/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/array1_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:24:00,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:24:00,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:24:00,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:24:00,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:24:00,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:24:00,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:24:00,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:24:00,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:24:00,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:24:00,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:24:00,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:24:00,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:24:00,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:24:00,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:24:00,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:24:00,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:24:00,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:24:00,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:24:00,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:24:00,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:24:00,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:24:00,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:24:00,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:24:00,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:24:00,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:24:00,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:24:00,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:24:00,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:24:00,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:24:00,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:24:00,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:24:00,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:24:00,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:24:00,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:24:00,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:24:00,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:24:00,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:24:00,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:24:00,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:24:00,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:24:00,871 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 10:24:00,914 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:24:00,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:24:00,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:24:00,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:24:00,917 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:24:00,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:24:00,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:24:00,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:24:00,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:24:00,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:24:00,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:24:00,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:24:00,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:24:00,920 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:24:00,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:24:00,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:24:00,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:24:00,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:24:00,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:24:00,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:24:00,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:24:00,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:24:00,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:24:00,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:24:00,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:24:00,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:24:00,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:24:00,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:24:00,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:24:00,923 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 10:24:01,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:24:01,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:24:01,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:24:01,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:24:01,262 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:24:01,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array1_pattern.c [2020-10-12 10:24:01,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07b209f6/66d576697fb941f09a769a542ee4b7ad/FLAG86d07ca51 [2020-10-12 10:24:01,832 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:24:01,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array1_pattern.c [2020-10-12 10:24:01,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07b209f6/66d576697fb941f09a769a542ee4b7ad/FLAG86d07ca51 [2020-10-12 10:24:02,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07b209f6/66d576697fb941f09a769a542ee4b7ad [2020-10-12 10:24:02,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:24:02,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:24:02,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:02,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:24:02,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:24:02,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259f9f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02, skipping insertion in model container [2020-10-12 10:24:02,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:24:02,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:24:02,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:02,453 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:24:02,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:02,606 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:24:02,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02 WrapperNode [2020-10-12 10:24:02,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:02,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:24:02,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:24:02,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:24:02,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (1/1) ... [2020-10-12 10:24:02,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:24:02,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:24:02,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:24:02,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:24:02,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (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 10:24:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:24:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:24:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:24:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:24:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:24:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:24:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:24:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:24:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:24:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:24:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-12 10:24:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:24:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:24:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:24:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:24:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:24:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:24:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:24:03,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:24:03,055 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:24:03,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:03 BoogieIcfgContainer [2020-10-12 10:24:03,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:24:03,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:24:03,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:24:03,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:24:03,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:24:02" (1/3) ... [2020-10-12 10:24:03,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6380bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:03, skipping insertion in model container [2020-10-12 10:24:03,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:02" (2/3) ... [2020-10-12 10:24:03,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6380bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:03, skipping insertion in model container [2020-10-12 10:24:03,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:03" (3/3) ... [2020-10-12 10:24:03,070 INFO L109 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2020-10-12 10:24:03,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:24:03,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:24:03,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:24:03,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:24:03,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:24:03,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:24:03,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:24:03,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:24:03,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:24:03,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:24:03,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:24:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-12 10:24:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 10:24:03,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:03,150 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] [2020-10-12 10:24:03,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1226662526, now seen corresponding path program 1 times [2020-10-12 10:24:03,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:03,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656088703] [2020-10-12 10:24:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:24:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:24:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 10:24:03,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:24:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 10:24:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:24:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:24:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:03,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:03,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:03,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:24:03,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:24:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:24:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:24:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 10:24:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:03,935 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 10:24:03,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656088703] [2020-10-12 10:24:03,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:24:03,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:24:03,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095358874] [2020-10-12 10:24:03,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:24:03,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:03,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:24:03,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:24:03,965 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2020-10-12 10:24:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:04,179 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2020-10-12 10:24:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:24:04,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-12 10:24:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:04,192 INFO L225 Difference]: With dead ends: 68 [2020-10-12 10:24:04,192 INFO L226 Difference]: Without dead ends: 27 [2020-10-12 10:24:04,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:24:04,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-12 10:24:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-12 10:24:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 10:24:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-12 10:24:04,247 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 20 [2020-10-12 10:24:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:04,247 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-12 10:24:04,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:24:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-12 10:24:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 10:24:04,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:04,250 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] [2020-10-12 10:24:04,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:24:04,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:04,252 INFO L82 PathProgramCache]: Analyzing trace with hash 328288985, now seen corresponding path program 1 times [2020-10-12 10:24:04,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:04,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996319370] [2020-10-12 10:24:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:04,275 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-12 10:24:04,276 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-12 10:24:04,276 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:24:04,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:24:04,300 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:24:04,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:24:04 BoogieIcfgContainer [2020-10-12 10:24:04,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:24:04,304 INFO L168 Benchmark]: Toolchain (without parser) took 2073.47 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 103.6 MB in the beginning and 96.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:04,305 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:24:04,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.83 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 183.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:04,307 INFO L168 Benchmark]: Boogie Preprocessor took 56.04 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:04,308 INFO L168 Benchmark]: RCFGBuilder took 395.93 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 163.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:04,309 INFO L168 Benchmark]: TraceAbstraction took 1239.28 ms. Allocated memory is still 204.5 MB. Free memory was 163.5 MB in the beginning and 96.9 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:04,313 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 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.83 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 183.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.04 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.93 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 163.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1239.28 ms. Allocated memory is still 204.5 MB. Free memory was 163.5 MB in the beginning and 96.9 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 28]: 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: [L32] signed long long ARR_SIZE ; [L36] ARR_SIZE = __VERIFIER_nondet_short() [L37] CALL assume_abort_if_not(ARR_SIZE > 0) [L26] COND FALSE !(!cond) [L37] RET assume_abort_if_not(ARR_SIZE > 0) [L39] int array1[ARR_SIZE] ; [L40] int array2[ARR_SIZE] ; [L41] int count = 0, num = -1 ; [L42] int temp ; [L43] short index ; [L44] signed long long sum = 0 ; [L46] count=0 [L46] COND FALSE !(count=0 && index < ARR_SIZE) [L26] COND FALSE !(!cond) [L56] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L58] array1[index] = num*(num*index) [L59] array2[ARR_SIZE-1-index] = num * index [L61] temp = __VERIFIER_nondet_int() [L62] COND TRUE temp == 0 [L65] count=0 [L65] COND TRUE count