/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/ldv-regression/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:04:33,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:04:33,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:04:33,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:04:33,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:04:33,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:04:33,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:04:33,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:04:33,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:04:33,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:04:33,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:04:33,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:04:33,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:04:33,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:04:33,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:04:33,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:04:33,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:04:33,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:04:33,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:04:33,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:04:33,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:04:33,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:04:33,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:04:33,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:04:33,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:04:33,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:04:33,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:04:33,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:04:33,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:04:33,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:04:33,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:04:33,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:04:33,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:04:33,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:04:33,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:04:33,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:04:33,283 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:04:33,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:04:33,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:04:33,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:04:33,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:04:33,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:04:33,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:04:33,285 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:04:33,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:04:33,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:04:33,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:04:33,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:04:33,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:04:33,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2020-10-24 01:04:33,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9394814/0e64bdf0d2ae4efaa80792437fcc6f64/FLAGf87614f8c [2020-10-24 01:04:34,415 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:04:34,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test08.c [2020-10-24 01:04:34,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9394814/0e64bdf0d2ae4efaa80792437fcc6f64/FLAGf87614f8c [2020-10-24 01:04:34,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9394814/0e64bdf0d2ae4efaa80792437fcc6f64 [2020-10-24 01:04:34,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:04:34,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:04:34,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:04:34,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:04:34,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:04:34,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:04:34" (1/1) ... [2020-10-24 01:04:34,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229e11d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:34, skipping insertion in model container [2020-10-24 01:04:34,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:04:34" (1/1) ... [2020-10-24 01:04:34,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:04:34,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:04:34,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:04:34,986 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:04:35,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:04:35,022 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:04:35,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35 WrapperNode [2020-10-24 01:04:35,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:04:35,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:04:35,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:04:35,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:04:35,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (1/1) ... [2020-10-24 01:04:35,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:04:35,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:04:35,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:04:35,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:04:35,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (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 [2020-10-24 01:04:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:04:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:04:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:04:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-24 01:04:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:04:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:04:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:04:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:04:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:04:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-24 01:04:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:04:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:04:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:04:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:04:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:04:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:04:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:04:35,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:04:35,699 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 01:04:35,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:04:35 BoogieIcfgContainer [2020-10-24 01:04:35,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:04:35,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:04:35,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:04:35,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:04:35,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:04:34" (1/3) ... [2020-10-24 01:04:35,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4516df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:04:35, skipping insertion in model container [2020-10-24 01:04:35,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:04:35" (2/3) ... [2020-10-24 01:04:35,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4516df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:04:35, skipping insertion in model container [2020-10-24 01:04:35,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:04:35" (3/3) ... [2020-10-24 01:04:35,716 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2020-10-24 01:04:35,730 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:04:35,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:04:35,752 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:04:35,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:04:35,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:04:35,794 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:04:35,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:04:35,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:04:35,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:04:35,795 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:04:35,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:04:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-24 