/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/array-patterns/array8_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:24:15,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:24:15,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:24:15,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:24:15,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:24:15,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:24:15,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:24:15,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:24:15,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:24:15,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:24:15,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:24:15,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:24:15,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:24:15,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:24:15,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:24:15,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:24:15,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:24:15,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:24:15,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:24:15,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:24:15,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:24:15,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:24:15,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:24:15,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:24:15,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:24:15,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:24:15,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:24:15,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:24:15,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:24:15,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:24:15,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:24:15,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:24:15,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:24:15,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:24:15,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:24:15,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:24:15,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:24:15,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:24:15,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:24:15,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:24:15,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:24:15,911 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 [2020-10-12 10:24:15,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:24:15,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:24:15,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:24:15,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:24:15,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:24:15,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:24:15,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:24:15,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:24:15,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:24:15,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:24:15,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:24:15,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:24:15,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:24:15,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:24:15,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:24:15,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:24:15,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:24:15,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:24:15,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:24:15,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:24:15,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:24:15,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:24:15,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:24:15,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:24:15,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:24:15,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:24:15,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:24:15,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:24:15,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:24:15,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:24:16,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:24:16,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:24:16,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:24:16,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:24:16,300 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:24:16,301 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array8_pattern.c [2020-10-12 10:24:16,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f646d0376/1fdb965120b840adb661fc35b0c5c90b/FLAG88c6cdaab [2020-10-12 10:24:16,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:24:16,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array8_pattern.c [2020-10-12 10:24:16,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f646d0376/1fdb965120b840adb661fc35b0c5c90b/FLAG88c6cdaab [2020-10-12 10:24:17,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f646d0376/1fdb965120b840adb661fc35b0c5c90b [2020-10-12 10:24:17,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:24:17,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:24:17,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:17,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:24:17,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:24:17,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba03fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17, skipping insertion in model container [2020-10-12 10:24:17,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:24:17,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:24:17,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:17,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:24:17,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:17,588 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:24:17,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17 WrapperNode [2020-10-12 10:24:17,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:17,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:24:17,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:24:17,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:24:17,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:24:17,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:24:17,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:24:17,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:24:17,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (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 [2020-10-12 10:24:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:24:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:24:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:24:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:24:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:24:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:24:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:24:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:24:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:24:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:24:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-12 10:24:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:24:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:24:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:24:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:24:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:24:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:24:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:24:18,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:24:18,003 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:24:18,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:18 BoogieIcfgContainer [2020-10-12 10:24:18,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:24:18,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:24:18,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:24:18,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:24:18,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:24:17" (1/3) ... [2020-10-12 10:24:18,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5c437b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:18, skipping insertion in model container [2020-10-12 10:24:18,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17" (2/3) ... [2020-10-12 10:24:18,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5c437b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:18, skipping insertion in model container [2020-10-12 10:24:18,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:18" (3/3) ... [2020-10-12 10:24:18,016 INFO L109 eAbstractionObserver]: Analyzing ICFG array8_pattern.c [2020-10-12 10:24:18,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:24:18,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:24:18,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:24:18,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:24:18,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:24:18,086 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:24:18,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:24:18,086 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:24:18,086 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:24:18,086 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:24:18,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:24:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-12 10:24:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:24:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:18,115 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] [2020-10-12 10:24:18,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:18,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:18,123 INFO L82 PathProgramCache]: Analyzing trace with hash -945511344, now seen corresponding path program 1 times [2020-10-12 10:24:18,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:18,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120108772] [2020-10-12 10:24:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:18,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:24:18,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:24:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 10:24:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 10:24:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:24:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:24:18,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:18,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:24:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:18,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:18,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:18,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:24:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:24:18,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:24:18,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120108772] [2020-10-12 10:24:18,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:24:18,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 10:24:18,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870259049] [2020-10-12 10:24:18,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 10:24:18,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:18,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 10:24:18,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:24:18,612 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-12 10:24:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:18,726 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-10-12 10:24:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 10:24:18,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-12 10:24:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:18,738 INFO L225 Difference]: With dead ends: 65 [2020-10-12 10:24:18,739 INFO L226 Difference]: Without dead ends: 29 [2020-10-12 10:24:18,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 10:24:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-12 10:24:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-12 10:24:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 10:24:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 10:24:18,791 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2020-10-12 10:24:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:18,791 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 10:24:18,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 10:24:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 10:24:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:24:18,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:18,794 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, 1, 1] [2020-10-12 10:24:18,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:24:18,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:18,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1477566463, now seen corresponding path program 1 times [2020-10-12 10:24:18,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:18,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333722578] [2020-10-12 10:24:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:18,838 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-12 10:24:18,840 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-12 10:24:18,840 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:24:18,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:24:18,879 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:24:18,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:24:18 BoogieIcfgContainer [2020-10-12 10:24:18,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:24:18,884 INFO L168 Benchmark]: Toolchain (without parser) took 1650.77 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.6 MB in the beginning and 114.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:18,887 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:24:18,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.18 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 180.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:18,890 INFO L168 Benchmark]: Boogie Preprocessor took 38.02 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:18,891 INFO L168 Benchmark]: RCFGBuilder took 378.34 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 160.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:18,893 INFO L168 Benchmark]: TraceAbstraction took 870.98 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 114.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:18,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.18 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 180.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.02 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.34 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 160.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 870.98 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 114.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 31]: 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: [L35] signed long long ARR_SIZE ; [L39] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L40] CALL assume_abort_if_not(ARR_SIZE > 0) [L29] COND FALSE !(!cond) [L40] RET assume_abort_if_not(ARR_SIZE > 0) [L42] int array1[ARR_SIZE] ; [L43] int array2[ARR_SIZE] ; [L44] int count = 0, num = -1 ; [L45] signed long long sum = 0 ; [L46] int temp ; [L47] short index ; [L49] count=0 [L49] COND FALSE !(count=0 && index < ARR_SIZE) [L29] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L63] array1[index] = num * (num * count) [L64] EXPR (index % 2 == 0) ? array2[index] : (num * count) [L64] EXPR array2[index] [L64] EXPR (index % 2 == 0) ? array2[index] : (num * count) [L64] array2[index] = (index % 2 == 0) ? array2[index] : (num * count) [L66] temp = __VERIFIER_nondet_int() [L67] COND TRUE temp == 0 [L70] count=0 [L70] COND FALSE !(count