/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-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:03:35,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:03:35,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:03:35,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:03:35,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:03:35,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:03:35,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:03:35,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:03:35,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:03:35,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:03:35,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:03:35,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:03:35,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:03:35,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:03:35,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:03:35,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:03:35,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:03:35,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:03:35,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:03:35,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:03:35,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:03:35,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:03:35,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:03:35,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:03:35,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:03:35,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:03:35,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:03:35,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:03:35,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:03:35,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:03:35,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:03:35,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:03:35,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:03:35,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:03:35,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:03:35,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:03:35,974 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:03:35,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:03:35,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:03:35,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:03:35,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:03:35,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:03:35,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:03:35,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:03:36,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:03:36,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:03:36,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:03:36,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:03:36,375 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:03:36,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-11-07 02:03:36,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08c394b6/3b90d94ecb0a4554bcf52d50eb34722d/FLAG457ce3812 [2020-11-07 02:03:37,124 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:03:37,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-11-07 02:03:37,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08c394b6/3b90d94ecb0a4554bcf52d50eb34722d/FLAG457ce3812 [2020-11-07 02:03:37,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08c394b6/3b90d94ecb0a4554bcf52d50eb34722d [2020-11-07 02:03:37,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:03:37,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:03:37,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:03:37,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:03:37,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:03:37,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2367d2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37, skipping insertion in model container [2020-11-07 02:03:37,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:03:37,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:03:37,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:03:37,719 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:03:37,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:03:37,755 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:03:37,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37 WrapperNode [2020-11-07 02:03:37,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:03:37,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:03:37,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:03:37,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:03:37,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (1/1) ... [2020-11-07 02:03:37,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:03:37,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:03:37,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:03:37,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:03:37,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (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 [2020-11-07 02:03:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:03:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:03:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:03:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:03:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:03:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:03:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:03:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:03:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:03:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:03:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:03:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:03:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:03:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:03:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:03:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:03:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:03:38,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:03:38,264 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:03:38,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:38 BoogieIcfgContainer [2020-11-07 02:03:38,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:03:38,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:03:38,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:03:38,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:03:38,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:03:37" (1/3) ... [2020-11-07 02:03:38,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63003987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:38, skipping insertion in model container [2020-11-07 02:03:38,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:37" (2/3) ... [2020-11-07 02:03:38,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63003987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:38, skipping insertion in model container [2020-11-07 02:03:38,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:38" (3/3) ... [2020-11-07 02:03:38,275 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-11-07 02:03:38,312 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:03:38,316 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:03:38,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:03:38,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:03:38,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:03:38,353 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:03:38,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:03:38,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:03:38,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:03:38,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:03:38,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:03:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-07 02:03:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-07 02:03:38,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:03:38,381 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] [2020-11-07 02:03:38,381 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:03:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:03:38,388 INFO L82 PathProgramCache]: Analyzing trace with hash -464977974, now seen corresponding path program 1 times [2020-11-07 02:03:38,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:03:38,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134196287] [2020-11-07 02:03:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:03:38,478 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:03:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:03:39,423 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-11-07 02:03:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:03:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:03:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:03:39,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134196287] [2020-11-07 02:03:39,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:03:39,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:03:39,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964822243] [2020-11-07 02:03:39,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:03:39,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:03:39,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:03:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:03:39,563 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 11 states. [2020-11-07 02:03:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:03:40,179 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-11-07 02:03:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:03:40,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-11-07 02:03:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:03:40,189 INFO L225 Difference]: With dead ends: 63 [2020-11-07 02:03:40,189 INFO L226 Difference]: Without dead ends: 38 [2020-11-07 02:03:40,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:03:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-07 02:03:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-07 02:03:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-07 02:03:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-07 02:03:40,242 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 24 [2020-11-07 02:03:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:03:40,243 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-07 02:03:40,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:03:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-07 02:03:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 02:03:40,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:03:40,245 