/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:29,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:29,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:29,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:01:29,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:29,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:29,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:29,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:01:29,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:29,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:29,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:29,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:29,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:29,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:29,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:29,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:29,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:29,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:29,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:29,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:29,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:29,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:29,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:29,162 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:29,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:29,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:29,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:29,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:29,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:29,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:29,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:29,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:29,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:29,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:29,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:29,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:29,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2020-10-23 22:01:29,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae5dfee6/c7e0a67d51414c4ca901d0d6c2b154a8/FLAGcbd8ab7a7 [2020-10-23 22:01:30,363 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:30,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2020-10-23 22:01:30,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae5dfee6/c7e0a67d51414c4ca901d0d6c2b154a8/FLAGcbd8ab7a7 [2020-10-23 22:01:30,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae5dfee6/c7e0a67d51414c4ca901d0d6c2b154a8 [2020-10-23 22:01:30,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:30,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:30,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:30,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:30,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:30,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:30,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155d411a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30, skipping insertion in model container [2020-10-23 22:01:30,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:30,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:30,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:30,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:30,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:30,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:30,989 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:30,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30 WrapperNode [2020-10-23 22:01:30,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:30,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:30,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:30,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:31,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (1/1) ... [2020-10-23 22:01:31,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:31,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:31,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:31,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:31,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (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 [2020-10-23 22:01:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:01:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:01:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:01:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:01:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:01:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:01:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:31,521 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:31,521 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:01:31,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:31 BoogieIcfgContainer [2020-10-23 22:01:31,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:31,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:31,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:31,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:31,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:30" (1/3) ... [2020-10-23 22:01:31,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4cd2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:31, skipping insertion in model container [2020-10-23 22:01:31,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:30" (2/3) ... [2020-10-23 22:01:31,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4cd2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:31, skipping insertion in model container [2020-10-23 22:01:31,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:31" (3/3) ... [2020-10-23 22:01:31,534 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2020-10-23 22:01:31,549 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:31,555 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:31,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:31,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:31,599 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:31,599 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:31,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:31,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:31,600 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:31,600 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:31,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-23 22:01:31,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 22:01:31,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:31,632 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] [2020-10-23 22:01:31,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:31,640 INFO L82 PathProgramCache]: Analyzing trace with hash -450178663, now seen corresponding path program 1 times [2020-10-23 22:01:31,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:31,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868224760] [2020-10-23 22:01:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:31,734 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:31,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868224760] [2020-10-23 22:01:31,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:31,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 22:01:31,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625814955] [2020-10-23 22:01:31,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 22:01:31,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 22:01:31,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:01:31,953 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-10-23 22:01:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:32,051 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-23 22:01:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 22:01:32,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-23 22:01:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:32,063 INFO L225 Difference]: With dead ends: 60 [2020-10-23 22:01:32,063 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 22:01:32,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:01:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 22:01:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-23 22:01:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 22:01:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-23 22:01:32,155 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-10-23 22:01:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:32,157 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-23 22:01:32,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 22:01:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-23 22:01:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 22:01:32,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:32,160 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] [2020-10-23 22:01:32,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:32,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1480233453, now seen corresponding path program 1 times [2020-10-23 22:01:32,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:32,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334829499] [2020-10-23 22:01:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:32,179 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:32,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334829499] [2020-10-23 22:01:32,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:32,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:01:32,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875353558] [2020-10-23 