/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/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:20:26,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:20:26,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:20:26,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:20:26,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:20:26,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:20:26,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:20:26,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:20:26,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:20:26,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:20:26,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:20:26,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:20:26,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:20:26,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:20:27,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:20:27,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:20:27,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:20:27,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:20:27,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:20:27,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:20:27,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:20:27,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:20:27,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:20:27,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:20:27,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:20:27,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:20:27,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:20:27,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:20:27,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:20:27,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:20:27,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:20:27,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:20:27,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:20:27,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:20:27,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:20:27,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:20:27,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:20:27,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:20:27,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:20:27,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:20:27,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:20:27,070 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 20:20:27,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:20:27,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:20:27,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:20:27,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:20:27,123 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:20:27,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:20:27,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:20:27,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:20:27,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:20:27,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:20:27,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:20:27,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:20:27,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:20:27,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:20:27,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:20:27,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:20:27,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:20:27,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:20:27,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:20:27,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:20:27,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:20:27,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:20:27,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:20:27,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:20:27,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:20:27,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:20:27,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:20:27,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:20:27,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:20:27,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:20:27,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:20:27,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:20:27,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:20:27,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:20:27,583 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:20:27,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-10-27 20:20:27,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60fe3cd8b/c048641d824f4e00a1c1a94759521998/FLAG397897cf7 [2020-10-27 20:20:28,259 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:20:28,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-10-27 20:20:28,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60fe3cd8b/c048641d824f4e00a1c1a94759521998/FLAG397897cf7 [2020-10-27 20:20:28,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60fe3cd8b/c048641d824f4e00a1c1a94759521998 [2020-10-27 20:20:28,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:20:28,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:20:28,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:20:28,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:20:28,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:20:28,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f6f4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28, skipping insertion in model container [2020-10-27 20:20:28,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:20:28,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:20:28,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:20:28,844 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:20:28,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:20:28,881 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:20:28,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28 WrapperNode [2020-10-27 20:20:28,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:20:28,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:20:28,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:20:28,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:20:28,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (1/1) ... [2020-10-27 20:20:28,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:20:28,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:20:28,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:20:28,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:20:28,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (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 20:20:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:20:29,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:20:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:20:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:20:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:20:29,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:20:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:20:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:20:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:20:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:20:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:20:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:20:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:20:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:20:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:20:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:20:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:20:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:20:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:20:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:20:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:20:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:20:29,420 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:20:29,421 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:20:29,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:20:29 BoogieIcfgContainer [2020-10-27 20:20:29,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:20:29,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:20:29,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:20:29,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:20:29,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:20:28" (1/3) ... [2020-10-27 20:20:29,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de74186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:20:29, skipping insertion in model container [2020-10-27 20:20:29,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:20:28" (2/3) ... [2020-10-27 20:20:29,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de74186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:20:29, skipping insertion in model container [2020-10-27 20:20:29,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:20:29" (3/3) ... [2020-10-27 20:20:29,432 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-10-27 20:20:29,446 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:20:29,452 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:20:29,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:20:29,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:20:29,497 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:20:29,497 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:20:29,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:20:29,498 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:20:29,498 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:20:29,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:20:29,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:20:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-27 20:20:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 20:20:29,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:20:29,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:20:29,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:20:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:20:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash -875364728, now seen corresponding path program 1 times [2020-10-27 20:20:29,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:20:29,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911726127] [2020-10-27 20:20:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:20:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:29,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:20:29,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 20:20:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:20:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:29,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:20:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:20:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:20:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:20:29,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:20:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:30,000 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 20:20:30,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911726127] [2020-10-27 20:20:30,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:20:30,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:20:30,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458893299] [2020-10-27 20:20:30,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:20:30,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:20:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:20:30,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:20:30,027 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-27 20:20:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:20:30,097 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-10-27 