01:04:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-24 01:04:35,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:35,834 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] [2020-10-24 01:04:35,834 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:35,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1393765424, now seen corresponding path program 1 times [2020-10-24 01:04:35,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:35,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311150203] [2020-10-24 01:04:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:04:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 01:04:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:04:36,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311150203] [2020-10-24 01:04:36,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:04:36,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-24 01:04:36,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975995601] [2020-10-24 01:04:36,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 01:04:36,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:04:36,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 01:04:36,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:04:36,421 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 9 states. [2020-10-24 01:04:36,830 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-24 01:04:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:04:37,120 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-10-24 01:04:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:04:37,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-24 01:04:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:04:37,133 INFO L225 Difference]: With dead ends: 81 [2020-10-24 01:04:37,133 INFO L226 Difference]: Without dead ends: 49 [2020-10-24 01:04:37,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:04:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-24 01:04:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-24 01:04:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-24 01:04:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 48 transitions. [2020-10-24 01:04:37,193 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 48 transitions. Word has length 47 [2020-10-24 01:04:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:04:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 48 transitions. [2020-10-24 01:04:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 01:04:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2020-10-24 01:04:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-24 01:04:37,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:37,197 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] [2020-10-24 01:04:37,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:04:37,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1951203953, now seen corresponding path program 1 times [2020-10-24 01:04:37,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:37,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272572036] [2020-10-24 01:04:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:04:37,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:04:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:04:37,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:04:37,392 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 01:04:37,393 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 01:04:37,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:04:37,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:04:37 BoogieIcfgContainer [2020-10-24 01:04:37,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:04:37,484 INFO L168 Benchmark]: Toolchain (without parser) took 2730.11 ms. Allocated memory is still 157.3 MB. Free memory was 137.1 MB in the beginning and 76.7 MB in the end (delta: 60.4 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:37,485 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:04:37,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.96 ms. Allocated memory is still 157.3 MB. Free memory was 136.5 MB in the beginning and 127.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:37,487 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 157.3 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:37,489 INFO L168 Benchmark]: RCFGBuilder took 642.02 ms. Allocated memory is still 157.3 MB. Free memory was 125.8 MB in the beginning and 125.2 MB in the end (delta: 632.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:37,490 INFO L168 Benchmark]: TraceAbstraction took 1776.31 ms. Allocated memory is still 157.3 MB. Free memory was 124.7 MB in the beginning and 76.7 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:04:37,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.96 ms. Allocated memory is still 157.3 MB. Free memory was 136.5 MB in the beginning and 127.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.23 ms. Allocated memory is still 157.3 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 642.02 ms. Allocated memory is still 157.3 MB. Free memory was 125.8 MB in the beginning and 125.2 MB in the end (delta: 632.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1776.31 ms. Allocated memory is still 157.3 MB. Free memory was 124.7 MB in the beginning and 76.7 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int a, b; VAL [\old(a)=62, \old(a)=60, \old(b)=52, \old(b)=64, \old(p1)=59, \old(p1)=53, \old(p2)=63, \old(p2)=49, a={10:0}, b={3:0}, p1={53:59}, p2={63:49}] [L7] int *p1, *p2; VAL [\old(a)=62, \old(a)=60, \old(b)=52, \old(b)=64, \old(p1)=53, \old(p1)=59, \old(p2)=49, \old(p2)=63, a={10:0}, b={3:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={10:0}, p2={0:0}] [L22] p2 = &b VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L24] b = 1 VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L25] a = 5 VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L27] EXPR \read(a) VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(a)=5, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L27] a-- VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(a)=5, a={10:0}, a--=5, b={3:0}, p1={10:0}, p2={3:0}] [L29] CALL, EXPR f() VAL [\old(p1)=0, \old(p1)=10, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L10] EXPR \read(*p1) VAL [\old(p1)=0, \old(p1)=10, \old(p2)=0, \old(p2)=0, \read(*p1)=4, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L10] EXPR \read(*p2) VAL [\old(p1)=0, \old(p1)=10, \old(p2)=0, \old(p2)=0, \read(*p1)=4, \read(*p2)=1, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L10] EXPR \read(a) VAL [\old(p1)=10, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(*p1)=4, \read(*p2)=1, \read(a)=4, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}] [L10] int v = *p1 + *p2 - a; VAL [\old(p1)=10, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(*p1)=4, \read(*p2)=1, \read(a)=4, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}, v=1] [L11] COND TRUE v == 1 VAL [\old(p1)=10, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={10:0}, p2={3:0}, v=1] [L12] p1 = p2 VAL [\old(p1)=0, \old(p1)=10, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={3:0}, p2={3:0}, v=1] [L13] return v; VAL [\old(p1)=10, \old(p1)=0, \old(p2)=0, \old(p2)=0, \result=1, a={10:0}, b={3:0}, p1={3:0}, p2={3:0}, v=1] [L29] RET, EXPR f() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, f()=1, p1={3:0}, p2={3:0}] [L29] a = f() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, f()=1, p1={3:0}, p2={3:0}] [L31] EXPR \read(a) VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(a)=1, a={10:0}, b={3:0}, p1={3:0}, p2={3:0}] [L31] COND TRUE a && p1 == p2 VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(a)=1, a={10:0}, b={3:0}, p1={3:0}, p2={3:0}] [L38] CALL reach_error() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={3:0}, p2={3:0}] [L3] __assert_fail("0", "test08.c", 3, "reach_error") VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={10:0}, b={3:0}, p1={3:0}, p2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 167 SDslu, 90 SDs, 0 SdLazy, 90 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 9062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...