/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-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:20:42,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:20:42,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:20:42,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:20:42,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:20:42,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:20:42,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:20:42,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:20:42,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:20:42,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:20:42,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:20:42,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:20:42,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:20:42,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:20:42,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:20:42,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:20:42,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:20:42,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:20:42,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:20:42,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:20:42,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:20:42,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:20:42,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:20:42,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:20:42,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:20:42,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:20:42,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:20:42,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:20:42,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:20:42,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:20:42,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:20:42,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:20:42,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:20:42,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:20:42,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:20:42,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:20:42,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:20:42,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:20:42,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:20:42,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:20:42,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:20:42,497 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 20:20:42,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:20:42,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:20:42,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:20:42,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:20:42,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:20:42,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:20:42,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:20:42,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:20:42,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:20:42,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:20:42,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:20:42,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:20:42,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:20:42,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:20:42,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:20:42,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:20:42,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:20:42,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:20:42,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:20:42,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:20:42,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:20:42,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:20:42,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:20:42,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:20:42,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:20:42,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:20:42,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:20:42,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:20:42,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:20:42,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:20:43,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:20:43,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:20:43,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:20:43,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:20:43,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:20:43,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-10-27 20:20:43,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fbab7fe2/976291299bfd417d86a9968c4c82ea4f/FLAG3f3453673 [2020-10-27 20:20:43,765 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:20:43,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-10-27 20:20:43,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fbab7fe2/976291299bfd417d86a9968c4c82ea4f/FLAG3f3453673 [2020-10-27 20:20:44,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fbab7fe2/976291299bfd417d86a9968c4c82ea4f [2020-10-27 20:20:44,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:20:44,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:20:44,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:20:44,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:20:44,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:20:44,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae72c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44, skipping insertion in model container [2020-10-27 20:20:44,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:20:44,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:20:44,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:20:44,428 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:20:44,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:20:44,467 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:20:44,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44 WrapperNode [2020-10-27 20:20:44,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:20:44,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:20:44,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:20:44,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:20:44,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (1/1) ... [2020-10-27 20:20:44,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:20:44,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:20:44,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:20:44,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:20:44,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (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 20:20:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:20:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:20:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:20:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:20:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:20:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:20:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:20:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:20:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:20:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:20:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:20:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:20:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:20:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:20:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:20:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:20:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:20:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:20:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:20:44,921 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:20:44,922 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 20:20:44,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:20:44 BoogieIcfgContainer [2020-10-27 20:20:44,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:20:44,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:20:44,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:20:44,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:20:44,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:20:44" (1/3) ... [2020-10-27 20:20:44,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1e74ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:20:44, skipping insertion in model container [2020-10-27 20:20:44,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:44" (2/3) ... [2020-10-27 20:20:44,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1e74ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:20:44, skipping insertion in model container [2020-10-27 20:20:44,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:20:44" (3/3) ... [2020-10-27 20:20:44,953 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-10-27 20:20:44,967 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:20:44,973 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:20:44,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:20:45,034 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:20:45,034 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:20:45,034 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:20:45,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:20:45,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:20:45,035 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:20:45,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:20:45,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:20:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-27 20:20:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:20:45,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:20:45,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:20:45,066 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:20:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:20:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1580934512, now seen corresponding path program 1 times [2020-10-27 20:20:45,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:20:45,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252405804] [2020-10-27 20:20:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:20:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:45,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:45,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:20:45,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-27 20:20:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:20:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:20:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:20:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:20:45,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:20:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:45,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:20:45,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:20:45,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:45,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:20:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:20:45,929 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 20:20:45,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252405804] [2020-10-27 20:20:45,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:20:45,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:20:45,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859276455] [2020-10-27 20:20:45,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:20:45,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:20:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:20:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:20:45,958 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-10-27 20:20:46,268 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-27 