/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 -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 17:44:12,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:12,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:12,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:12,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:12,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:12,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:12,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:12,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:12,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:12,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:12,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:12,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:12,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:12,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:12,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:12,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:12,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:12,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:12,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:12,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:12,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:12,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:12,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:12,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:12,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:12,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:12,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:12,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:12,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:12,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:12,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:12,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:12,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:12,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:12,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:12,811 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 17:44:12,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:12,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:12,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:12,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:12,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:12,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:12,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:12,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:12,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:12,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:12,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:12,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:12,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:12,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:12,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:12,827 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:12,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:12,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:12,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:12,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:12,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:12,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:12,829 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:13,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:13,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:13,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:13,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:13,341 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:13,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-09-04 17:44:13,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99e44950d/99cc7d6e8f3f4043b83c2d7d52c9f773/FLAG32e7c16e4 [2020-09-04 17:44:14,050 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:14,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-09-04 17:44:14,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99e44950d/99cc7d6e8f3f4043b83c2d7d52c9f773/FLAG32e7c16e4 [2020-09-04 17:44:14,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99e44950d/99cc7d6e8f3f4043b83c2d7d52c9f773 [2020-09-04 17:44:14,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:14,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:14,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:14,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:14,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:14,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14, skipping insertion in model container [2020-09-04 17:44:14,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:14,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:14,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:14,683 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:14,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:14,727 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:14,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14 WrapperNode [2020-09-04 17:44:14,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:14,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:14,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:14,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:14,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:14,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:14,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:14,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:14,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (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 17:44:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:15,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:15,261 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:44:15,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:15 BoogieIcfgContainer [2020-09-04 17:44:15,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:15,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:15,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:15,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:15,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:14" (1/3) ... [2020-09-04 17:44:15,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3c0adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:15, skipping insertion in model container [2020-09-04 17:44:15,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (2/3) ... [2020-09-04 17:44:15,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3c0adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:15, skipping insertion in model container [2020-09-04 17:44:15,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:15" (3/3) ... [2020-09-04 17:44:15,279 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-09-04 17:44:15,294 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:15,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:15,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:15,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:15,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:15,418 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:15,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:15,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:15,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:15,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:15,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 17:44:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:44:15,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:15,451 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 17:44:15,452 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:15,458 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-04 17:44:15,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:15,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578371510] [2020-09-04 17:44:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:15,544 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,787 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 17:44:15,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578371510] [2020-09-04 17:44:15,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:15,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:15,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777679040] [2020-09-04 17:44:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:15,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:15,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:15,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:15,817 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-04 17:44:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:16,027 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-04 17:44:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:16,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-04 17:44:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:16,041 INFO L225 Difference]: With dead ends: 113 [2020-09-04 17:44:16,041 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 17:44:16,047 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 17:44:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 17:44:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-04 17:44:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 17:44:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-04 17:44:16,102 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-04 17:44:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:16,103 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-04 17:44:16,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-04 17:44:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:44:16,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:16,105 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 17:44:16,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:16,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-04 17:44:16,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:16,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22260412] [2020-09-04 17:44:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:16,110 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:16,247 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 17:44:16,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22260412] [2020-09-04 17:44:16,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:16,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:16,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165465746] [2020-09-04 17:44:16,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:16,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:16,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:16,251 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-04 17:44:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:16,461 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-09-04 17:44:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:16,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-04 17:44:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:16,464 INFO L225 Difference]: With dead ends: 99 [2020-09-04 17:44:16,464 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 17:44:16,466 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 17:44:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 17:44:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-09-04 17:44:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 17:44:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-04 17:44:16,484 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-04 17:44:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:16,484 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-04 17:44:16,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-04 17:44:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 17:44:16,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:16,487 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 17:44:16,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:16,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:16,488 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-04 17:44:16,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:16,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761881644] [2020-09-04 17:44:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:16,527 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:17,061 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 17:44:17,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761881644] [2020-09-04 17:44:17,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:17,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 17:44:17,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436305317] [2020-09-04 17:44:17,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 17:44:17,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:17,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 17:44:17,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-09-04 17:44:17,065 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-09-04 17:44:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:18,198 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-04 17:44:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 17:44:18,198 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-09-04 17:44:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:18,203 INFO L225 Difference]: With dead ends: 107 [2020-09-04 17:44:18,203 INFO L226 Difference]: Without dead ends: 101 [2020-09-04 17:44:18,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=318, Invalid=1242, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 17:44:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-04 17:44:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 73. [2020-09-04 17:44:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-04 17:44:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-04 17:44:18,224 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2020-09-04 17:44:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:18,224 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-04 17:44:18,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 17:44:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-04 17:44:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 17:44:18,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:18,226 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 17:44:18,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:18,227 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-04 17:44:18,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:18,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307831271] [2020-09-04 17:44:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:18,235 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:18,255 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:18,255 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:18,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:44:18,284 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:18,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:18 BoogieIcfgContainer [2020-09-04 17:44:18,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:18,289 INFO L168 Benchmark]: Toolchain (without parser) took 3896.40 ms. Allocated memory was 145.2 MB in the beginning and 246.9 MB in the end (delta: 101.7 MB). Free memory was 102.2 MB in the beginning and 137.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:18,290 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-04 17:44:18,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.91 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:18,292 INFO L168 Benchmark]: Boogie Preprocessor took 135.86 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 179.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:18,293 INFO L168 Benchmark]: RCFGBuilder took 404.14 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 159.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:18,294 INFO L168 Benchmark]: TraceAbstraction took 3014.68 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 159.9 MB in the beginning and 137.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:18,299 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 145.2 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.91 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.86 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 179.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.14 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 159.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3014.68 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 159.9 MB in the beginning and 137.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 67.0 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