/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/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:25:33,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:25:33,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:25:33,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:25:33,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:25:33,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:25:33,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:25:33,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:25:33,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:25:33,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:25:33,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:25:33,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:25:33,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:25:33,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:25:33,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:25:33,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:25:33,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:25:33,502 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 02:25:33,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:25:33,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:25:33,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:25:33,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:25:33,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:25:33,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:25:33,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:25:33,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:25:33,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:25:33,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:25:33,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:25:33,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:25:33,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:25:33,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:25:33,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:25:33,529 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:25:33,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:25:33,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:25:33,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:25:33,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:25:33,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:25:33,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:25:33,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:25:33,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:25:33,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:25:33,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:25:33,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:25:33,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:25:33,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-10-24 02:25:34,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c55b6cf0/44219a7bacee4349be74005df4c0c328/FLAG30f589be1 [2020-10-24 02:25:34,610 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:25:34,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-10-24 02:25:34,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c55b6cf0/44219a7bacee4349be74005df4c0c328/FLAG30f589be1 [2020-10-24 02:25:34,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c55b6cf0/44219a7bacee4349be74005df4c0c328 [2020-10-24 02:25:34,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:25:34,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:25:34,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:34,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:25:34,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:25:34,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:34" (1/1) ... [2020-10-24 02:25:34,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7496719c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:34, skipping insertion in model container [2020-10-24 02:25:34,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:34" (1/1) ... [2020-10-24 02:25:34,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:25:35,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:25:35,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:35,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:25:35,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:35,206 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:25:35,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35 WrapperNode [2020-10-24 02:25:35,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:35,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:25:35,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:25:35,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:25:35,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (1/1) ... [2020-10-24 02:25:35,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:25:35,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:25:35,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:25:35,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:25:35,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (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 02:25:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:25:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:25:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:25:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:25:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:25:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:25:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:25:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:25:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:25:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:25:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:25:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:25:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:25:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:25:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:25:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:25:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:25:35,810 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:25:35,810 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:25:35,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:35 BoogieIcfgContainer [2020-10-24 02:25:35,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:25:35,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:25:35,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:25:35,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:25:35,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:34" (1/3) ... [2020-10-24 02:25:35,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674438e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:35, skipping insertion in model container [2020-10-24 02:25:35,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35" (2/3) ... [2020-10-24 02:25:35,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674438e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:35, skipping insertion in model container [2020-10-24 02:25:35,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:35" (3/3) ... [2020-10-24 02:25:35,825 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-10-24 02:25:35,838 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:25:35,843 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:25:35,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:25:35,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:25:35,895 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:25:35,895 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:25:35,895 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:25:35,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:25:35,896 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:25:35,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:25:35,896 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:25:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-24 02:25:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-24 02:25:35,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:35,929 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] [2020-10-24 02:25:35,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:35,938 INFO L82 PathProgramCache]: Analyzing trace with hash -464977974, now seen corresponding path program 1 times [2020-10-24 02:25:35,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:35,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991832039] [2020-10-24 02:25:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:36,727 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-10-24 02:25:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:36,845 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 02:25:36,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991832039] [2020-10-24 02:25:36,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:36,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-24 02:25:36,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963129355] [2020-10-24 02:25:36,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:25:36,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:36,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:25:36,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:25:36,870 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 11 states. [2020-10-24 02:25:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:37,489 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-24 02:25:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:25:37,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-24 02:25:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:37,502 INFO L225 Difference]: With dead ends: 63 [2020-10-24 02:25:37,502 INFO L226 Difference]: Without dead ends: 38 [2020-10-24 02:25:37,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:25:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-24 02:25:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-24 02:25:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-24 02:25:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-24 02:25:37,557 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 24 [2020-10-24 02:25:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:37,557 