/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:42,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:42,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:42,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:00:42,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:42,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:42,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:42,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:42,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:42,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:42,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:42,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:42,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:42,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:42,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:42,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:42,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:00:42,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:42,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:42,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:42,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:00:42,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:42,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:42,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:42,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:42,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:42,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:42,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:42,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:42,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:42,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:42,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:42,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:42,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:42,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:42,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:42,203 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:42,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:42,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:42,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:42,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:42,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:42,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:42,205 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:00:42,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:42,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:42,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:42,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:42,550 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:42,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2020-08-22 23:00:42,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b57d84/a667123dffbf4f3b99c548dbe00d08a2/FLAG36070bf01 [2020-08-22 23:00:43,113 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:43,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s5iff.c [2020-08-22 23:00:43,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b57d84/a667123dffbf4f3b99c548dbe00d08a2/FLAG36070bf01 [2020-08-22 23:00:43,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b57d84/a667123dffbf4f3b99c548dbe00d08a2 [2020-08-22 23:00:43,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:43,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:43,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:43,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:43,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:43,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b59379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43, skipping insertion in model container [2020-08-22 23:00:43,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:43,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:43,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:43,704 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:43,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:43,741 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:43,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43 WrapperNode [2020-08-22 23:00:43,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:43,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:43,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:43,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:43,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... [2020-08-22 23:00:43,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:43,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:43,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:43,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:43,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 23:00:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:44,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:44,257 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 23:00:44,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:44 BoogieIcfgContainer [2020-08-22 23:00:44,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:44,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:44,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:44,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:44,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:43" (1/3) ... [2020-08-22 23:00:44,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d28fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:44, skipping insertion in model container [2020-08-22 23:00:44,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:43" (2/3) ... [2020-08-22 23:00:44,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d28fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:44, skipping insertion in model container [2020-08-22 23:00:44,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:44" (3/3) ... [2020-08-22 23:00:44,272 INFO L109 eAbstractionObserver]: Analyzing ICFG s5iff.c [2020-08-22 23:00:44,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:44,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:44,310 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:44,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:44,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:44,351 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:44,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:44,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:44,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:44,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:44,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-08-22 23:00:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 23:00:44,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:44,384 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] [2020-08-22 23:00:44,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-08-22 23:00:44,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:44,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079251530] [2020-08-22 23:00:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:44,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079251530] [2020-08-22 23:00:44,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:44,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:44,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329443928] [2020-08-22 23:00:44,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:44,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:44,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:44,660 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-08-22 23:00:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:44,870 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-08-22 23:00:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:44,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-08-22 23:00:44,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:44,883 INFO L225 Difference]: With dead ends: 113 [2020-08-22 23:00:44,883 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 23:00:44,888 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 [2020-08-22 23:00:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 23:00:44,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-08-22 23:00:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 23:00:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-08-22 23:00:44,943 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-08-22 23:00:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:44,944 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-08-22 23:00:44,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-08-22 23:00:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 23:00:44,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:44,947 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] [2020-08-22 23:00:44,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:44,947 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-08-22 23:00:44,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:44,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020550515] [2020-08-22 23:00:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:45,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020550515] [2020-08-22 23:00:45,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:45,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:45,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122561022] [2020-08-22 23:00:45,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:45,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:45,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:45,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:45,163 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-08-22 23:00:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:45,355 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-08-22 23:00:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:45,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-08-22 23:00:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:45,358 INFO L225 Difference]: With dead ends: 99 [2020-08-22 23:00:45,359 INFO L226 Difference]: Without dead ends: 74 [2020-08-22 23:00:45,360 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 [2020-08-22 23:00:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-22 23:00:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-08-22 23:00:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 23:00:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-08-22 23:00:45,384 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-08-22 23:00:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:45,385 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-08-22 23:00:45,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-08-22 23:00:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 23:00:45,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:45,387 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] [2020-08-22 23:00:45,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:45,387 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-08-22 23:00:45,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:45,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435373172] [2020-08-22 23:00:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:45,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:45,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:45,557 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:00:45,557 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:45,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:45,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:45 BoogieIcfgContainer [2020-08-22 23:00:45,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:45,614 INFO L168 Benchmark]: Toolchain (without parser) took 2170.83 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 102.9 MB in the beginning and 202.7 MB in the end (delta: -99.8 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:45,615 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:45,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 92.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:45,618 INFO L168 Benchmark]: Boogie Preprocessor took 121.06 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.2 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:45,619 INFO L168 Benchmark]: RCFGBuilder took 399.89 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 160.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:45,622 INFO L168 Benchmark]: TraceAbstraction took 1342.99 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 159.7 MB in the beginning and 202.7 MB in the end (delta: -43.0 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:45,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 92.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.06 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.2 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.89 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 160.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1342.99 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 159.7 MB in the beginning and 202.7 MB in the end (delta: -43.0 MB). Peak memory consumption was 79.6 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; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; VAL [\old(N)=0, N=1] [L26] long long sum[1]; VAL [\old(N)=0, N=1, sum={2:0}] [L27] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i