/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/oomInt.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:03:52,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:03:52,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:03:52,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:03:52,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:03:52,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:03:52,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:03:52,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:03:52,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:03:52,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:03:52,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:03:52,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:03:52,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:03:52,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:03:52,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:03:52,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:03:52,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:03:52,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:03:52,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:03:52,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:03:52,302 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 01:03:52,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:03:52,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:03:52,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:03:52,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:03:52,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:03:52,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:03:52,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:03:52,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:03:52,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:03:52,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:03:52,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:03:52,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:03:52,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:03:52,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:03:52,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:03:52,321 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:03:52,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:03:52,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:03:52,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:03:52,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:03:52,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:03:52,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:03:52,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:03:52,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:03:52,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:03:52,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:03:52,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:03:52,839 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:03:52,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.c_1.i [2020-10-24 01:03:52,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf111dda7/4e6c0864c2ef484792043ce9f137eec2/FLAG1438d4a09 [2020-10-24 01:03:53,559 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:03:53,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.c_1.i [2020-10-24 01:03:53,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf111dda7/4e6c0864c2ef484792043ce9f137eec2/FLAG1438d4a09 [2020-10-24 01:03:53,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf111dda7/4e6c0864c2ef484792043ce9f137eec2 [2020-10-24 01:03:53,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:03:53,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:03:53,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:03:53,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:03:53,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:03:53,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:53" (1/1) ... [2020-10-24 01:03:53,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421cce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:53, skipping insertion in model container [2020-10-24 01:03:53,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:03:53" (1/1) ... [2020-10-24 01:03:53,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:03:53,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:03:54,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:03:54,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:03:54,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:03:54,216 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:03:54,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54 WrapperNode [2020-10-24 01:03:54,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:03:54,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:03:54,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:03:54,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:03:54,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (1/1) ... [2020-10-24 01:03:54,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:03:54,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:03:54,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:03:54,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:03:54,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (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 01:03:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:03:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:03:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:03:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-24 01:03:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2020-10-24 01:03:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2020-10-24 01:03:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-24 01:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2020-10-24 01:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2020-10-24 01:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:03:54,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:03:54,699 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 01:03:54,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:54 BoogieIcfgContainer [2020-10-24 01:03:54,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:03:54,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:03:54,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:03:54,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:03:54,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:03:53" (1/3) ... [2020-10-24 01:03:54,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267bbed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:54, skipping insertion in model container [2020-10-24 01:03:54,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:03:54" (2/3) ... [2020-10-24 01:03:54,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267bbed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:03:54, skipping insertion in model container [2020-10-24 01:03:54,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:03:54" (3/3) ... [2020-10-24 01:03:54,712 INFO L111 eAbstractionObserver]: Analyzing ICFG oomInt.c_1.i [2020-10-24 01:03:54,728 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:03:54,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:03:54,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:03:54,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:03:54,835 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:03:54,836 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:03:54,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:03:54,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:03:54,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:03:54,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:03:54,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:03:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-24 01:03:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-24 01:03:54,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:54,881 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] [2020-10-24 01:03:54,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:54,897 INFO L82 PathProgramCache]: Analyzing trace with hash 187921008, now seen corresponding path program 1 times [2020-10-24 01:03:54,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530541462] [2020-10-24 01:03:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:55,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:55,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:03:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:55,535 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 01:03:55,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530541462] [2020-10-24 01:03:55,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:03:55,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:03:55,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492311116] [2020-10-24 01:03:55,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:03:55,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:55,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:03:55,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:03:55,566 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 7 states. [2020-10-24 01:03:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:56,001 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-10-24 01:03:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 01:03:56,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-24 01:03:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:56,014 INFO L225 Difference]: With dead ends: 62 [2020-10-24 01:03:56,015 