/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=SHALLOWEST --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 01:42:12,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:42:12,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:42:12,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:42:12,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:42:12,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:42:12,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:42:12,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:42:13,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:42:13,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:42:13,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:42:13,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:42:13,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:42:13,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:42:13,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:42:13,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:42:13,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:42:13,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:42:13,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:42:13,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:42:13,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:42:13,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:42:13,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:42:13,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:42:13,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:42:13,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:42:13,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:42:13,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:42:13,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:42:13,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:42:13,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:42:13,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:42:13,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:42:13,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:42:13,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:42:13,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:42:13,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:42:13,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:42:13,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:42:13,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:42:13,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:42:13,078 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 01:42:13,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:42:13,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:42:13,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:42:13,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:42:13,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:42:13,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:42:13,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:42:13,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:42:13,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:42:13,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:42:13,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:42:13,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:42:13,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:42:13,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:42:13,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:42:13,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:42:13,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:42:13,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:42:13,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:42:13,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:42:13,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:42:13,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:42:13,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:42:13,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:42:13,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:42:13,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:42:13,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:42:13,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:42:13,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:42:13,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:42:13,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:42:13,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:42:13,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:42:13,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:42:13,532 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:42:13,533 INFO L432 ainManager$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 01:42:13,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ec5aa652/d52ccf22ad854edd817e43432b58e830/FLAG03d9d9ee1 [2020-10-27 01:42:14,186 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:42:14,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-10-27 01:42:14,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ec5aa652/d52ccf22ad854edd817e43432b58e830/FLAG03d9d9ee1 [2020-10-27 01:42:14,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ec5aa652/d52ccf22ad854edd817e43432b58e830 [2020-10-27 01:42:14,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:42:14,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:42:14,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:42:14,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:42:14,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:42:14,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220032e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14, skipping insertion in model container [2020-10-27 01:42:14,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:42:14,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:42:14,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:42:14,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:42:14,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:42:14,833 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:42:14,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14 WrapperNode [2020-10-27 01:42:14,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:42:14,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:42:14,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:42:14,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:42:14,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (1/1) ... [2020-10-27 01:42:14,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:42:14,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:42:14,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:42:14,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:42:14,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (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 01:42:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:42:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:42:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:42:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:42:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:42:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:42:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:42:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:42:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:42:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:42:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:42:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:42:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:42:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:42:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:42:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:42:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:42:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:42:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:42:15,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:42:15,230 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:42:15,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:42:15 BoogieIcfgContainer [2020-10-27 01:42:15,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:42:15,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:42:15,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:42:15,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:42:15,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:42:14" (1/3) ... [2020-10-27 01:42:15,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235b5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:42:15, skipping insertion in model container [2020-10-27 01:42:15,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:42:14" (2/3) ... [2020-10-27 01:42:15,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235b5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:42:15, skipping insertion in model container [2020-10-27 01:42:15,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:42:15" (3/3) ... [2020-10-27 01:42:15,241 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-10-27 01:42:15,256 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:42:15,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:42:15,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:42:15,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:42:15,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:42:15,339 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:42:15,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:42:15,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:42:15,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:42:15,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:42:15,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:42:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-27 01:42:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:42:15,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:42:15,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:42:15,372 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:42:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:42:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1580934512, now seen corresponding path program 1 times [2020-10-27 01:42:15,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:42:15,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150242008] [2020-10-27 01:42:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:42:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:15,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:15,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:42:15,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-27 01:42:15,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:42:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:42:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:42:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:42:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:42:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:16,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:16,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:42:16,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:42:16,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:42:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:42:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:42:16,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:16,304 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 01:42:16,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150242008] [2020-10-27 01:42:16,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:42:16,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:42:16,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319439867] [2020-10-27 01:42:16,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:42:16,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:42:16,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:42:16,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:42:16,332 