/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/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:10:04,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:04,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:04,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:04,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:04,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:04,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:04,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:04,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:04,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:04,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:04,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:04,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:04,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:04,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:04,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:04,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:04,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:04,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:04,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:04,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:04,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:04,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:04,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:04,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:10:04,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:10:04,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:10:04,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:10:04,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:10:04,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 23:10:04,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:04,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:04,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:04,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:10:04,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:04,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:04,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:04,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:04,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:04,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:04,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:04,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:04,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:04,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:04,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:04,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:04,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:04,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:04,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:04,808 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:04,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:04,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:04,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:04,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:04,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:04,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:04,810 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:10:05,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:05,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:05,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:05,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:05,315 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:05,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2020-09-04 23:10:05,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37337c06d/2b2e9007d44e45d295de69ced694d7e3/FLAGa7fd8a18e [2020-09-04 23:10:05,958 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:05,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina3f.c [2020-09-04 23:10:05,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37337c06d/2b2e9007d44e45d295de69ced694d7e3/FLAGa7fd8a18e [2020-09-04 23:10:06,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37337c06d/2b2e9007d44e45d295de69ced694d7e3 [2020-09-04 23:10:06,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:06,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:06,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:06,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:06,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:06,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fa4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06, skipping insertion in model container [2020-09-04 23:10:06,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:06,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:06,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:06,589 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:06,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:06,718 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:06,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06 WrapperNode [2020-09-04 23:10:06,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:06,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:06,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:06,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:06,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... [2020-09-04 23:10:06,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:06,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:06,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:06,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:06,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:10:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:10:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:10:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:10:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:10:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:10:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:10:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:07,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:07,267 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 23:10:07,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:07 BoogieIcfgContainer [2020-09-04 23:10:07,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:07,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:07,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:07,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:07,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:06" (1/3) ... [2020-09-04 23:10:07,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91aa9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:07, skipping insertion in model container [2020-09-04 23:10:07,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:06" (2/3) ... [2020-09-04 23:10:07,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91aa9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:07, skipping insertion in model container [2020-09-04 23:10:07,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:07" (3/3) ... [2020-09-04 23:10:07,282 INFO L109 eAbstractionObserver]: Analyzing ICFG sina3f.c [2020-09-04 23:10:07,294 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:07,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:07,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:07,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:07,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:07,353 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:07,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:07,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:07,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:07,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:07,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:07,370 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-04 23:10:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 23:10:07,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:07,384 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:07,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1651935650, now seen corresponding path program 1 times [2020-09-04 23:10:07,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:07,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396499152] [2020-09-04 23:10:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:07,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396499152] [2020-09-04 23:10:07,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:07,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:10:07,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420491005] [2020-09-04 23:10:07,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:10:07,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:07,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:10:07,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:07,695 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2020-09-04 23:10:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:07,911 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2020-09-04 23:10:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:10:07,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-09-04 23:10:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:07,925 INFO L225 Difference]: With dead ends: 141 [2020-09-04 23:10:07,926 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 23:10:07,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:07,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 23:10:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 23:10:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 23:10:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-04 23:10:07,991 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 39 [2020-09-04 23:10:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:07,992 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-04 23:10:07,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:10:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-04 23:10:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 23:10:07,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:07,994 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] [2020-09-04 23:10:07,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:07,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash 725298104, now seen corresponding path program 1 times [2020-09-04 23:10:07,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:07,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805960896] [2020-09-04 23:10:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:08,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:08,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805960896] [2020-09-04 23:10:08,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:08,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:08,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925535903] [2020-09-04 23:10:08,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:08,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:08,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:08,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:08,179 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 5 states. [2020-09-04 23:10:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:08,542 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2020-09-04 23:10:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:10:08,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-04 23:10:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:08,547 INFO L225 Difference]: With dead ends: 140 [2020-09-04 23:10:08,547 INFO L226 Difference]: Without dead ends: 100 [2020-09-04 23:10:08,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:10:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-04 23:10:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2020-09-04 23:10:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 23:10:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-04 23:10:08,572 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 39 [2020-09-04 23:10:08,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:08,573 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-04 23:10:08,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-04 23:10:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-04 23:10:08,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:08,576 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] [2020-09-04 23:10:08,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:08,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1675406230, now seen corresponding path program 1 times [2020-09-04 23:10:08,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:08,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147894901] [2020-09-04 23:10:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:08,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:08,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:08,776 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:10:08,776 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:10:08,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:08,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:08 BoogieIcfgContainer [2020-09-04 23:10:08,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:08,905 INFO L168 Benchmark]: Toolchain (without parser) took 2595.49 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 103.2 MB in the beginning and 177.9 MB in the end (delta: -74.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:08,907 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:08,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.68 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 180.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:08,910 INFO L168 Benchmark]: Boogie Preprocessor took 53.29 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:08,919 INFO L168 Benchmark]: RCFGBuilder took 499.36 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 156.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:08,920 INFO L168 Benchmark]: TraceAbstraction took 1625.76 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 156.1 MB in the beginning and 177.9 MB in the end (delta: -21.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:08,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.68 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 180.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.29 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.36 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 156.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1625.76 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 156.1 MB in the beginning and 177.9 MB in the end (delta: -21.9 MB). Peak memory consumption was 10.6 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={7:0}] [L27] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-2:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={7:0}] [L28] int *b = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-2:0}, b={5:0}, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={7:0}] [L30] sum[0] = 1 VAL [\old(N)=0, a={-2:0}, b={5:0}, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={7:0}] [L31] i=0 VAL [\old(N)=0, a={-2:0}, b={5:0}, i=0, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={7:0}] [L31] COND TRUE i