/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-acceleration/simple_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:47:19,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:47:19,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:47:19,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:47:19,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:47:19,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:47:19,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:47:19,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:47:19,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:47:19,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:47:19,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:47:19,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:47:19,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:47:19,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:47:19,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:47:19,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:47:19,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:47:19,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:47:19,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:47:19,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:47:19,191 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 21:47:19,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:47:19,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:47:19,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:47:19,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:47:19,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:47:19,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:47:19,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:47:19,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:47:19,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:47:19,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:47:19,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:47:19,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:47:19,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:47:19,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:47:19,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:47:19,218 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:47:19,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:47:19,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:47:19,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:47:19,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:47:19,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:47:19,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:47:19,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:47:19,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:47:19,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:47:19,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:47:19,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:47:19,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:47:19,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2020-10-23 21:47:19,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94794be55/374ec108886d4cd9921f0f178768cefe/FLAGc34713232 [2020-10-23 21:47:20,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:47:20,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2020-10-23 21:47:20,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94794be55/374ec108886d4cd9921f0f178768cefe/FLAGc34713232 [2020-10-23 21:47:20,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94794be55/374ec108886d4cd9921f0f178768cefe [2020-10-23 21:47:20,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:47:20,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:47:20,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:47:20,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:47:20,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:47:20,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:20,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f37509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20, skipping insertion in model container [2020-10-23 21:47:20,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:20,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:47:20,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:47:20,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:47:20,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:47:20,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:47:20,977 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:47:20,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20 WrapperNode [2020-10-23 21:47:20,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:47:20,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:47:20,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:47:20,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:47:20,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:20,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:20,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:20,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:21,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:21,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:21,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (1/1) ... [2020-10-23 21:47:21,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:47:21,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:47:21,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:47:21,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:47:21,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (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 21:47:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:47:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:47:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:47:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:47:21,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:47:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:47:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:47:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:47:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:47:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 21:47:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:47:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:47:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:47:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:47:21,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:47:21,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:47:21,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:47:21,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:47:21,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:47:21,311 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:47:21,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:47:21 BoogieIcfgContainer [2020-10-23 21:47:21,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:47:21,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:47:21,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:47:21,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:47:21,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:47:20" (1/3) ... [2020-10-23 21:47:21,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cdcdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:47:21, skipping insertion in model container [2020-10-23 21:47:21,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:47:20" (2/3) ... [2020-10-23 21:47:21,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cdcdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:47:21, skipping insertion in model container [2020-10-23 21:47:21,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:47:21" (3/3) ... [2020-10-23 21:47:21,379 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-1.c [2020-10-23 21:47:21,400 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:47:21,405 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:47:21,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:47:21,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:47:21,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:47:21,443 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:47:21,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:47:21,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:47:21,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:47:21,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:47:21,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:47:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-23 21:47:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 21:47:21,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:47:21,471 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] [2020-10-23 21:47:21,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:47:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:47:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash 914702649, now seen corresponding path program 1 times [2020-10-23 21:47:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:47:21,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438891653] [2020-10-23 21:47:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:47:21,567 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:47:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:21,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:47:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:21,906 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 21:47:21,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438891653] [2020-10-23 21:47:21,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:47:21,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:47:21,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998620036] [2020-10-23 21:47:21,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:47:21,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:47:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:47:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:47:21,944 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-23 21:47:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:47:22,059 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-23 21:47:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:47:22,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-23 21:47:22,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:47:22,084 INFO L225 Difference]: With dead ends: 45 [2020-10-23 21:47:22,084 INFO L226 Difference]: Without dead ends: 24 [2020-10-23 21:47:22,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:47:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-23 21:47:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-23 21:47:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 21:47:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-23 21:47:22,161 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2020-10-23 21:47:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:47:22,162 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-23 21:47:22,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:47:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-23 21:47:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 21:47:22,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:47:22,165 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] [2020-10-23 21:47:22,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:47:22,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:47:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:47:22,167 INFO L82 PathProgramCache]: Analyzing trace with hash 714298592, now seen corresponding path program 1 times [2020-10-23 21:47:22,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:47:22,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114588070] [2020-10-23 21:47:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:47:22,179 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:47:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:47:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:47:22,411 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 21:47:22,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114588070] [2020-10-23 21:47:22,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:47:22,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 21:47:22,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606244704] [2020-10-23 21:47:22,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 21:47:22,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:47:22,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 21:47:22,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:47:22,422 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-10-23 21:47:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:47:22,697 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-23 21:47:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:47:22,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-23 21:47:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:47:22,701 INFO L225 Difference]: With dead ends: 24 [2020-10-23 21:47:22,701 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 21:47:22,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 21:47:22,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 21:47:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 21:47:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 21:47:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 21:47:22,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-23 21:47:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:47:22,704 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 21:47:22,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 21:47:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 21:47:22,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 21:47:22,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:47:22,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 21:47:23,039 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,040 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,040 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,040 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,040 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,040 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,040 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,041 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,041 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,042 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,042 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|)) [2020-10-23 21:47:23,042 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,043 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 21:47:23,043 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,043 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,043 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,043 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,044 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 21:47:23,045 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 21) the Hoare annotation is: true [2020-10-23 21:47:23,045 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 13 21) the Hoare annotation is: true [2020-10-23 21:47:23,045 INFO L277 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-10-23 21:47:23,045 INFO L277 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-10-23 21:47:23,046 INFO L277 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-10-23 21:47:23,046 INFO L277 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-10-23 21:47:23,046 INFO L277 CegarLoopResult]: At program point L16-2(lines 16 18) the Hoare annotation is: true [2020-10-23 21:47:23,047 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 18) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2020-10-23 21:47:23,047 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 13 21) the Hoare annotation is: true [2020-10-23 21:47:23,047 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-23 21:47:23,048 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-10-23 21:47:23,048 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:47:23,048 INFO L270 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 21:47:23,048 INFO L270 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:47:23,048 INFO L277 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-10-23 21:47:23,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:47:23 BoogieIcfgContainer [2020-10-23 21:47:23,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:47:23,067 INFO L168 Benchmark]: Toolchain (without parser) took 2313.23 ms. Allocated memory is still 154.1 MB. Free memory was 130.5 MB in the beginning and 89.8 MB in the end (delta: 40.7 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:23,070 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 125.8 MB. Free memory was 103.2 MB in the beginning and 103.1 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:47:23,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.72 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 120.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:23,074 INFO L168 Benchmark]: Boogie Preprocessor took 29.62 ms. Allocated memory is still 154.1 MB. Free memory was 120.8 MB in the beginning and 119.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:23,076 INFO L168 Benchmark]: RCFGBuilder took 331.58 ms. Allocated memory is still 154.1 MB. Free memory was 119.3 MB in the beginning and 137.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:23,077 INFO L168 Benchmark]: TraceAbstraction took 1702.72 ms. Allocated memory is still 154.1 MB. Free memory was 137.3 MB in the beginning and 89.8 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:23,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 125.8 MB. Free memory was 103.2 MB in the beginning and 103.1 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 221.72 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 120.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.62 ms. Allocated memory is still 154.1 MB. Free memory was 120.8 MB in the beginning and 119.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 331.58 ms. Allocated memory is still 154.1 MB. Free memory was 119.3 MB in the beginning and 137.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1702.72 ms. Allocated memory is still 154.1 MB. Free memory was 137.3 MB in the beginning and 89.8 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 22 SDslu, 45 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 43 PreInvPairs, 50 NumberOfFragments, 82 HoareAnnotationTreeSize, 43 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 412 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...