20:20:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:20:46,655 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-10-27 20:20:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:20:46,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 20:20:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:20:46,666 INFO L225 Difference]: With dead ends: 37 [2020-10-27 20:20:46,667 INFO L226 Difference]: Without dead ends: 15 [2020-10-27 20:20:46,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:20:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-27 20:20:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-27 20:20:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 20:20:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-27 20:20:46,714 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-27 20:20:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:20:46,714 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-27 20:20:46,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:20:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-27 20:20:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 20:20:46,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:20:46,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:20:46,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:20:46,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:20:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:20:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1704202109, now seen corresponding path program 1 times [2020-10-27 20:20:46,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:20:46,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152440915] [2020-10-27 20:20:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:20:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:46,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:46,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:46,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:20:46,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-27 20:20:46,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:20:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:20:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:20:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:20:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:20:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:20:47,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:20:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:20:47,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152440915] [2020-10-27 20:20:47,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:20:47,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:20:47,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369993265] [2020-10-27 20:20:47,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:20:47,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:20:47,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:20:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:20:47,280 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2020-10-27 20:20:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:20:47,695 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-27 20:20:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:20:47,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-27 20:20:47,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:20:47,697 INFO L225 Difference]: With dead ends: 21 [2020-10-27 20:20:47,697 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 20:20:47,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:20:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 20:20:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-27 20:20:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 20:20:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-27 20:20:47,705 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-27 20:20:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:20:47,705 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-27 20:20:47,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:20:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-27 20:20:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:20:47,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:20:47,706 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:20:47,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:20:47,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:20:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:20:47,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1230530320, now seen corresponding path program 2 times [2020-10-27 20:20:47,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:20:47,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126426541] [2020-10-27 20:20:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:20:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:47,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:20:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 20:20:47,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:20:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:20:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:20:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:48,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:20:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:48,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:20:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:20:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:20:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:20:48,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126426541] [2020-10-27 20:20:48,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:20:48,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:20:48,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072817940] [2020-10-27 20:20:48,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:20:48,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:20:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:20:48,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:20:48,125 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-10-27 20:20:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:20:48,390 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-27 20:20:48,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:20:48,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-27 20:20:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:20:48,391 INFO L225 Difference]: With dead ends: 16 [2020-10-27 20:20:48,391 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:20:48,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:20:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:20:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:20:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:20:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:20:48,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-27 20:20:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:20:48,393 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:20:48,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:20:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:20:48,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:20:48,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:20:48,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:20:48,585 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 20:20:48,586 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 20:20:48,586 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 20:20:48,586 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 20:20:48,587 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:20:48,587 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)|) (= |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)|) (= ~__return_72~0 |old(~__return_72~0)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:20:48,587 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:20:48,587 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:20:48,587 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:20:48,588 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:20:48,588 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:20:48,588 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:20:48,588 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-27 20:20:48,588 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:20:48,588 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:20:48,588 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 70) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point L25(lines 25 68) no Hoare annotation was computed. [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 70) no Hoare annotation was computed. [2020-10-27 20:20:48,589 INFO L270 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: false [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point L53-1(line 53) no Hoare annotation was computed. [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point L19(lines 19 69) no Hoare annotation was computed. [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point L51(lines 51 60) no Hoare annotation was computed. [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 70) no Hoare annotation was computed. [2020-10-27 20:20:48,589 INFO L274 CegarLoopResult]: For program point L44(lines 44 66) no Hoare annotation was computed. [2020-10-27 20:20:48,590 INFO L270 CegarLoopResult]: At program point L40(lines 30 68) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (or (not (= main_~main__j~0 main_~main__i~0)) (= main_~main__x~0 main_~main__y~0))) [2020-10-27 20:20:48,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:20:48 BoogieIcfgContainer [2020-10-27 20:20:48,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:20:48,611 INFO L168 Benchmark]: Toolchain (without parser) took 4475.00 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 133.6 MB in the beginning and 99.8 MB in the end (delta: 33.8 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:48,612 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:20:48,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.46 ms. Allocated memory is still 158.3 MB. Free memory was 132.9 MB in the beginning and 122.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:48,614 INFO L168 Benchmark]: Boogie Preprocessor took 37.48 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:48,615 INFO L168 Benchmark]: RCFGBuilder took 428.78 ms. Allocated memory is still 158.3 MB. Free memory was 121.6 MB in the beginning and 141.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:48,616 INFO L168 Benchmark]: TraceAbstraction took 3665.42 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 141.3 MB in the beginning and 99.8 MB in the end (delta: 41.5 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:48,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.46 ms. Allocated memory is still 158.3 MB. Free memory was 132.9 MB in the beginning and 122.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.48 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 428.78 ms. Allocated memory is still 158.3 MB. Free memory was 121.6 MB in the beginning and 141.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3665.42 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 141.3 MB in the beginning and 99.8 MB in the end (delta: 41.5 MB). Peak memory consumption was 74.4 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: 30]: Loop Invariant Derived loop invariant: \old(__return_72) == __return_72 && (!(main__j == main__i) || main__x == main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 49 SDslu, 60 SDs, 0 SdLazy, 102 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 56 HoareAnnotationTreeSize, 9 FomulaSimplifications, 138 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 67 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 3316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/4 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...