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] [2020-11-07 02:03:40,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:03:40,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:03:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:03:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash 375463958, now seen corresponding path program 1 times [2020-11-07 02:03:40,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:03:40,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078860216] [2020-11-07 02:03:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:03:56,749 WARN L194 SmtUtils]: Spent 16.50 s on a formula simplification that was a NOOP. DAG size: 37 [2020-11-07 02:05:29,845 WARN L194 SmtUtils]: Spent 1.55 m on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-11-07 02:05:42,452 WARN L194 SmtUtils]: Spent 12.57 s on a formula simplification. DAG size of input: 1828 DAG size of output: 335 [2020-11-07 02:05:42,482 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:05:42,487 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:05:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:05:42,998 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-11-07 02:05:43,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:05:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:05:43,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-07 02:05:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:05:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:05:43,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078860216] [2020-11-07 02:05:43,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:05:43,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 02:05:43,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821649572] [2020-11-07 02:05:43,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 02:05:43,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:05:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 02:05:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:05:43,129 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 14 states. [2020-11-07 02:05:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:05:43,902 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-07 02:05:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 02:05:43,904 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-11-07 02:05:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:05:43,905 INFO L225 Difference]: With dead ends: 50 [2020-11-07 02:05:43,906 INFO L226 Difference]: Without dead ends: 47 [2020-11-07 02:05:43,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-11-07 02:05:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-07 02:05:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-07 02:05:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-07 02:05:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-07 02:05:43,924 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 33 [2020-11-07 02:05:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:05:43,925 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-07 02:05:43,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 02:05:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-07 02:05:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 02:05:43,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:05:43,927 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] [2020-11-07 02:05:43,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:05:43,927 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:05:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:05:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1933219146, now seen corresponding path program 2 times [2020-11-07 02:05:43,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:05:43,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741084610] [2020-11-07 02:05:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:06:04,528 WARN L194 SmtUtils]: Spent 20.60 s on a formula simplification that was a NOOP. DAG size: 37 [2020-11-07 02:07:33,031 WARN L194 SmtUtils]: Spent 1.48 m on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-11-07 02:07:43,900 WARN L194 SmtUtils]: Spent 10.85 s on a formula simplification. DAG size of input: 1828 DAG size of output: 365 [2020-11-07 02:07:43,912 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:43,918 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:44,470 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-11-07 02:07:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:44,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-07 02:07:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 02:07:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:44,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741084610] [2020-11-07 02:07:44,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:44,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 02:07:44,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550478966] [2020-11-07 02:07:44,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 02:07:44,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:44,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 02:07:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:07:44,578 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 15 states. [2020-11-07 02:07:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:45,082 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-11-07 02:07:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 02:07:45,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-11-07 02:07:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:45,086 INFO L225 Difference]: With dead ends: 45 [2020-11-07 02:07:45,086 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:07:45,087 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 [2020-11-07 02:07:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:07:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:07:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:07:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:07:45,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-11-07 02:07:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:45,092 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:07:45,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 02:07:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:07:45,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:07:45,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:07:45,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:07:45,691 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,692 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,692 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,692 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,692 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,692 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,692 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,693 INFO L262 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|)) [2020-11-07 02:07:45,693 INFO L269 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,693 INFO L269 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,693 INFO L269 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,693 INFO L269 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point L6-4(line 6) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:07:45,694 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 15 28) the Hoare annotation is: true [2020-11-07 02:07:45,695 INFO L262 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))) [2020-11-07 02:07:45,695 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 15 28) the Hoare annotation is: true [2020-11-07 02:07:45,695 INFO L262 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))) [2020-11-07 02:07:45,695 INFO L262 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))) [2020-11-07 02:07:45,695 INFO L262 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))) [2020-11-07 02:07:45,696 INFO L262 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))) [2020-11-07 02:07:45,696 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= main_~i~0 0) (= main_~j~0 0)) [2020-11-07 02:07:45,696 INFO L269 CegarLoopResult]: At program point L21-2(lines 15 28) the Hoare annotation is: true [2020-11-07 02:07:45,696 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= main_~i~0 0) [2020-11-07 02:07:45,696 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2020-11-07 02:07:45,696 INFO L262 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:07:45,697 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:07:45,697 INFO L262 CegarLoopResult]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:07:45,697 INFO L262 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:07:45,697 INFO L262 CegarLoopResult]: At program point L9-2(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:07:45,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:07:45 BoogieIcfgContainer [2020-11-07 02:07:45,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:07:45,717 INFO L168 Benchmark]: Toolchain (without parser) took 248209.29 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 97.5 MB in the end (delta: 30.5 MB). Peak memory consumption was 85.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:45,717 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 102.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:07:45,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.73 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 117.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:45,719 INFO L168 Benchmark]: Boogie Preprocessor took 35.93 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:45,720 INFO L168 Benchmark]: RCFGBuilder took 472.37 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 103.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:45,721 INFO L168 Benchmark]: TraceAbstraction took 247447.10 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 97.5 MB in the end (delta: 5.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:45,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 102.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.73 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 117.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.93 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 472.37 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 103.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 247447.10 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 97.5 MB in the end (delta: 5.7 MB). Peak memory consumption was 61.5 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: 246.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, 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, 2.7s 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, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...