20:20:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:20:30,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-27 20:20:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:20:30,108 INFO L225 Difference]: With dead ends: 39 [2020-10-27 20:20:30,108 INFO L226 Difference]: Without dead ends: 15 [2020-10-27 20:20:30,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:20:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-27 20:20:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-27 20:20:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 20:20:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-27 20:20:30,153 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2020-10-27 20:20:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:20:30,153 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-27 20:20:30,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:20:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-27 20:20:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 20:20:30,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:20:30,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:20:30,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:20:30,155 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:20:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:20:30,156 INFO L82 PathProgramCache]: Analyzing trace with hash -130412156, now seen corresponding path program 1 times [2020-10-27 20:20:30,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:20:30,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576289122] [2020-10-27 20:20:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:20:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:30,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:30,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:20:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 20:20:30,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:20:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:20:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:20:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:20:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:30,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:30,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:20:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:20:30,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:20:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:30,337 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 20:20:30,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576289122] [2020-10-27 20:20:30,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:20:30,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:20:30,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413449657] [2020-10-27 20:20:30,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:20:30,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:20:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:20:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:20:30,342 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-10-27 20:20:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:20:30,463 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-27 20:20:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:20:30,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-27 20:20:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:20:30,465 INFO L225 Difference]: With dead ends: 23 [2020-10-27 20:20:30,465 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 20:20:30,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:20:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 20:20:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-27 20:20:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 20:20:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-27 20:20:30,474 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-27 20:20:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:20:30,475 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-27 20:20:30,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:20:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-27 20:20:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:20:30,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:20:30,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:20:30,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:20:30,477 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:20:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:20:30,478 INFO L82 PathProgramCache]: Analyzing trace with hash -958125858, now seen corresponding path program 1 times [2020-10-27 20:20:30,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:20:30,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369774996] [2020-10-27 20:20:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:20:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:30,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:30,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:20:30,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 20:20:30,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:20:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:20:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:20:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:30,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:20:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:20:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:20:30,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:20:30,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:20:30,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:20:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:20:30,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:20:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:20:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:20:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:20:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:20:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:20:30,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369774996] [2020-10-27 20:20:30,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:20:30,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:20:30,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804367992] [2020-10-27 20:20:30,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:20:30,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:20:30,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:20:30,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:20:30,923 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-10-27 20:20:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:20:31,204 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-27 20:20:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:20:31,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-27 20:20:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:20:31,206 INFO L225 Difference]: With dead ends: 16 [2020-10-27 20:20:31,206 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:20:31,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:20:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:20:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:20:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:20:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:20:31,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-27 20:20:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:20:31,208 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:20:31,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:20:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:20:31,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:20:31,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:20:31,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:20:31,437 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 20:20:31,437 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 20:20:31,437 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 20:20:31,437 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 20:20:31,438 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 20:20:31,438 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:20:31,438 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 20:20:31,438 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:20:31,438 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:20:31,439 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:20:31,439 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:20:31,439 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:20:31,439 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 20:20:31,439 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:20:31,439 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:20:31,440 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:20:31,440 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-27 20:20:31,440 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-10-27 20:20:31,440 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-27 20:20:31,440 INFO L270 CegarLoopResult]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (< 0 main_~y~0) (<= (+ main_~x~0 2) main_~y~0)) [2020-10-27 20:20:31,441 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 32) the Hoare annotation is: (< 0 main_~y~0) [2020-10-27 20:20:31,441 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-10-27 20:20:31,441 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-10-27 20:20:31,441 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-27 20:20:31,441 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-27 20:20:31,442 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-27 20:20:31,442 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 20:20:31,442 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-27 20:20:31,442 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-27 20:20:31,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:20:31 BoogieIcfgContainer [2020-10-27 20:20:31,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:20:31,463 INFO L168 Benchmark]: Toolchain (without parser) took 2848.45 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 129.5 MB in the beginning and 142.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:31,464 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 154.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:20:31,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.67 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 118.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:31,466 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 117.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:31,467 INFO L168 Benchmark]: RCFGBuilder took 500.47 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 104.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:20:31,468 INFO L168 Benchmark]: TraceAbstraction took 2036.17 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 103.7 MB in the beginning and 142.9 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:20:31,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 154.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.67 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 118.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.70 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 117.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 500.47 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 104.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2036.17 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 103.7 MB in the beginning and 142.9 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (x + 50 <= 0 || 0 < y) || x + 2 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 28 SDslu, 27 SDs, 0 SdLazy, 37 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 9 LocationsWithAnnotation, 15 PreInvPairs, 17 NumberOfFragments, 50 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 132 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...