/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:01:27,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:01:27,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:01:27,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:01:27,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:01:27,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:01:27,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:01:27,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:01:27,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:01:27,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:01:27,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:01:27,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:01:27,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:01:27,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:01:27,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:01:27,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:01:27,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:01:27,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:01:28,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:01:28,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:01:28,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:01:28,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:01:28,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:01:28,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:01:28,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:01:28,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:01:28,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:01:28,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:01:28,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:01:28,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:01:28,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:01:28,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:01:28,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:01:28,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:01:28,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:01:28,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:01:28,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:01:28,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:01:28,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:01:28,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:01:28,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:01:28,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:01:28,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:01:28,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:01:28,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:01:28,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:01:28,083 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:01:28,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:01:28,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:01:28,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:01:28,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:01:28,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:01:28,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:01:28,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:01:28,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:01:28,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:01:28,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:01:28,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:01:28,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:01:28,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:01:28,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:01:28,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:01:28,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:01:28,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:01:28,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:01:28,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:01:28,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:01:28,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:01:28,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:01:28,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:01:28,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:01:28,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:01:28,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:01:28,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:01:28,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:01:28,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:01:28,524 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:01:28,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-10-28 15:01:28,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c18c83d4b/e29b7cb63f0e4dd4bbc170b87d608d87/FLAG4c3342699 [2020-10-28 15:01:29,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:01:29,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i [2020-10-28 15:01:29,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c18c83d4b/e29b7cb63f0e4dd4bbc170b87d608d87/FLAG4c3342699 [2020-10-28 15:01:29,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c18c83d4b/e29b7cb63f0e4dd4bbc170b87d608d87 [2020-10-28 15:01:29,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:01:29,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:01:29,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:01:29,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:01:29,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:01:29,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a624960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29, skipping insertion in model container [2020-10-28 15:01:29,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:01:29,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:01:29,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:01:29,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:01:29,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:01:29,944 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:01:29,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29 WrapperNode [2020-10-28 15:01:29,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:01:29,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:01:29,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:01:29,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:01:29,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... [2020-10-28 15:01:29,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:01:29,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:01:29,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:01:29,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:01:29,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:01:30,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:01:30,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:01:30,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:01:30,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:01:30,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:01:30,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:01:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:01:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:01:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:01:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:01:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:01:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:01:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:01:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:01:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:01:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:01:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:01:30,377 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:01:30,378 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 15:01:30,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:01:30 BoogieIcfgContainer [2020-10-28 15:01:30,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:01:30,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:01:30,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:01:30,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:01:30,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:01:29" (1/3) ... [2020-10-28 15:01:30,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59768ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:01:30, skipping insertion in model container [2020-10-28 15:01:30,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:29" (2/3) ... [2020-10-28 15:01:30,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59768ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:01:30, skipping insertion in model container [2020-10-28 15:01:30,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:01:30" (3/3) ... [2020-10-28 15:01:30,391 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-10-28 15:01:30,409 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:01:30,416 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:01:30,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:01:30,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:01:30,529 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:01:30,529 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:01:30,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:01:30,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:01:30,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:01:30,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:01:30,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:01:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-28 15:01:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 15:01:30,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:30,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:30,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:30,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1417535483, now seen corresponding path program 1 times [2020-10-28 15:01:30,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:30,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148831500] [2020-10-28 15:01:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:31,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:31,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 15:01:31,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:31,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-28 15:01:31,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:31,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:01:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:01:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:01:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:31,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:31,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:31,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:31,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:01:31,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:31,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:01:31,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148831500] [2020-10-28 15:01:31,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:31,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:01:31,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694454617] [2020-10-28 15:01:31,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:01:31,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:31,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:01:31,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:01:31,371 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-28 15:01:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:31,778 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2020-10-28 15:01:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:31,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-28 15:01:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:31,788 INFO L225 Difference]: With dead ends: 51 [2020-10-28 15:01:31,789 INFO L226 Difference]: Without dead ends: 24 [2020-10-28 15:01:31,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:01:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-28 15:01:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-28 15:01:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 15:01:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-28 15:01:31,841 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2020-10-28 15:01:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:31,842 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-28 15:01:31,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:01:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-28 15:01:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 15:01:31,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:31,844 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:31,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:01:31,844 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash 878769720, now seen corresponding path program 1 times [2020-10-28 15:01:31,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:31,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554869415] [2020-10-28 15:01:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:32,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:01:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 15:01:32,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:32,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:01:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:01:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:01:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:32,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:32,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:32,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:01:32,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:32,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 15:01:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:32,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:01:32,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:32,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:01:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:01:32,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554869415] [2020-10-28 15:01:32,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:32,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:01:32,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852571277] [2020-10-28 15:01:32,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:01:32,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:32,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:01:32,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:01:32,149 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 6 states. [2020-10-28 15:01:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:32,357 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-10-28 15:01:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:01:32,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-28 15:01:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:32,358 INFO L225 Difference]: With dead ends: 24 [2020-10-28 15:01:32,358 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:01:32,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:01:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:01:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:01:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:01:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:01:32,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-28 15:01:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:32,361 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:01:32,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:01:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:01:32,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:01:32,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:01:32,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:01:32,529 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 15:01:32,529 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 15:01:32,529 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:01:32,529 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 15:01:32,530 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 15:01:32,530 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:32,530 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-28 15:01:32,530 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:32,530 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:32,531 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:01:32,531 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:01:32,531 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:32,531 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-28 15:01:32,531 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:32,531 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:32,531 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:32,532 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~nlen~0) (<= 0 main_~i~0)) [2020-10-28 15:01:32,532 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~nlen~0) (<= 0 main_~i~0)) [2020-10-28 15:01:32,532 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 32) no Hoare annotation was computed. [2020-10-28 15:01:32,532 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 34) no Hoare annotation was computed. [2020-10-28 15:01:32,533 INFO L270 CegarLoopResult]: At program point L27-3(lines 27 32) the Hoare annotation is: (<= 0 main_~i~0) [2020-10-28 15:01:32,533 INFO L274 CegarLoopResult]: For program point L27-4(lines 27 32) no Hoare annotation was computed. [2020-10-28 15:01:32,533 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 34) no Hoare annotation was computed. [2020-10-28 15:01:32,533 INFO L274 CegarLoopResult]: For program point L30(lines 28 31) no Hoare annotation was computed. [2020-10-28 15:01:32,533 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 34) the Hoare annotation is: true [2020-10-28 15:01:32,533 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 31) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~nlen~0) (<= 0 main_~i~0)) [2020-10-28 15:01:32,534 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:01:32,534 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-28 15:01:32,534 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:01:32,534 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:01:32,534 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-28 15:01:32,534 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-28 15:01:32,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:01:32 BoogieIcfgContainer [2020-10-28 15:01:32,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:01:32,555 INFO L168 Benchmark]: Toolchain (without parser) took 2887.15 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 108.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:32,556 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.7 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:01:32,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.53 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:32,558 INFO L168 Benchmark]: Boogie Preprocessor took 41.74 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:32,559 INFO L168 Benchmark]: RCFGBuilder took 391.30 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 134.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:32,560 INFO L168 Benchmark]: TraceAbstraction took 2169.96 ms. Allocated memory is still 153.1 MB. Free memory was 134.3 MB in the beginning and 108.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:32,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.7 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.53 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.74 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 391.30 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 134.8 MB in the end (delta: -18.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2169.96 ms. Allocated memory is still 153.1 MB. Free memory was 134.3 MB in the beginning and 108.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: i + 1 <= nlen && 0 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 40 SDslu, 46 SDs, 0 SdLazy, 95 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 63 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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...