/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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:25,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:25,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:25,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:25,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:25,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:25,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:25,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:25,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:25,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:25,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:25,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:25,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:25,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:25,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:25,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:25,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:25,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:25,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:25,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:25,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:25,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:25,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:25,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:25,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:25,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:25,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:25,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:25,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:25,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:44:25,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:25,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:25,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:25,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:25,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:25,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:25,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:25,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:25,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:25,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:25,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:25,705 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 17:44:25,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:25,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:25,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:25,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:25,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:25,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:25,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:25,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:25,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:25,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:25,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:25,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:25,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:25,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:25,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:25,728 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:25,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:25,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:25,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:25,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:25,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:25,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:25,731 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:26,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:26,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:26,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:26,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:26,204 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:26,206 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-09-04 17:44:26,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7d4007f2/972d1d67f347496192abddb49a52925e/FLAG0fe564806 [2020-09-04 17:44:26,838 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:26,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-09-04 17:44:26,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7d4007f2/972d1d67f347496192abddb49a52925e/FLAG0fe564806 [2020-09-04 17:44:27,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7d4007f2/972d1d67f347496192abddb49a52925e [2020-09-04 17:44:27,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:27,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:27,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:27,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:27,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:27,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27, skipping insertion in model container [2020-09-04 17:44:27,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:27,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:27,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:27,500 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:27,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:27,678 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:27,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27 WrapperNode [2020-09-04 17:44:27,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:27,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:27,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:27,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:27,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (1/1) ... [2020-09-04 17:44:27,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:27,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:27,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:27,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:27,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (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 17:44:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:27,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:27,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:27,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:28,174 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:28,175 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 17:44:28,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:28 BoogieIcfgContainer [2020-09-04 17:44:28,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:28,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:28,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:28,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:28,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:27" (1/3) ... [2020-09-04 17:44:28,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ada9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:28, skipping insertion in model container [2020-09-04 17:44:28,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:27" (2/3) ... [2020-09-04 17:44:28,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ada9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:28, skipping insertion in model container [2020-09-04 17:44:28,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:28" (3/3) ... [2020-09-04 17:44:28,191 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-09-04 17:44:28,202 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:28,212 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:28,236 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:28,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:28,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:28,264 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:28,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:28,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:28,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:28,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:28,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-04 17:44:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:44:28,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:28,302 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] [2020-09-04 17:44:28,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:28,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:28,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1932017966, now seen corresponding path program 1 times [2020-09-04 17:44:28,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:28,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003462888] [2020-09-04 17:44:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:28,402 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:28,679 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 17:44:28,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003462888] [2020-09-04 17:44:28,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:28,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:28,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563313165] [2020-09-04 17:44:28,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:28,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:28,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:28,718 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-09-04 17:44:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:29,019 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2020-09-04 17:44:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:29,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-09-04 17:44:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:29,034 INFO L225 Difference]: With dead ends: 161 [2020-09-04 17:44:29,034 INFO L226 Difference]: Without dead ends: 80 [2020-09-04 17:44:29,039 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 17:44:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-04 17:44:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-04 17:44:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-04 17:44:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-09-04 17:44:29,099 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 41 [2020-09-04 17:44:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:29,100 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-09-04 17:44:29,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-09-04 17:44:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:44:29,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:29,102 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] [2020-09-04 17:44:29,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:29,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:29,104 INFO L82 PathProgramCache]: Analyzing trace with hash -690131343, now seen corresponding path program 1 times [2020-09-04 17:44:29,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:29,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717124634] [2020-09-04 17:44:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:29,107 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:29,261 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 17:44:29,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717124634] [2020-09-04 17:44:29,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:29,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:29,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214858791] [2020-09-04 17:44:29,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:29,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:29,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:29,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:29,266 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 5 states. [2020-09-04 17:44:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:29,553 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2020-09-04 17:44:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:29,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-04 17:44:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:29,558 INFO L225 Difference]: With dead ends: 168 [2020-09-04 17:44:29,558 INFO L226 Difference]: Without dead ends: 118 [2020-09-04 17:44:29,560 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 17:44:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-04 17:44:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 85. [2020-09-04 17:44:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-04 17:44:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-09-04 17:44:29,584 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 41 [2020-09-04 17:44:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:29,585 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-09-04 17:44:29,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-09-04 17:44:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-04 17:44:29,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:29,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:29,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:29,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:29,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1472096967, now seen corresponding path program 1 times [2020-09-04 17:44:29,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:29,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548890355] [2020-09-04 17:44:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:29,619 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:29,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:29,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:29,819 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:29,819 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:29,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:29,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:29 BoogieIcfgContainer [2020-09-04 17:44:29,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:29,858 INFO L168 Benchmark]: Toolchain (without parser) took 2664.39 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 167.0 MB in the end (delta: -64.6 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:29,869 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 17:44:29,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.72 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 102.0 MB in the beginning and 185.4 MB in the end (delta: -83.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:29,871 INFO L168 Benchmark]: Boogie Preprocessor took 60.21 ms. Allocated memory is still 206.6 MB. Free memory was 185.4 MB in the beginning and 183.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:29,873 INFO L168 Benchmark]: RCFGBuilder took 441.09 ms. Allocated memory is still 206.6 MB. Free memory was 183.1 MB in the beginning and 159.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:29,875 INFO L168 Benchmark]: TraceAbstraction took 1670.83 ms. Allocated memory was 206.6 MB in the beginning and 234.4 MB in the end (delta: 27.8 MB). Free memory was 159.0 MB in the beginning and 167.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:29,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.72 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 102.0 MB in the beginning and 185.4 MB in the end (delta: -83.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.21 ms. Allocated memory is still 206.6 MB. Free memory was 185.4 MB in the beginning and 183.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.09 ms. Allocated memory is still 206.6 MB. Free memory was 183.1 MB in the beginning and 159.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1670.83 ms. Allocated memory was 206.6 MB in the beginning and 234.4 MB in the end (delta: 27.8 MB). Free memory was 159.0 MB in the beginning and 167.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 19.9 MB. 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; [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] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i