/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:58:01,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:58:01,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:58:01,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:58:01,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:58:01,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:58:01,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:58:01,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:58:01,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:58:01,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:58:01,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:58:01,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:58:01,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:58:01,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:58:01,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:58:01,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:58:01,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:58:01,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:58:01,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:58:01,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:58:01,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:58:01,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:58:01,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:58:01,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:58:01,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:58:01,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:58:01,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:58:01,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:58:01,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:58:01,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:58:01,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:58:01,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:58:01,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:58:01,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:58:01,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:58:01,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:58:01,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:58:01,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:58:01,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:58:01,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:58:01,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:58:01,653 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 [2020-08-22 03:58:01,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:58:01,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:58:01,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:58:01,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:58:01,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:58:01,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:58:01,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:58:01,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:58:01,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:58:01,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:58:01,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:58:01,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:58:01,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:58:01,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:58:01,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:58:01,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:58:01,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:58:01,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:58:01,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:58:01,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:58:01,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:58:01,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:58:01,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:58:01,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:58:01,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:58:01,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:58:01,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:58:01,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:58:01,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:58:01,683 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:58:01,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:58:02,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:58:02,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:58:02,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:58:02,018 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:58:02,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-22 03:58:02,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a29c0519/b7077f1f4cfa452cbba2c37360feb7f8/FLAG85fa311f6 [2020-08-22 03:58:02,586 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:58:02,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-22 03:58:02,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a29c0519/b7077f1f4cfa452cbba2c37360feb7f8/FLAG85fa311f6 [2020-08-22 03:58:02,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a29c0519/b7077f1f4cfa452cbba2c37360feb7f8 [2020-08-22 03:58:02,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:58:02,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:58:02,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:58:02,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:58:02,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:58:02,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:58:02" (1/1) ... [2020-08-22 03:58:02,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:02, skipping insertion in model container [2020-08-22 03:58:02,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:58:02" (1/1) ... [2020-08-22 03:58:02,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:58:03,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:58:03,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:58:03,261 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:58:03,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:58:03,293 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:58:03,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03 WrapperNode [2020-08-22 03:58:03,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:58:03,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:58:03,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:58:03,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:58:03,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (1/1) ... [2020-08-22 03:58:03,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:58:03,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:58:03,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:58:03,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:58:03,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (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 [2020-08-22 03:58:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:58:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:58:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:58:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:58:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:58:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:58:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:58:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:58:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:58:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:58:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:58:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:58:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:58:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:58:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:58:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:58:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:58:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:58:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:58:03,835 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:58:03,835 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 03:58:03,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:58:03 BoogieIcfgContainer [2020-08-22 03:58:03,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:58:03,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:58:03,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:58:03,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:58:03,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:58:02" (1/3) ... [2020-08-22 03:58:03,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c904b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:58:03, skipping insertion in model container [2020-08-22 03:58:03,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:58:03" (2/3) ... [2020-08-22 03:58:03,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c904b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:58:03, skipping insertion in model container [2020-08-22 03:58:03,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:58:03" (3/3) ... [2020-08-22 03:58:03,848 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-08-22 03:58:03,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:58:03,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:58:03,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:58:03,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:58:03,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:58:03,902 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:58:03,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:58:03,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:58:03,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:58:03,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:58:03,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:58:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 03:58:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 03:58:03,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:58:03,927 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] [2020-08-22 03:58:03,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:58:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:58:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 03:58:03,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:58:03,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816560309] [2020-08-22 03:58:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:58:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:58:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:58:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:58:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:58:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:58:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:58:04,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816560309] [2020-08-22 03:58:04,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:58:04,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:58:04,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151026699] [2020-08-22 03:58:04,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:58:04,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:58:04,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:58:04,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:58:04,188 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 03:58:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:58:04,310 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 03:58:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:58:04,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 03:58:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:58:04,321 INFO L225 Difference]: With dead ends: 58 [2020-08-22 03:58:04,322 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 03:58:04,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:58:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 03:58:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 03:58:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 03:58:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 03:58:04,364 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 03:58:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:58:04,365 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 03:58:04,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:58:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 03:58:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 03:58:04,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:58:04,366 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] [2020-08-22 03:58:04,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:58:04,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:58:04,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:58:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 03:58:04,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:58:04,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154914980] [2020-08-22 03:58:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:58:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:58:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:58:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:58:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:58:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:58:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:58:04,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154914980] [2020-08-22 03:58:04,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:58:04,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:58:04,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643104044] [2020-08-22 03:58:04,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:58:04,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:58:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:58:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:58:04,501 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-08-22 03:58:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:58:04,626 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-22 03:58:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:58:04,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-22 03:58:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:58:04,630 INFO L225 Difference]: With dead ends: 51 [2020-08-22 03:58:04,630 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 03:58:04,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:58:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 03:58:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-08-22 03:58:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 03:58:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-22 03:58:04,645 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-08-22 03:58:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:58:04,646 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-22 03:58:04,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:58:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-22 03:58:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 03:58:04,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:58:04,647 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] [2020-08-22 03:58:04,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:58:04,648 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:58:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:58:04,648 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-08-22 03:58:04,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:58:04,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114795754] [2020-08-22 03:58:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:58:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:58:04,725 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:58:04,725 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:58:04,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:58:04,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:58:04 BoogieIcfgContainer [2020-08-22 03:58:04,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:58:04,752 INFO L168 Benchmark]: Toolchain (without parser) took 1785.94 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 103.5 MB in the beginning and 107.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:58:04,753 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 143.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:58:04,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.18 ms. Allocated memory is still 143.7 MB. Free memory was 103.3 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:58:04,755 INFO L168 Benchmark]: Boogie Preprocessor took 134.97 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 92.8 MB in the beginning and 180.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:58:04,756 INFO L168 Benchmark]: RCFGBuilder took 410.20 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 163.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-08-22 03:58:04,757 INFO L168 Benchmark]: TraceAbstraction took 907.50 ms. Allocated memory is still 202.9 MB. Free memory was 163.2 MB in the beginning and 107.6 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:58:04,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 143.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.18 ms. Allocated memory is still 143.7 MB. Free memory was 103.3 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.97 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 92.8 MB in the beginning and 180.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.20 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 163.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 907.50 ms. Allocated memory is still 202.9 MB. Free memory was 163.2 MB in the beginning and 107.6 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i