/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/array-patterns/array1_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:27:16,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:27:16,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:27:16,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:27:16,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:27:16,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:27:16,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:27:16,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:27:16,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:27:16,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:27:16,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:27:16,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:27:16,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:27:16,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:27:16,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:27:16,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:27:16,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:27:16,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:27:16,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:27:16,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:27:16,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:27:16,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:27:16,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:27:16,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:27:16,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:27:16,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:27:16,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:27:16,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:27:16,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:27:16,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:27:16,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:27:16,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:27:16,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:27:16,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:27:16,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:27:16,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:27:16,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:27:16,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:27:16,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:27:16,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:27:16,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:27:16,667 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 09:27:16,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:27:16,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:27:16,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:27:16,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:27:16,696 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:27:16,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:27:16,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:27:16,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:27:16,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:27:16,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:27:16,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:27:16,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:27:16,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:27:16,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:27:16,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:27:16,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:27:16,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:27:16,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:27:16,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:27:16,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:27:16,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:27:16,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:16,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:27:16,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:27:16,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:27:16,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:27:16,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:27:16,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:27:16,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:27:16,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:27:17,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:27:17,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:27:17,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:27:17,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:27:17,111 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:27:17,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array1_pattern.c [2020-10-28 09:27:17,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77f00b106/0f26b8b7658a4ed6a5dfc0f345806058/FLAGdf372f716 [2020-10-28 09:27:17,893 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:27:17,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array1_pattern.c [2020-10-28 09:27:17,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77f00b106/0f26b8b7658a4ed6a5dfc0f345806058/FLAGdf372f716 [2020-10-28 09:27:18,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77f00b106/0f26b8b7658a4ed6a5dfc0f345806058 [2020-10-28 09:27:18,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:27:18,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:27:18,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:18,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:27:18,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:27:18,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ecd8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18, skipping insertion in model container [2020-10-28 09:27:18,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:27:18,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:27:18,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:18,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:27:18,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:18,510 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:27:18,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18 WrapperNode [2020-10-28 09:27:18,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:18,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:27:18,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:27:18,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:27:18,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (1/1) ... [2020-10-28 09:27:18,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:27:18,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:27:18,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:27:18,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:27:18,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (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 09:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:27:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:27:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:27:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:27:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:27:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:27:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:27:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:27:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:27:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:27:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:27:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-28 09:27:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:27:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:27:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:27:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:27:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:27:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:27:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:27:19,088 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:27:19,088 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:27:19,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:19 BoogieIcfgContainer [2020-10-28 09:27:19,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:27:19,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:27:19,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:27:19,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:27:19,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:27:18" (1/3) ... [2020-10-28 09:27:19,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b24b812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:19, skipping insertion in model container [2020-10-28 09:27:19,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:18" (2/3) ... [2020-10-28 09:27:19,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b24b812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:19, skipping insertion in model container [2020-10-28 09:27:19,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:19" (3/3) ... [2020-10-28 09:27:19,103 INFO L111 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2020-10-28 09:27:19,132 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:27:19,137 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:27:19,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:27:19,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:27:19,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:27:19,183 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:27:19,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:27:19,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:27:19,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:27:19,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:27:19,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:27:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 09:27:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 09:27:19,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:19,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:19,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1471950301, now seen corresponding path program 1 times [2020-10-28 09:27:19,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:19,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125611651] [2020-10-28 09:27:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:19,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:19,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:27:19,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-28 09:27:19,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:19,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:27:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:27:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 09:27:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:20,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:20,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:27:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:20,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:20,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:20,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:27:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:20,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:27:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:20,080 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 09:27:20,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125611651] [2020-10-28 09:27:20,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:20,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:27:20,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403659611] [2020-10-28 09:27:20,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:27:20,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:27:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:20,115 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 09:27:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:20,300 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-28 09:27:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:27:20,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-28 09:27:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:20,311 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:27:20,312 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 09:27:20,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 09:27:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 09:27:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:27:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-28 09:27:20,368 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-10-28 09:27:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:20,369 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-28 09:27:20,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:27:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-28 09:27:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:27:20,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:20,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:20,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:27:20,372 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:20,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:20,374 INFO L82 PathProgramCache]: Analyzing trace with hash 657650866, now seen corresponding path program 1 times [2020-10-28 09:27:20,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:20,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455737213] [2020-10-28 09:27:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:20,395 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:27:20,396 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:27:20,396 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:27:20,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:27:20,415 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:27:20,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:27:20 BoogieIcfgContainer [2020-10-28 09:27:20,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:27:20,419 INFO L168 Benchmark]: Toolchain (without parser) took 2169.61 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 75.9 MB in the end (delta: 58.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:20,419 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 158.3 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:27:20,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.86 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 123.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:20,421 INFO L168 Benchmark]: Boogie Preprocessor took 41.57 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:20,422 INFO L168 Benchmark]: RCFGBuilder took 538.28 ms. Allocated memory is still 158.3 MB. Free memory was 121.4 MB in the beginning and 105.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:20,423 INFO L168 Benchmark]: TraceAbstraction took 1321.35 ms. Allocated memory is still 158.3 MB. Free memory was 104.7 MB in the beginning and 75.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:20,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 158.3 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.86 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 123.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.57 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 538.28 ms. Allocated memory is still 158.3 MB. Free memory was 121.4 MB in the beginning and 105.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1321.35 ms. Allocated memory is still 158.3 MB. Free memory was 104.7 MB in the beginning and 75.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34] signed long long ARR_SIZE ; [L38] ARR_SIZE = __VERIFIER_nondet_short() [L39] CALL assume_abort_if_not(ARR_SIZE > 0) [L28] COND FALSE !(!cond) [L39] RET assume_abort_if_not(ARR_SIZE > 0) [L41] int array1[ARR_SIZE] ; [L42] int array2[ARR_SIZE] ; [L43] int count = 0, num = -1 ; [L44] int temp ; [L45] short index ; [L46] signed long long sum = 0 ; [L48] count=0 [L48] COND FALSE !(count=0 && index < ARR_SIZE) [L28] COND FALSE !(!cond) [L58] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L60] array1[index] = num*(num*index) [L61] array2[ARR_SIZE-1-index] = num * index [L63] temp = __VERIFIER_nondet_int() [L64] COND TRUE temp == 0 [L67] count=0 [L67] COND FALSE !(count