22:01:32,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:01:32,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:32,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:01:32,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:01:32,535 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 9 states. [2020-10-23 22:01:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:32,978 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-23 22:01:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:01:32,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-23 22:01:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:32,980 INFO L225 Difference]: With dead ends: 43 [2020-10-23 22:01:32,980 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 22:01:32,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-23 22:01:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 22:01:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-23 22:01:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 22:01:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-10-23 22:01:32,994 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2020-10-23 22:01:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:32,995 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-10-23 22:01:32,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:01:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-10-23 22:01:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 22:01:32,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:32,997 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] [2020-10-23 22:01:32,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:01:32,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:32,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1044717281, now seen corresponding path program 1 times [2020-10-23 22:01:32,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:32,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150465358] [2020-10-23 22:01:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:35,233 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-10-23 22:01:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:35,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:35,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150465358] [2020-10-23 22:01:35,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:35,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 22:01:35,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140148401] [2020-10-23 22:01:35,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 22:01:35,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:35,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 22:01:35,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:01:35,761 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 12 states. [2020-10-23 22:01:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:36,486 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-23 22:01:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 22:01:36,487 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-23 22:01:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:36,487 INFO L225 Difference]: With dead ends: 36 [2020-10-23 22:01:36,488 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:01:36,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-10-23 22:01:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:01:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:01:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:01:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:01:36,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-23 22:01:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:36,490 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:01:36,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 22:01:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:01:36,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:01:36,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:01:36,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:01:37,074 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,075 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,075 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,075 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,075 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,076 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,077 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 22:01:37,077 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:37,078 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,078 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,078 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,078 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,078 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:01:37,079 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 22:01:37,079 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 22:01:37,079 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:37,079 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:37,079 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:37,079 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< 0 main_~cnt~0) (<= 0 main_~b~0) (<= .cse1 .cse0))) [2020-10-23 22:01:37,080 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~a~0 main_~res~0) (<= main_~res~0 (+ main_~a~0 main_~b~0)) (<= main_~res~0 main_~a~0)) [2020-10-23 22:01:37,080 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-23 22:01:37,080 INFO L277 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-10-23 22:01:37,080 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-23 22:01:37,080 INFO L277 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-10-23 22:01:37,080 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-23 22:01:37,080 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true [2020-10-23 22:01:37,081 INFO L277 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-10-23 22:01:37,081 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 38) the Hoare annotation is: true [2020-10-23 22:01:37,081 INFO L277 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: true [2020-10-23 22:01:37,082 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (+ main_~res~0 main_~cnt~0 1))) (and (< 0 (+ main_~cnt~0 1)) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= 0 main_~b~0))) [2020-10-23 22:01:37,082 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (<= 0 main_~b~0) [2020-10-23 22:01:37,082 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= 0 main_~b~0) (<= .cse1 .cse0) (<= main_~res~0 .cse0))) [2020-10-23 22:01:37,082 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2020-10-23 22:01:37,083 INFO L270 CegarLoopResult]: At program point L32-3(lines 32 35) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 main_~res~0) (<= 0 main_~b~0) (<= main_~res~0 .cse0))) [2020-10-23 22:01:37,083 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-23 22:01:37,083 INFO L277 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-10-23 22:01:37,086 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-23 22:01:37,090 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-23 22:01:37,090 INFO L277 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-10-23 22:01:37,091 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:37,091 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:37,091 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:37,092 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:01:37,092 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:01:37,092 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:01:37,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:01:37 BoogieIcfgContainer [2020-10-23 22:01:37,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:01:37,122 INFO L168 Benchmark]: Toolchain (without parser) took 6391.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.5 MB in the beginning and 68.2 MB in the end (delta: 59.3 MB). Peak memory consumption was 90.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:37,124 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:01:37,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.64 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:37,127 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 116.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:37,130 INFO L168 Benchmark]: RCFGBuilder took 496.16 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 134.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:37,131 INFO L168 Benchmark]: TraceAbstraction took 5590.65 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.7 MB in the beginning and 68.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 95.9 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:37,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.64 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.53 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 116.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.16 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 134.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5590.65 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.7 MB in the beginning and 68.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 95.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 32]: Loop Invariant Derived loop invariant: ((a + b <= res + cnt && 0 <= b) && res + cnt <= a + b) && res <= a + b - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 92 SDslu, 168 SDs, 0 SdLazy, 248 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 46 LocationsWithAnnotation, 70 PreInvPairs, 84 NumberOfFragments, 173 HoareAnnotationTreeSize, 70 FomulaSimplifications, 220 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 46 FomulaSimplificationsInter, 1156 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...