/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:44,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:44,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:44,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:00:44,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:00:44,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:00:44,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:00:44,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:00:44,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:00:44,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:00:44,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:00:44,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:00:44,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:44,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:44,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:44,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:44,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:44,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:44,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:44,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:44,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:44,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:44,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:44,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:44,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 23:00:44,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 23:00:44,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 23:00:44,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 23:00:44,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 23:00:44,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 23:00:44,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 23:00:44,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 23:00:44,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 23:00:44,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 23:00:44,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 23:00:44,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 23:00:44,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 23:00:44,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 23:00:44,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:44,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:44,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:44,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:00:44,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:44,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:44,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:44,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:44,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:44,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:44,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:44,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:44,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:44,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:44,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:44,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:44,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:44,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:44,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:44,758 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:44,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:44,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:44,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:44,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:44,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:44,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:44,759 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 23:00:45,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:45,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:45,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:45,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:45,088 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:45,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-22 23:00:45,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3231ebcc3/d9fed8a3c33c4d94883dc5d7ef63ac55/FLAG8445fe124 [2020-08-22 23:00:45,698 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:45,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-22 23:00:45,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3231ebcc3/d9fed8a3c33c4d94883dc5d7ef63ac55/FLAG8445fe124 [2020-08-22 23:00:46,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3231ebcc3/d9fed8a3c33c4d94883dc5d7ef63ac55 [2020-08-22 23:00:46,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:46,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:46,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:46,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:46,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:46,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d80805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46, skipping insertion in model container [2020-08-22 23:00:46,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:46,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:46,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:46,359 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:46,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:46,489 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:46,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46 WrapperNode [2020-08-22 23:00:46,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:46,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:46,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:46,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:46,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... [2020-08-22 23:00:46,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:46,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:46,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:46,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:46,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 23:00:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:46,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:46,937 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 23:00:46,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:46 BoogieIcfgContainer [2020-08-22 23:00:46,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:46,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:46,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:46,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:46,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:46" (1/3) ... [2020-08-22 23:00:46,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20dead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:46, skipping insertion in model container [2020-08-22 23:00:46,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:46" (2/3) ... [2020-08-22 23:00:46,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20dead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:46, skipping insertion in model container [2020-08-22 23:00:46,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:46" (3/3) ... [2020-08-22 23:00:46,953 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-08-22 23:00:46,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:46,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:46,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:47,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:47,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:47,032 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:47,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:47,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:47,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:47,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:47,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-22 23:00:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 23:00:47,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:47,098 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:47,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:47,110 INFO L82 PathProgramCache]: Analyzing trace with hash 864246722, now seen corresponding path program 1 times [2020-08-22 23:00:47,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:47,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623731281] [2020-08-22 23:00:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:47,403 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 23:00:47,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623731281] [2020-08-22 23:00:47,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:47,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:47,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009486947] [2020-08-22 23:00:47,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:47,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:47,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:47,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:47,449 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-08-22 23:00:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:47,750 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2020-08-22 23:00:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:47,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-08-22 23:00:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:47,773 INFO L225 Difference]: With dead ends: 105 [2020-08-22 23:00:47,774 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 23:00:47,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:47,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 23:00:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-22 23:00:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 23:00:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-08-22 23:00:47,828 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 33 [2020-08-22 23:00:47,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:47,829 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-08-22 23:00:47,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-08-22 23:00:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 23:00:47,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:47,832 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:47,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:47,833 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1269072019, now seen corresponding path program 1 times [2020-08-22 23:00:47,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:47,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544093241] [2020-08-22 23:00:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:47,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:47,976 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 23:00:47,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544093241] [2020-08-22 23:00:47,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:47,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:47,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320870637] [2020-08-22 23:00:47,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:47,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:47,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:47,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:47,981 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-08-22 23:00:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:48,233 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-08-22 23:00:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:48,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-22 23:00:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:48,239 INFO L225 Difference]: With dead ends: 92 [2020-08-22 23:00:48,241 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 23:00:48,243 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 23:00:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 23:00:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-08-22 23:00:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 23:00:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-08-22 23:00:48,296 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 33 [2020-08-22 23:00:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:48,297 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-08-22 23:00:48,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-08-22 23:00:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 23:00:48,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:48,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:48,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:48,305 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1661969402, now seen corresponding path program 1 times [2020-08-22 23:00:48,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:48,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883674579] [2020-08-22 23:00:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:48,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:48,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:48,435 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:00:48,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:48,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:48,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:48 BoogieIcfgContainer [2020-08-22 23:00:48,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:48,525 INFO L168 Benchmark]: Toolchain (without parser) took 2438.10 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 103.0 MB in the beginning and 200.5 MB in the end (delta: -97.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 23:00:48,528 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:48,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.77 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 181.7 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:48,531 INFO L168 Benchmark]: Boogie Preprocessor took 56.36 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:48,540 INFO L168 Benchmark]: RCFGBuilder took 395.07 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 160.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:48,542 INFO L168 Benchmark]: TraceAbstraction took 1578.17 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 160.2 MB in the beginning and 200.5 MB in the end (delta: -40.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 23:00:48,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.77 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 181.7 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.36 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.07 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 160.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1578.17 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 160.2 MB in the beginning and 200.5 MB in the end (delta: -40.3 MB). There was no memory consumed. 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; VAL [\old(N)=6, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; VAL [\old(N)=0, N=1] [L26] int sum[1]; VAL [\old(N)=0, N=1, sum={3:0}] [L27] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L29] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L30] COND TRUE i