3(lines 32 44) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,705 INFO L274 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-10-28 15:01:07,705 INFO L274 CegarLoopResult]: For program point L49(lines 49 53) no Hoare annotation was computed. [2020-10-28 15:01:07,705 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,705 INFO L277 CegarLoopResult]: At program point L74(lines 25 77) the Hoare annotation is: true [2020-10-28 15:01:07,705 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,705 INFO L270 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,705 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-10-28 15:01:07,706 INFO L274 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-10-28 15:01:07,706 INFO L274 CegarLoopResult]: For program point L33(lines 33 37) no Hoare annotation was computed. [2020-10-28 15:01:07,706 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-28 15:01:07,706 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-28 15:01:07,706 INFO L274 CegarLoopResult]: For program point L54(lines 54 68) no Hoare annotation was computed. [2020-10-28 15:01:07,706 INFO L270 CegarLoopResult]: At program point L54-1(lines 54 68) the Hoare annotation is: (and (<= 0 main_~t~0) (<= (+ main_~t~0 1) main_~tagbuf_len~0)) [2020-10-28 15:01:07,706 INFO L270 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,706 INFO L270 CegarLoopResult]: At program point L50-1(line 50) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,706 INFO L274 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-10-28 15:01:07,707 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 77) no Hoare annotation was computed. [2020-10-28 15:01:07,707 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-10-28 15:01:07,707 INFO L274 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-10-28 15:01:07,707 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,707 INFO L270 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-28 15:01:07,707 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 77) the Hoare annotation is: true [2020-10-28 15:01:07,707 INFO L274 CegarLoopResult]: For program point L59(lines 59 63) no Hoare annotation was computed. [2020-10-28 15:01:07,707 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-10-28 15:01:07,707 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:01:07,708 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-28 15:01:07,708 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:01:07,708 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:01:07,708 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-28 15:01:07,708 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-28 15:01:07,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:01:07 BoogieIcfgContainer [2020-10-28 15:01:07,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:01:07,731 INFO L168 Benchmark]: Toolchain (without parser) took 9623.66 ms. Allocated memory was 125.8 MB in the beginning and 232.8 MB in the end (delta: 107.0 MB). Free memory was 100.9 MB in the beginning and 133.4 MB in the end (delta: -32.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:07,732 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:01:07,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.33 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 90.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:07,734 INFO L168 Benchmark]: Boogie Preprocessor took 44.23 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:07,735 INFO L168 Benchmark]: RCFGBuilder took 575.88 ms. Allocated memory was 125.8 MB in the beginning and 161.5 MB in the end (delta: 35.7 MB). Free memory was 88.7 MB in the beginning and 141.9 MB in the end (delta: -53.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:07,736 INFO L168 Benchmark]: TraceAbstraction took 8643.42 ms. Allocated memory was 161.5 MB in the beginning and 232.8 MB in the end (delta: 71.3 MB). Free memory was 141.4 MB in the beginning and 133.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 132.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:07,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.33 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 90.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.23 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 575.88 ms. Allocated memory was 125.8 MB in the beginning and 161.5 MB in the end (delta: 35.7 MB). Free memory was 88.7 MB in the beginning and 141.9 MB in the end (delta: -53.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8643.42 ms. Allocated memory was 161.5 MB in the beginning and 232.8 MB in the end (delta: 71.3 MB). Free memory was 141.4 MB in the beginning and 133.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 132.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 32]: Loop Invariant Derived loop invariant: 0 <= t && (tagbuf_len == t || t + 1 <= tagbuf_len) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (0 <= t && 1 <= tagbuf_len) && (tagbuf_len == t || t + 1 <= tagbuf_len) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 282 SDslu, 255 SDs, 0 SdLazy, 794 SolverSat, 314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=4, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 120 PreInvPairs, 156 NumberOfFragments, 205 HoareAnnotationTreeSize, 120 FomulaSimplifications, 372 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 26 FomulaSimplificationsInter, 1137 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 17802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 70/73 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...