/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/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:52,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:52,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:52,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:52,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:52,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:52,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:52,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:52,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:52,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:52,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:52,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:52,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:52,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:52,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:52,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:52,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:52,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:52,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:52,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:52,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:52,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:52,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:52,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:52,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:52,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:52,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:52,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:52,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:52,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:52,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:52,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:52,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:52,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:52,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:52,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:52,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:52,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:52,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:52,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:52,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:52,475 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 23:09:52,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:52,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:52,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:52,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:52,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:52,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:52,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:52,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:52,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:52,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:52,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:52,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:52,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:52,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:52,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:52,500 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:52,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:52,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:52,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:52,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:52,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:52,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:52,502 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 23:09:52,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:53,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:53,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:53,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:53,021 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:53,022 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-09-04 23:09:53,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e60beb828/75b7a8a179f64c4dbc99e3f2a28b1af4/FLAGcfbc3ac2e [2020-09-04 23:09:53,707 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:53,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-09-04 23:09:53,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e60beb828/75b7a8a179f64c4dbc99e3f2a28b1af4/FLAGcfbc3ac2e [2020-09-04 23:09:54,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e60beb828/75b7a8a179f64c4dbc99e3f2a28b1af4 [2020-09-04 23:09:54,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:54,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:54,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:54,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:54,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:54,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f127883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54, skipping insertion in model container [2020-09-04 23:09:54,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:54,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:54,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:54,360 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:54,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:54,402 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:54,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54 WrapperNode [2020-09-04 23:09:54,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:54,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:54,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:54,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:54,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (1/1) ... [2020-09-04 23:09:54,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:54,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:54,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:54,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:54,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (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 23:09:54,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:09:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:55,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:55,027 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 23:09:55,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:55 BoogieIcfgContainer [2020-09-04 23:09:55,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:55,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:55,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:55,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:55,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:54" (1/3) ... [2020-09-04 23:09:55,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f949846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:55, skipping insertion in model container [2020-09-04 23:09:55,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:54" (2/3) ... [2020-09-04 23:09:55,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f949846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:55, skipping insertion in model container [2020-09-04 23:09:55,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:55" (3/3) ... [2020-09-04 23:09:55,043 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-09-04 23:09:55,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:55,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:55,088 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:55,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:55,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:55,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:55,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:55,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:55,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:55,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:55,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 23:09:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 23:09:55,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:55,150 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] [2020-09-04 23:09:55,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-04 23:09:55,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:55,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860118578] [2020-09-04 23:09:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:55,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:55,436 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 23:09:55,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860118578] [2020-09-04 23:09:55,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:55,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:55,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468270709] [2020-09-04 23:09:55,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:55,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:55,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:55,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:55,466 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-04 23:09:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:55,709 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-04 23:09:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:55,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-04 23:09:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:55,728 INFO L225 Difference]: With dead ends: 113 [2020-09-04 23:09:55,728 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 23:09:55,736 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 23:09:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 23:09:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-04 23:09:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 23:09:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-04 23:09:55,808 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-04 23:09:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:55,809 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-04 23:09:55,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-04 23:09:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 23:09:55,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:55,811 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] [2020-09-04 23:09:55,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:55,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:55,812 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-04 23:09:55,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:55,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953970873] [2020-09-04 23:09:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:55,957 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 23:09:55,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953970873] [2020-09-04 23:09:55,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:55,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:55,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146802803] [2020-09-04 23:09:55,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:55,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:55,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:55,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:55,962 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-04 23:09:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:56,207 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-09-04 23:09:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:56,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-04 23:09:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:56,210 INFO L225 Difference]: With dead ends: 99 [2020-09-04 23:09:56,211 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 23:09:56,212 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 23:09:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 23:09:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-09-04 23:09:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 23:09:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-04 23:09:56,229 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-04 23:09:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:56,229 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-04 23:09:56,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-04 23:09:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 23:09:56,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:56,232 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] [2020-09-04 23:09:56,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:56,232 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:56,233 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-04 23:09:56,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:56,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343716119] [2020-09-04 23:09:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:56,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343716119] [2020-09-04 23:09:56,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:09:56,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-04 23:09:56,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596246358] [2020-09-04 23:09:56,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 23:09:56,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:56,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 23:09:56,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-09-04 23:09:56,893 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-09-04 23:09:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:58,126 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-04 23:09:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 23:09:58,129 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-09-04 23:09:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:58,136 INFO L225 Difference]: With dead ends: 107 [2020-09-04 23:09:58,136 INFO L226 Difference]: Without dead ends: 101 [2020-09-04 23:09:58,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 23:09:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-04 23:09:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 73. [2020-09-04 23:09:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-04 23:09:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-04 23:09:58,168 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2020-09-04 23:09:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:58,169 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-04 23:09:58,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 23:09:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-04 23:09:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 23:09:58,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:58,174 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] [2020-09-04 23:09:58,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:09:58,175 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:58,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-04 23:09:58,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:58,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781115307] [2020-09-04 23:09:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:58,232 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:58,232 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:58,232 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:58,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:09:58,269 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:58,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:58 BoogieIcfgContainer [2020-09-04 23:09:58,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:58,273 INFO L168 Benchmark]: Toolchain (without parser) took 4209.06 ms. Allocated memory was 139.5 MB in the beginning and 244.8 MB in the end (delta: 105.4 MB). Free memory was 103.1 MB in the beginning and 129.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:58,274 INFO L168 Benchmark]: CDTParser took 0.27 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). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:09:58,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.17 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 92.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:58,276 INFO L168 Benchmark]: Boogie Preprocessor took 132.67 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 179.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:58,277 INFO L168 Benchmark]: RCFGBuilder took 496.22 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:58,278 INFO L168 Benchmark]: TraceAbstraction took 3235.30 ms. Allocated memory was 202.4 MB in the beginning and 244.8 MB in the end (delta: 42.5 MB). Free memory was 160.4 MB in the beginning and 131.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:58,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.17 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 92.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.67 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 179.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.22 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3235.30 ms. Allocated memory was 202.4 MB in the beginning and 244.8 MB in the end (delta: 42.5 MB). Free memory was 160.4 MB in the beginning and 131.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 71.3 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 sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i