/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-cav19/array_tiling_poly6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:15:18,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:15:18,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:15:18,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:15:18,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:15:18,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:15:18,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:15:18,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:15:18,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:15:18,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:15:18,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:15:18,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:15:18,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:15:18,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:15:18,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:15:18,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:15:18,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:15:18,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:15:18,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:15:18,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:15:18,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:15:18,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:15:18,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:15:18,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:15:18,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:15:18,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:15:18,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:15:18,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:15:18,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:15:18,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:15:18,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:15:18,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:15:18,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:15:18,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:15:18,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:15:18,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:15:18,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:15:18,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:15:18,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:15:18,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:15:18,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:15:18,806 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 [2020-10-29 03:15:18,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:15:18,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:15:18,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:15:18,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:15:18,835 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:15:18,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:15:18,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:15:18,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:15:18,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:15:18,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:15:18,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:15:18,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:15:18,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:15:18,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:15:18,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:15:18,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:15:18,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:15:18,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:15:18,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:15:18,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:15:18,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:15:18,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:15:18,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:15:18,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:15:18,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:15:18,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:15:18,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:15:18,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:15:18,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:15:18,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:15:19,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:15:19,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:15:19,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:15:19,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:15:19,265 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:15:19,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tiling_poly6.c [2020-10-29 03:15:19,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ced49cfd/73c3379454b14ea5be754a39f9e2c424/FLAGd8c61cd66 [2020-10-29 03:15:20,031 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:15:20,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_tiling_poly6.c [2020-10-29 03:15:20,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ced49cfd/73c3379454b14ea5be754a39f9e2c424/FLAGd8c61cd66 [2020-10-29 03:15:20,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ced49cfd/73c3379454b14ea5be754a39f9e2c424 [2020-10-29 03:15:20,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:15:20,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:15:20,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:15:20,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:15:20,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf1f6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:15:20,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:15:20,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,618 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:15:20,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,655 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:15:20,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20 WrapperNode [2020-10-29 03:15:20,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:15:20,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:15:20,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:15:20,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:15:20,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:15:20,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (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 [2020-10-29 03:15:20,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:15:20,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:15:20,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:15:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:15:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:15:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:15:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:15:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:15:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:15:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:15:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:15:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:15:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:15:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:15:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:15:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:15:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:15:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:15:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:15:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:15:21,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:15:21,328 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:15:21,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:21 BoogieIcfgContainer [2020-10-29 03:15:21,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:15:21,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:15:21,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:15:21,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:15:21,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:15:20" (1/3) ... [2020-10-29 03:15:21,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148b3d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (2/3) ... [2020-10-29 03:15:21,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148b3d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:21" (3/3) ... [2020-10-29 03:15:21,342 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tiling_poly6.c [2020-10-29 03:15:21,354 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:15:21,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:15:21,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:15:21,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:15:21,417 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:15:21,418 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:15:21,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:15:21,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:15:21,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:15:21,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:15:21,419 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:15:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:15:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:15:21,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:21,449 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, 1] [2020-10-29 03:15:21,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:21,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2128351604, now seen corresponding path program 1 times [2020-10-29 03:15:21,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:21,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605028200] [2020-10-29 03:15:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:15:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-29 03:15:22,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:15:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:22,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:15:22,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:22,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:22,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:22,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:22,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605028200] [2020-10-29 03:15:22,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:22,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:15:22,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864842514] [2020-10-29 03:15:22,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:22,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:22,707 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-29 03:15:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:22,957 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2020-10-29 03:15:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:15:22,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 03:15:22,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:22,968 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:15:22,968 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 03:15:22,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:15:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 03:15:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-10-29 03:15:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:15:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-29 03:15:23,019 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-10-29 03:15:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:23,020 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-29 03:15:23,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-29 03:15:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:15:23,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:23,022 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, 1, 1, 1, 1, 1] [2020-10-29 03:15:23,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:15:23,022 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash -110947914, now seen corresponding path program 1 times [2020-10-29 03:15:23,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:23,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305327828] [2020-10-29 03:15:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:23,043 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-29 03:15:23,043 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-29 03:15:23,043 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:15:23,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:15:23,067 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-29 03:15:23,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:15:23 BoogieIcfgContainer [2020-10-29 03:15:23,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:15:23,075 INFO L168 Benchmark]: Toolchain (without parser) took 2669.77 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 85.7 MB in the end (delta: 52.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2020-10-29 03:15:23,076 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 146.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:15:23,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.68 ms. Allocated memory is still 163.6 MB. Free memory was 137.6 MB in the beginning and 128.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:15:23,080 INFO L168 Benchmark]: Boogie Preprocessor took 37.35 ms. Allocated memory is still 163.6 MB. Free memory was 128.0 MB in the beginning and 126.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 03:15:23,088 INFO L168 Benchmark]: RCFGBuilder took 635.86 ms. Allocated memory is still 163.6 MB. Free memory was 126.5 MB in the beginning and 111.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 03:15:23,090 INFO L168 Benchmark]: TraceAbstraction took 1736.90 ms. Allocated memory is still 163.6 MB. Free memory was 110.8 MB in the beginning and 85.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-10-29 03:15:23,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 146.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.68 ms. Allocated memory is still 163.6 MB. Free memory was 137.6 MB in the beginning and 128.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.35 ms. Allocated memory is still 163.6 MB. Free memory was 128.0 MB in the beginning and 126.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.86 ms. Allocated memory is still 163.6 MB. Free memory was 126.5 MB in the beginning and 111.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1736.90 ms. Allocated memory is still 163.6 MB. Free memory was 110.8 MB in the beginning and 85.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: 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: [L12] int S=__VERIFIER_nondet_int(); [L13] CALL assume_abort_if_not(S>1) [L6] COND FALSE !(!cond) [L13] RET assume_abort_if_not(S>1) [L14] int i; [L15] int a[S]; [L17] i=0 [L17] COND TRUE i