/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/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:10:03,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:03,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:03,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:03,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:03,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:03,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:03,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:03,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:03,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:03,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:03,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:03,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:03,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:03,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:03,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:03,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:03,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:03,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:03,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:03,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:03,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:03,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:03,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:03,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:10:03,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:10:03,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:10:03,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:10:03,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:10:03,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:10:03,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:10:03,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:10:03,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:10:03,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:10:03,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:10:03,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:10:03,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:10:03,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:10:03,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:03,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:03,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:03,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:10:03,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:03,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:03,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:03,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:03,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:03,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:03,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:03,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:03,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:03,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:03,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:03,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:03,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:03,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:03,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:03,125 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:03,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:03,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:03,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:03,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:03,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:03,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:03,126 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 [2020-09-04 23:10:03,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:03,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:03,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:03,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:03,604 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:03,605 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-09-04 23:10:03,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59ddd16ea/a44e6a9f6ab74311b9df188774b21a8f/FLAG5a2bcac7e [2020-09-04 23:10:04,219 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:04,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina2f.c [2020-09-04 23:10:04,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59ddd16ea/a44e6a9f6ab74311b9df188774b21a8f/FLAG5a2bcac7e [2020-09-04 23:10:04,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59ddd16ea/a44e6a9f6ab74311b9df188774b21a8f [2020-09-04 23:10:04,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:04,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:04,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:04,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:04,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:04,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:04,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb59baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04, skipping insertion in model container [2020-09-04 23:10:04,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:04,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:04,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:04,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:04,874 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:04,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:04,921 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:04,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04 WrapperNode [2020-09-04 23:10:04,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:04,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:04,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:04,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:05,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (1/1) ... [2020-09-04 23:10:05,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:05,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:05,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:05,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:05,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (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 [2020-09-04 23:10:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:10:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:10:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:10:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:05,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:05,453 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 23:10:05,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:05 BoogieIcfgContainer [2020-09-04 23:10:05,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:05,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:05,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:05,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:05,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:04" (1/3) ... [2020-09-04 23:10:05,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecce0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:05, skipping insertion in model container [2020-09-04 23:10:05,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:04" (2/3) ... [2020-09-04 23:10:05,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecce0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:05, skipping insertion in model container [2020-09-04 23:10:05,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:05" (3/3) ... [2020-09-04 23:10:05,470 INFO L109 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-09-04 23:10:05,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:05,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:05,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:05,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:05,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:05,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:05,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:05,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:05,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:05,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:05,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-04 23:10:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:10:05,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:05,584 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] [2020-09-04 23:10:05,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1325521379, now seen corresponding path program 1 times [2020-09-04 23:10:05,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:05,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979818671] [2020-09-04 23:10:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:05,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:05,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979818671] [2020-09-04 23:10:05,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:05,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:10:05,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741507819] [2020-09-04 23:10:05,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:10:05,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:05,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:10:05,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:05,900 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-09-04 23:10:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:06,102 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2020-09-04 23:10:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:10:06,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-04 23:10:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:06,116 INFO L225 Difference]: With dead ends: 125 [2020-09-04 23:10:06,117 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 23:10:06,122 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 [2020-09-04 23:10:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 23:10:06,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 23:10:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 23:10:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-04 23:10:06,182 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 35 [2020-09-04 23:10:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:06,183 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-04 23:10:06,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:10:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-04 23:10:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:10:06,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:06,186 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] [2020-09-04 23:10:06,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:06,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:06,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1536754598, now seen corresponding path program 1 times [2020-09-04 23:10:06,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:06,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598449495] [2020-09-04 23:10:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:06,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598449495] [2020-09-04 23:10:06,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:06,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:06,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705416322] [2020-09-04 23:10:06,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:06,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:06,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:06,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:06,359 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-09-04 23:10:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:06,606 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2020-09-04 23:10:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:10:06,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-04 23:10:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:06,611 INFO L225 Difference]: With dead ends: 122 [2020-09-04 23:10:06,611 INFO L226 Difference]: Without dead ends: 88 [2020-09-04 23:10:06,613 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 [2020-09-04 23:10:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-04 23:10:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2020-09-04 23:10:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-04 23:10:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-09-04 23:10:06,636 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 35 [2020-09-04 23:10:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:06,637 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-09-04 23:10:06,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-09-04 23:10:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 23:10:06,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:06,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:06,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:06,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash -313984591, now seen corresponding path program 1 times [2020-09-04 23:10:06,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:06,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926943434] [2020-09-04 23:10:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:06,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:06,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:06,857 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:10:06,857 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:10:06,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:06,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:06 BoogieIcfgContainer [2020-09-04 23:10:06,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:06,920 INFO L168 Benchmark]: Toolchain (without parser) took 2334.86 ms. Allocated memory was 135.3 MB in the beginning and 224.9 MB in the end (delta: 89.7 MB). Free memory was 99.9 MB in the beginning and 187.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:06,921 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 23:10:06,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.32 ms. Allocated memory is still 135.3 MB. Free memory was 99.5 MB in the beginning and 89.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:06,923 INFO L168 Benchmark]: Boogie Preprocessor took 128.34 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 89.0 MB in the beginning and 176.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:06,924 INFO L168 Benchmark]: RCFGBuilder took 408.69 ms. Allocated memory is still 199.2 MB. Free memory was 176.2 MB in the beginning and 155.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:06,925 INFO L168 Benchmark]: TraceAbstraction took 1455.34 ms. Allocated memory was 199.2 MB in the beginning and 224.9 MB in the end (delta: 25.7 MB). Free memory was 154.8 MB in the beginning and 187.5 MB in the end (delta: -32.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:06,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.32 ms. Allocated memory is still 135.3 MB. Free memory was 99.5 MB in the beginning and 89.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.34 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 89.0 MB in the beginning and 176.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.69 ms. Allocated memory is still 199.2 MB. Free memory was 176.2 MB in the beginning and 155.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1455.34 ms. Allocated memory was 199.2 MB in the beginning and 224.9 MB in the end (delta: 25.7 MB). Free memory was 154.8 MB in the beginning and 187.5 MB in the end (delta: -32.7 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)=10, 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] long long sum[1]; VAL [\old(N)=0, N=1, sum={4:0}] [L27] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-2:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L29] sum[0] = 1 VAL [\old(N)=0, a={-2:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L30] i=0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L30] COND TRUE i