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-24 02:25:37,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:25:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-24 02:25:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-24 02:25:37,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:37,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:37,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:25:37,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:37,561 INFO L82 PathProgramCache]: Analyzing trace with hash 375463958, now seen corresponding path program 1 times [2020-10-24 02:25:37,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:37,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688365784] [2020-10-24 02:25:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:38,026 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-24 02:25:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-24 02:25:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:38,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688365784] [2020-10-24 02:25:38,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:38,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:25:38,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569385611] [2020-10-24 02:25:38,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:25:38,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:38,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:25:38,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:25:38,120 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 14 states. [2020-10-24 02:25:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:38,974 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-10-24 02:25:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 02:25:38,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-24 02:25:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:38,977 INFO L225 Difference]: With dead ends: 50 [2020-10-24 02:25:38,977 INFO L226 Difference]: Without dead ends: 47 [2020-10-24 02:25:38,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:25:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-24 02:25:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-24 02:25:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-24 02:25:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-24 02:25:39,014 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 33 [2020-10-24 02:25:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:39,016 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-24 02:25:39,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:25:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-24 02:25:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 02:25:39,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:39,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:39,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:25:39,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1933219146, now seen corresponding path program 2 times [2020-10-24 02:25:39,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:39,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657857468] [2020-10-24 02:25:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:39,508 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-24 02:25:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-24 02:25:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 02:25:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-24 02:25:39,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657857468] [2020-10-24 02:25:39,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:39,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 02:25:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13284470] [2020-10-24 02:25:39,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 02:25:39,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 02:25:39,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:25:39,614 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 15 states. [2020-10-24 02:25:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:40,210 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-24 02:25:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:25:40,215 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-24 02:25:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:40,216 INFO L225 Difference]: With dead ends: 45 [2020-10-24 02:25:40,216 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:25:40,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:25:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:25:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:25:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:25:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:25:40,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-10-24 02:25:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:40,220 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:25:40,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 02:25:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:25:40,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:25:40,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:25:40,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:25:40,855 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,856 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,856 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,856 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,856 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,857 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,857 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,857 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)|) (= |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 02:25:40,857 INFO L277 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,857 INFO L277 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point L6-4(line 6) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,858 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,859 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:25:40,859 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 28) the Hoare annotation is: true [2020-10-24 02:25:40,859 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-10-24 02:25:40,859 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 15 28) the Hoare annotation is: true [2020-10-24 02:25:40,860 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse2 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse2 main_~j~0) (<= .cse1 .cse0) (<= main_~j~0 .cse2))) [2020-10-24 02:25:40,860 INFO L270 CegarLoopResult]: At program point L25-1(lines 21 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-10-24 02:25:40,860 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~j~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse2 .cse3) (<= .cse3 .cse2))) [2020-10-24 02:25:40,860 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-10-24 02:25:40,860 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= main_~i~0 0) (= main_~j~0 0)) [2020-10-24 02:25:40,861 INFO L277 CegarLoopResult]: At program point L21-2(lines 15 28) the Hoare annotation is: true [2020-10-24 02:25:40,861 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= main_~i~0 0) [2020-10-24 02:25:40,862 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2020-10-24 02:25:40,862 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:25:40,862 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:40,863 INFO L270 CegarLoopResult]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:40,863 INFO L270 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:25:40,863 INFO L270 CegarLoopResult]: At program point L9-2(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:40,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:25:40 BoogieIcfgContainer [2020-10-24 02:25:40,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:25:40,891 INFO L168 Benchmark]: Toolchain (without parser) took 5920.14 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 107.6 MB in the beginning and 180.7 MB in the end (delta: -73.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:40,891 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:25:40,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.93 ms. Allocated memory is still 151.0 MB. Free memory was 106.9 MB in the beginning and 97.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:40,894 INFO L168 Benchmark]: Boogie Preprocessor took 31.64 ms. Allocated memory is still 151.0 MB. Free memory was 97.9 MB in the beginning and 96.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:40,896 INFO L168 Benchmark]: RCFGBuilder took 573.72 ms. Allocated memory is still 151.0 MB. Free memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: -27.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:40,898 INFO L168 Benchmark]: TraceAbstraction took 5070.47 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 123.0 MB in the beginning and 180.7 MB in the end (delta: -57.7 MB). Peak memory consumption was 94.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:40,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 229.93 ms. Allocated memory is still 151.0 MB. Free memory was 106.9 MB in the beginning and 97.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.64 ms. Allocated memory is still 151.0 MB. Free memory was 97.9 MB in the beginning and 96.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 573.72 ms. Allocated memory is still 151.0 MB. Free memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: -27.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5070.47 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 123.0 MB in the beginning and 180.7 MB in the end (delta: -57.7 MB). Peak memory consumption was 94.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((2 * i <= j && j <= 2 * i) && 3 * i <= k) && k <= 3 * i - ProcedureContractResult [Line: 6]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 88 SDslu, 334 SDs, 0 SdLazy, 344 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 60 PreInvPairs, 85 NumberOfFragments, 209 HoareAnnotationTreeSize, 60 FomulaSimplifications, 1856 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 37794 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 14/30 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...