/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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:27,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:27,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:27,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:27,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:27,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:27,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:27,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:27,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:27,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:27,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:27,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:27,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:27,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:27,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:27,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:27,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:27,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:27,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:27,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:27,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:27,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:27,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:27,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:27,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:27,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:27,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:27,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:27,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:27,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:44:27,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:27,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:27,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:27,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:27,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:27,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:27,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:27,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:27,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:27,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:27,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:27,760 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 17:44:27,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:27,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:27,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:27,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:27,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:27,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:27,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:27,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:27,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:27,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:27,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:27,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:27,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:27,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:27,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:27,781 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:27,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:27,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:27,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:27,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:27,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:27,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:27,783 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:28,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:28,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:28,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:28,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:28,240 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:28,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-09-04 17:44:28,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca6e55854/29dc2e02b4354523a4d859aa1d505629/FLAG404f1a15b [2020-09-04 17:44:28,917 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:28,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-09-04 17:44:28,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca6e55854/29dc2e02b4354523a4d859aa1d505629/FLAG404f1a15b [2020-09-04 17:44:29,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca6e55854/29dc2e02b4354523a4d859aa1d505629 [2020-09-04 17:44:29,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:29,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:29,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:29,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:29,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:29,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3330734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29, skipping insertion in model container [2020-09-04 17:44:29,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:29,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:29,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:29,560 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:29,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:29,687 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:29,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29 WrapperNode [2020-09-04 17:44:29,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:29,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:29,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:29,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:29,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:29,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:29,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:29,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:29,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (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 17:44:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:30,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:30,205 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-04 17:44:30,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:30 BoogieIcfgContainer [2020-09-04 17:44:30,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:30,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:30,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:30,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:30,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:29" (1/3) ... [2020-09-04 17:44:30,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693a8842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:30, skipping insertion in model container [2020-09-04 17:44:30,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (2/3) ... [2020-09-04 17:44:30,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693a8842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:30, skipping insertion in model container [2020-09-04 17:44:30,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:30" (3/3) ... [2020-09-04 17:44:30,221 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-09-04 17:44:30,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:30,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:30,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:30,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:30,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:30,297 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:30,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:30,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:30,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:30,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:30,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-09-04 17:44:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:44:30,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:30,334 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 17:44:30,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash -456074008, now seen corresponding path program 1 times [2020-09-04 17:44:30,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:30,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390455610] [2020-09-04 17:44:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:30,423 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,636 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 17:44:30,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390455610] [2020-09-04 17:44:30,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:30,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:30,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563513747] [2020-09-04 17:44:30,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:30,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:30,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:30,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:30,668 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 3 states. [2020-09-04 17:44:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:30,952 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2020-09-04 17:44:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:30,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-09-04 17:44:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:30,967 INFO L225 Difference]: With dead ends: 177 [2020-09-04 17:44:30,967 INFO L226 Difference]: Without dead ends: 88 [2020-09-04 17:44:30,972 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 17:44:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-04 17:44:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-09-04 17:44:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 17:44:31,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-09-04 17:44:31,035 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 41 [2020-09-04 17:44:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:31,036 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-09-04 17:44:31,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-09-04 17:44:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:44:31,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:31,039 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 17:44:31,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:31,040 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:31,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1964521925, now seen corresponding path program 1 times [2020-09-04 17:44:31,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:31,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128884585] [2020-09-04 17:44:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:31,045 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:31,203 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 17:44:31,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128884585] [2020-09-04 17:44:31,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:31,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:31,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154594629] [2020-09-04 17:44:31,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:31,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:31,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:31,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:31,207 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 5 states. [2020-09-04 17:44:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:31,607 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2020-09-04 17:44:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:31,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-04 17:44:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:31,612 INFO L225 Difference]: With dead ends: 194 [2020-09-04 17:44:31,612 INFO L226 Difference]: Without dead ends: 134 [2020-09-04 17:44:31,617 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 17:44:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-04 17:44:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-09-04 17:44:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 17:44:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-04 17:44:31,644 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 41 [2020-09-04 17:44:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:31,645 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-04 17:44:31,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-04 17:44:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 17:44:31,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:31,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:31,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:31,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:31,649 INFO L82 PathProgramCache]: Analyzing trace with hash -725795370, now seen corresponding path program 1 times [2020-09-04 17:44:31,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:31,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030945675] [2020-09-04 17:44:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:31,703 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:31,782 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:31,783 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:31,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:31,814 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:31,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:31 BoogieIcfgContainer [2020-09-04 17:44:31,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:31,818 INFO L168 Benchmark]: Toolchain (without parser) took 2569.57 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 103.1 MB in the beginning and 169.1 MB in the end (delta: -66.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:31,819 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:31,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.81 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 181.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:31,821 INFO L168 Benchmark]: Boogie Preprocessor took 56.27 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:31,822 INFO L168 Benchmark]: RCFGBuilder took 464.50 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 154.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:31,823 INFO L168 Benchmark]: TraceAbstraction took 1601.14 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 153.5 MB in the beginning and 169.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:31,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.81 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 181.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.27 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.50 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 154.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1601.14 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 153.5 MB in the beginning and 169.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.0 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i