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-10-27 01:42:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:42:16,665 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-10-27 01:42:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:42:16,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 01:42:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:42:16,677 INFO L225 Difference]: With dead ends: 37 [2020-10-27 01:42:16,677 INFO L226 Difference]: Without dead ends: 15 [2020-10-27 01:42:16,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:42:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-27 01:42:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-27 01:42:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 01:42:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-27 01:42:16,724 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-27 01:42:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:42:16,724 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-27 01:42:16,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:42:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-27 01:42:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 01:42:16,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:42:16,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:42:16,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:42:16,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:42:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:42:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1704202109, now seen corresponding path program 1 times [2020-10-27 01:42:16,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:42:16,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985373251] [2020-10-27 01:42:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:42:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:16,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:42:16,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 01:42:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:42:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:42:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:42:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:42:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:17,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:17,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:42:17,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:42:17,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:42:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:42:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:42:17,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:17,148 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 01:42:17,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985373251] [2020-10-27 01:42:17,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:42:17,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:42:17,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173538061] [2020-10-27 01:42:17,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:42:17,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:42:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:42:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:42:17,152 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2020-10-27 01:42:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:42:17,391 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-27 01:42:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:42:17,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-27 01:42:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:42:17,393 INFO L225 Difference]: With dead ends: 21 [2020-10-27 01:42:17,393 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 01:42:17,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:42:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 01:42:17,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-27 01:42:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 01:42:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-27 01:42:17,402 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-27 01:42:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:42:17,402 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-27 01:42:17,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:42:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-27 01:42:17,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:42:17,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:42:17,403 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:42:17,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:42:17,404 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:42:17,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:42:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1230530320, now seen corresponding path program 2 times [2020-10-27 01:42:17,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:42:17,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120857366] [2020-10-27 01:42:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:42:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:42:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 01:42:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:42:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:42:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:42:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:17,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:42:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:42:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:42:17,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:42:17,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:42:17,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:42:17,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:42:17,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:42:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:42:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:42:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:42:17,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:42:17,706 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 01:42:17,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120857366] [2020-10-27 01:42:17,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:42:17,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:42:17,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130270379] [2020-10-27 01:42:17,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:42:17,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:42:17,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:42:17,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:42:17,709 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-10-27 01:42:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:42:17,858 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-27 01:42:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:42:17,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-27 01:42:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:42:17,859 INFO L225 Difference]: With dead ends: 16 [2020-10-27 01:42:17,859 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:42:17,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:42:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:42:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:42:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:42:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:42:17,861 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-27 01:42:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:42:17,861 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:42:17,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:42:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:42:17,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:42:17,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:42:17,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:42:18,017 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 01:42:18,018 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 01:42:18,018 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 01:42:18,018 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 01:42:18,018 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:42:18,019 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 01:42:18,019 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:42:18,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:42:18,020 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:42:18,020 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:42:18,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:42:18,020 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:42:18,020 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-27 01:42:18,021 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:42:18,021 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:42:18,021 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 70) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-10-27 01:42:18,021 INFO L274 CegarLoopResult]: For program point L25(lines 25 68) no Hoare annotation was computed. [2020-10-27 01:42:18,021 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 70) no Hoare annotation was computed. [2020-10-27 01:42:18,022 INFO L270 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: false [2020-10-27 01:42:18,022 INFO L274 CegarLoopResult]: For program point L53-1(line 53) no Hoare annotation was computed. [2020-10-27 01:42:18,023 INFO L274 CegarLoopResult]: For program point L19(lines 19 69) no Hoare annotation was computed. [2020-10-27 01:42:18,023 INFO L274 CegarLoopResult]: For program point L51(lines 51 60) no Hoare annotation was computed. [2020-10-27 01:42:18,023 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 70) no Hoare annotation was computed. [2020-10-27 01:42:18,024 INFO L274 CegarLoopResult]: For program point L44(lines 44 66) no Hoare annotation was computed. [2020-10-27 01:42:18,024 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 01:42:18,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:42:18 BoogieIcfgContainer [2020-10-27 01:42:18,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:42:18,051 INFO L168 Benchmark]: Toolchain (without parser) took 3491.30 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 101.8 MB in the beginning and 81.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:18,052 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 88.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:42:18,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.31 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:18,056 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 90.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:18,058 INFO L168 Benchmark]: RCFGBuilder took 359.24 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 76.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:18,060 INFO L168 Benchmark]: TraceAbstraction took 2813.42 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 76.2 MB in the beginning and 81.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:42:18,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 88.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.31 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.65 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 90.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 359.24 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 76.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2813.42 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 76.2 MB in the beginning and 81.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 26.5 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: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s 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, 1.3s 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...