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 01:03:56,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:03:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 01:03:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 01:03:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 01:03:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-10-24 01:03:56,077 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2020-10-24 01:03:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:56,078 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-10-24 01:03:56,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:03:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-10-24 01:03:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-24 01:03:56,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:56,080 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] [2020-10-24 01:03:56,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:03:56,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:56,084 INFO L82 PathProgramCache]: Analyzing trace with hash 495958576, now seen corresponding path program 1 times [2020-10-24 01:03:56,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:56,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513690437] [2020-10-24 01:03:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:03:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:56,302 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 01:03:56,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513690437] [2020-10-24 01:03:56,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:03:56,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 01:03:56,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873069188] [2020-10-24 01:03:56,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:03:56,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:56,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:03:56,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:03:56,312 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 5 states. [2020-10-24 01:03:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:56,453 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-10-24 01:03:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 01:03:56,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-24 01:03:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:56,454 INFO L225 Difference]: With dead ends: 28 [2020-10-24 01:03:56,454 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:03:56,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:03:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:03:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:03:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:03:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:03:56,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-24 01:03:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:56,457 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:03:56,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:03:56,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:03:56,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:03:56,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:03:56,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:03:56,937 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 16 [2020-10-24 01:03:57,086 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,087 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,087 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,087 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,087 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,088 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,088 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,088 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,088 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,088 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,089 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,089 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~p~0 |old(~p~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 01:03:57,089 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,089 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 01:03:57,090 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,090 INFO L277 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-10-24 01:03:57,090 INFO L277 CegarLoopResult]: At program point __blast_assertEXIT(lines 7 10) the Hoare annotation is: true [2020-10-24 01:03:57,090 INFO L277 CegarLoopResult]: At program point __blast_assertFINAL(lines 7 10) the Hoare annotation is: true [2020-10-24 01:03:57,090 INFO L277 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-10-24 01:03:57,090 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,091 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,091 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,091 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:03:57,091 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 34 37) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-10-24 01:03:57,091 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 34 37) the Hoare annotation is: true [2020-10-24 01:03:57,092 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 34 37) the Hoare annotation is: true [2020-10-24 01:03:57,092 INFO L270 CegarLoopResult]: At program point abs_intEXIT(lines 17 26) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-10-24 01:03:57,092 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (not (= (+ |abs_int_#in~i| 3) 0)) (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0))) [2020-10-24 01:03:57,092 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-10-24 01:03:57,093 INFO L277 CegarLoopResult]: At program point abs_intENTRY(lines 17 26) the Hoare annotation is: true [2020-10-24 01:03:57,093 INFO L270 CegarLoopResult]: At program point L19(lines 19 25) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-10-24 01:03:57,093 INFO L270 CegarLoopResult]: At program point abs_intFINAL(lines 17 26) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-10-24 01:03:57,093 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= 1 ~p~0) [2020-10-24 01:03:57,094 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2020-10-24 01:03:57,094 INFO L270 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2020-10-24 01:03:57,094 INFO L270 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: false [2020-10-24 01:03:57,094 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (and (<= 1 |firstFunction_#t~ret7|) (<= 1 ~p~0)) [2020-10-24 01:03:57,095 INFO L277 CegarLoopResult]: At program point L31-3(lines 28 32) the Hoare annotation is: true [2020-10-24 01:03:57,095 INFO L270 CegarLoopResult]: At program point firstFunctionENTRY(lines 28 32) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-10-24 01:03:57,095 INFO L277 CegarLoopResult]: At program point firstFunctionEXIT(lines 28 32) the Hoare annotation is: true [2020-10-24 01:03:57,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:03:57 BoogieIcfgContainer [2020-10-24 01:03:57,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:03:57,121 INFO L168 Benchmark]: Toolchain (without parser) took 3183.31 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.8 MB in the beginning and 141.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:57,123 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 127.3 MB in the end (delta: 120.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:03:57,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.94 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 120.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:57,125 INFO L168 Benchmark]: Boogie Preprocessor took 39.45 ms. Allocated memory is still 153.1 MB. Free memory was 120.1 MB in the beginning and 118.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:57,127 INFO L168 Benchmark]: RCFGBuilder took 442.86 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 106.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:57,128 INFO L168 Benchmark]: TraceAbstraction took 2413.25 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 105.6 MB in the beginning and 141.3 MB in the end (delta: -35.7 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. [2020-10-24 01:03:57,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 127.3 MB in the end (delta: 120.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.94 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 120.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.45 ms. Allocated memory is still 153.1 MB. Free memory was 120.1 MB in the beginning and 118.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 442.86 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 106.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2413.25 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 105.6 MB in the beginning and 141.3 MB in the end (delta: -35.7 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for abs_int Derived contract for procedure abs_int: ((\old(i) == i || i + 3 == 0) && 3 <= \result) || (!(\old(i) + 3 == 0) && (\old(i) == i || i + 3 == 0)) - ProcedureContractResult [Line: 28]: Procedure Contract for firstFunction Derived contract for procedure firstFunction: 1 - ProcedureContractResult [Line: 34]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 26 SDslu, 123 SDs, 0 SdLazy, 81 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 48 PreInvPairs, 66 NumberOfFragments, 186 HoareAnnotationTreeSize, 48 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 388 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 4758 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...