/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:20:57,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:20:57,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:20:57,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:20:57,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:20:57,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:20:57,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:20:57,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:20:57,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:20:57,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:20:57,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:20:57,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:20:57,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:20:57,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:20:57,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:20:57,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:20:57,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:20:57,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:20:57,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:20:57,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:20:57,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:20:57,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:20:57,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:20:57,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:20:57,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:20:57,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:20:57,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:20:57,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:20:57,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:20:57,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:20:57,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:20:57,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:20:57,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:20:57,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:20:57,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:20:57,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:20:57,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:20:57,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:20:57,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:20:57,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:20:57,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:20:57,531 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 02:20:57,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:20:57,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:20:57,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:20:57,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:20:57,554 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:20:57,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:20:57,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:20:57,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:20:57,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:20:57,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:20:57,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:20:57,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:20:57,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:20:57,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:20:57,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:20:57,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:20:57,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:20:57,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:20:57,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:20:57,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:20:57,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:20:57,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:20:57,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:20:57,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:20:57,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:20:57,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:20:57,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:20:57,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:20:57,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:20:57,559 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:20:57,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:20:57,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:20:57,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:20:57,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:20:57,908 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:20:57,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2020-08-22 02:20:57,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1ec48d3/4deba87e74324926a12feaa93cfb08a5/FLAG177c3bbf4 [2020-08-22 02:20:58,436 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:20:58,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sqmf.c [2020-08-22 02:20:58,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1ec48d3/4deba87e74324926a12feaa93cfb08a5/FLAG177c3bbf4 [2020-08-22 02:20:58,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1ec48d3/4deba87e74324926a12feaa93cfb08a5 [2020-08-22 02:20:58,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:20:58,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:20:58,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:58,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:20:58,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:20:58,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:58" (1/1) ... [2020-08-22 02:20:58,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bccad30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:58, skipping insertion in model container [2020-08-22 02:20:58,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:58" (1/1) ... [2020-08-22 02:20:58,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:20:58,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:20:59,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:59,092 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:20:59,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:59,129 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:20:59,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59 WrapperNode [2020-08-22 02:20:59,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:59,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:20:59,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:20:59,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:20:59,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (1/1) ... [2020-08-22 02:20:59,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:20:59,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:20:59,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:20:59,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:20:59,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (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 02:20:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:20:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:20:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 02:20:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 02:20:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:20:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:20:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:20:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:20:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:20:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:20:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:20:59,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:20:59,636 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 02:20:59,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:59 BoogieIcfgContainer [2020-08-22 02:20:59,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:20:59,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:20:59,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:20:59,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:20:59,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:20:58" (1/3) ... [2020-08-22 02:20:59,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ceb0ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:59, skipping insertion in model container [2020-08-22 02:20:59,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:59" (2/3) ... [2020-08-22 02:20:59,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ceb0ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:59, skipping insertion in model container [2020-08-22 02:20:59,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:59" (3/3) ... [2020-08-22 02:20:59,650 INFO L109 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-08-22 02:20:59,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:20:59,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:20:59,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:20:59,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:20:59,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:20:59,706 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:20:59,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:20:59,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:20:59,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:20:59,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:20:59,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:20:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 02:20:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 02:20:59,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:59,733 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 02:20:59,733 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 02:20:59,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:59,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77287968] [2020-08-22 02:20:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:59,947 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 02:20:59,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77287968] [2020-08-22 02:20:59,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:59,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:20:59,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048864306] [2020-08-22 02:20:59,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:20:59,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:59,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:20:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:20:59,975 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 02:21:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:21:00,131 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 02:21:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:21:00,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 02:21:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:21:00,146 INFO L225 Difference]: With dead ends: 58 [2020-08-22 02:21:00,147 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 02:21:00,151 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 02:21:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 02:21:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 02:21:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 02:21:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 02:21:00,191 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 02:21:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:21:00,192 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 02:21:00,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:21:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 02:21:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 02:21:00,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:21:00,194 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 02:21:00,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:21:00,194 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:21:00,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:21:00,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 02:21:00,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:21:00,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738801852] [2020-08-22 02:21:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:21:00,226 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 02:21:00,226 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 02:21:00,226 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:21:00,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:21:00,248 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 02:21:00,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:21:00 BoogieIcfgContainer [2020-08-22 02:21:00,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:21:00,251 INFO L168 Benchmark]: Toolchain (without parser) took 1391.14 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 131.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:00,252 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:21:00,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:00,256 INFO L168 Benchmark]: Boogie Preprocessor took 115.94 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:00,257 INFO L168 Benchmark]: RCFGBuilder took 395.10 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 163.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:00,258 INFO L168 Benchmark]: TraceAbstraction took 605.51 ms. Allocated memory is still 202.9 MB. Free memory was 162.4 MB in the beginning and 131.3 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:00,271 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 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.94 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.10 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 163.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 605.51 ms. Allocated memory is still 202.9 MB. Free memory was 162.4 MB in the beginning and 131.3 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 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); [L27] long long *b = malloc(sizeof(long long)*N); [L29] b[0] = 0 [L30] a[0] = 0 [L32] i=1 [L32] COND FALSE !(i