/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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:57:47,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:57:47,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:57:47,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:57:47,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:57:47,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:57:47,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:57:47,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:57:47,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:57:47,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:57:47,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:57:47,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:57:47,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:57:47,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:57:47,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:57:47,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:57:47,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:57:47,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:57:47,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:57:47,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:57:47,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:57:47,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:57:47,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:57:47,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:57:47,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:57:47,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:57:47,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:57:47,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:57:47,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:57:47,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:57:47,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:57:47,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:57:47,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:57:47,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:57:47,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:57:47,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:57:47,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:57:47,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:57:47,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:57:47,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:57:47,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:57:47,595 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 03:57:47,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:57:47,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:57:47,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:57:47,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:57:47,645 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:57:47,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:57:47,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:57:47,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:57:47,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:57:47,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:57:47,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:57:47,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:57:47,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:57:47,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:57:47,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:57:47,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:57:47,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:57:47,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:57:47,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:57:47,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:57:47,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:57:47,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:57:47,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:57:47,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:57:47,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:57:47,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:57:47,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:57:47,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:57:47,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:57:47,649 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 03:57:47,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:57:47,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:57:48,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:57:48,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:57:48,007 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:57:48,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-08-22 03:57:48,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22b4f99f7/8652da2594ea44e183cc1fef5073c13d/FLAG31901f4ed [2020-08-22 03:57:48,547 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:57:48,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp4f.c [2020-08-22 03:57:48,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22b4f99f7/8652da2594ea44e183cc1fef5073c13d/FLAG31901f4ed [2020-08-22 03:57:48,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22b4f99f7/8652da2594ea44e183cc1fef5073c13d [2020-08-22 03:57:48,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:57:48,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:57:48,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:57:48,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:57:48,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:57:48,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:57:48" (1/1) ... [2020-08-22 03:57:48,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526e8c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:48, skipping insertion in model container [2020-08-22 03:57:48,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:57:48" (1/1) ... [2020-08-22 03:57:48,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:57:48,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:57:49,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:57:49,131 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:57:49,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:57:49,168 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:57:49,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49 WrapperNode [2020-08-22 03:57:49,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:57:49,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:57:49,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:57:49,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:57:49,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (1/1) ... [2020-08-22 03:57:49,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:57:49,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:57:49,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:57:49,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:57:49,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (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 03:57:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:57:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:57:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:57:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:57:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:57:49,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:57:49,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:57:49,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:57:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:57:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:57:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:57:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:57:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:57:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:57:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:57:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:57:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:57:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:57:49,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:57:49,640 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 03:57:49,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:57:49 BoogieIcfgContainer [2020-08-22 03:57:49,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:57:49,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:57:49,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:57:49,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:57:49,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:57:48" (1/3) ... [2020-08-22 03:57:49,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576f8220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:57:49, skipping insertion in model container [2020-08-22 03:57:49,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:49" (2/3) ... [2020-08-22 03:57:49,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576f8220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:57:49, skipping insertion in model container [2020-08-22 03:57:49,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:57:49" (3/3) ... [2020-08-22 03:57:49,668 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-08-22 03:57:49,695 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:57:49,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:57:49,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:57:49,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:57:49,761 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:57:49,761 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:57:49,761 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:57:49,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:57:49,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:57:49,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:57:49,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:57:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 03:57:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 03:57:49,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:57:49,789 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] [2020-08-22 03:57:49,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:57:49,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:57:49,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 03:57:49,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:57:49,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283926565] [2020-08-22 03:57:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:57:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:57:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:49,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:57:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:50,007 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 03:57:50,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283926565] [2020-08-22 03:57:50,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:57:50,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:57:50,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123719776] [2020-08-22 03:57:50,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:57:50,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:57:50,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:57:50,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:57:50,033 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 03:57:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:57:50,165 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 03:57:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:57:50,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 03:57:50,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:57:50,177 INFO L225 Difference]: With dead ends: 64 [2020-08-22 03:57:50,177 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 03:57:50,181 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 03:57:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 03:57:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 03:57:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 03:57:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 03:57:50,219 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 03:57:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:57:50,219 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 03:57:50,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:57:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 03:57:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 03:57:50,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:57:50,221 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] [2020-08-22 03:57:50,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:57:50,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:57:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:57:50,222 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 03:57:50,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:57:50,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874762818] [2020-08-22 03:57:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:57:50,252 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 03:57:50,252 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 03:57:50,252 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:57:50,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:57:50,271 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 03:57:50,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:57:50 BoogieIcfgContainer [2020-08-22 03:57:50,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:57:50,274 INFO L168 Benchmark]: Toolchain (without parser) took 1353.04 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 101.8 MB in the beginning and 128.0 MB in the end (delta: -26.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:50,275 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 03:57:50,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.34 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 91.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:50,277 INFO L168 Benchmark]: Boogie Preprocessor took 132.74 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.3 MB in the beginning and 178.2 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:50,278 INFO L168 Benchmark]: RCFGBuilder took 346.55 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 160.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:50,279 INFO L168 Benchmark]: TraceAbstraction took 620.86 ms. Allocated memory is still 200.3 MB. Free memory was 159.8 MB in the beginning and 128.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:50,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.34 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 91.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.74 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.3 MB in the beginning and 178.2 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.55 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 160.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 620.86 ms. Allocated memory is still 200.3 MB. Free memory was 159.8 MB in the beginning and 128.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [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] long long *a = malloc(sizeof(long long)*N); [L28] i=0 [L28] COND FALSE !(i