/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:16:50,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:16:50,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:16:50,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:16:50,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:16:50,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:16:50,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:16:50,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:16:50,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:16:50,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:16:50,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:16:50,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:16:50,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:16:50,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:16:50,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:16:50,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:16:50,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:16:50,155 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 05:16:50,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:16:50,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:16:50,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:16:50,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:16:50,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:16:50,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:16:50,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:16:50,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:16:50,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:16:50,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:16:50,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:16:50,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:16:50,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:16:50,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:16:50,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:16:50,195 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:16:50,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:16:50,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:16:50,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:50,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:16:50,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:16:50,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:16:50,197 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:16:50,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:16:50,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:16:50,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:16:50,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:16:50,677 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:16:50,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c [2020-11-07 05:16:50,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72819bed0/244f5346552140dcb39e085ce3a28b7e/FLAG1eadefe55 [2020-11-07 05:16:51,450 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:16:51,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20.c [2020-11-07 05:16:51,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72819bed0/244f5346552140dcb39e085ce3a28b7e/FLAG1eadefe55 [2020-11-07 05:16:51,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72819bed0/244f5346552140dcb39e085ce3a28b7e [2020-11-07 05:16:51,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:16:51,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:16:51,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:51,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:16:51,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:16:51,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:51" (1/1) ... [2020-11-07 05:16:51,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6f9025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:51, skipping insertion in model container [2020-11-07 05:16:51,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:51" (1/1) ... [2020-11-07 05:16:51,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:16:51,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:16:52,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:52,074 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:16:52,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:52,108 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:16:52,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52 WrapperNode [2020-11-07 05:16:52,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:52,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:16:52,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:16:52,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:16:52,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (1/1) ... [2020-11-07 05:16:52,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:16:52,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:16:52,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:16:52,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:16:52,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (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 05:16:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:16:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:16:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:16:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-11-07 05:16:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:16:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:16:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:16:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:16:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:16:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-11-07 05:16:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:16:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:16:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:16:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:16:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:16:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:16:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:16:52,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:16:52,622 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:16:52,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:52 BoogieIcfgContainer [2020-11-07 05:16:52,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:16:52,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:16:52,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:16:52,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:16:52,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:16:51" (1/3) ... [2020-11-07 05:16:52,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2d44f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:52, skipping insertion in model container [2020-11-07 05:16:52,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:52" (2/3) ... [2020-11-07 05:16:52,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2d44f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:52, skipping insertion in model container [2020-11-07 05:16:52,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:52" (3/3) ... [2020-11-07 05:16:52,635 INFO L111 eAbstractionObserver]: Analyzing ICFG test20.c [2020-11-07 05:16:52,653 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:16:52,657 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:16:52,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:16:52,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:16:52,737 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:16:52,739 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:16:52,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:16:52,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:16:52,745 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:16:52,746 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:16:52,746 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:16:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-07 05:16:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-07 05:16:52,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:52,793 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] [2020-11-07 05:16:52,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:52,806 INFO L82 PathProgramCache]: Analyzing trace with hash 908165075, now seen corresponding path program 1 times [2020-11-07 05:16:52,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:52,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914172311] [2020-11-07 05:16:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:53,395 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 05:16:53,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914172311] [2020-11-07 05:16:53,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:53,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:16:53,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781950020] [2020-11-07 05:16:53,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:16:53,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:53,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:16:53,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:53,425 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2020-11-07 05:16:53,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:53,859 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2020-11-07 05:16:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:16:53,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-07 05:16:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:53,869 INFO L225 Difference]: With dead ends: 40 [2020-11-07 05:16:53,870 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:16:53,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:16:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:16:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:16:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:16:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:16:53,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-07 05:16:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:53,906 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:16:53,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:16:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:16:53,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:16:53,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:16:53,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:16:54,377 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,378 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,378 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,378 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,378 INFO L262 CegarLoopResult]: At program point equalEXIT(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 05:16:54,379 INFO L262 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-11-07 05:16:54,379 INFO L269 CegarLoopResult]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true [2020-11-07 05:16:54,379 INFO L262 CegarLoopResult]: At program point equalFINAL(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 05:16:54,379 INFO L262 CegarLoopResult]: At program point L8(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-11-07 05:16:54,380 INFO L262 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 05:16:54,380 INFO L262 CegarLoopResult]: At program point L6(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= equal_~a.base |equal_#in~b.base|)) (not (= (select |#valid| |~#a~0.base|) 1)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 05:16:54,380 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,380 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,380 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:16:54,381 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,381 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 05:16:54,381 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,382 INFO L262 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 16) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 05:16:54,382 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1) [2020-11-07 05:16:54,382 INFO L262 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1) [2020-11-07 05:16:54,382 INFO L262 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 05:16:54,383 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-07 05:16:54,383 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,384 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 05:16:54,384 INFO L262 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 05:16:54,384 INFO L262 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 05:16:54,385 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 05:16:54,385 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 05:16:54,385 INFO L262 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 05:16:54,385 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 18 21) the Hoare annotation is: true [2020-11-07 05:16:54,386 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 18 21) the Hoare annotation is: true [2020-11-07 05:16:54,386 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 18 21) the Hoare annotation is: true [2020-11-07 05:16:54,386 INFO L269 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-11-07 05:16:54,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:16:54 BoogieIcfgContainer [2020-11-07 05:16:54,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:16:54,434 INFO L168 Benchmark]: Toolchain (without parser) took 2618.79 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.9 MB in the beginning and 91.0 MB in the end (delta: 36.0 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:54,435 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:16:54,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 117.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:54,440 INFO L168 Benchmark]: Boogie Preprocessor took 33.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:54,441 INFO L168 Benchmark]: RCFGBuilder took 480.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 102.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:54,448 INFO L168 Benchmark]: TraceAbstraction took 1802.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.3 MB in the beginning and 91.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:54,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 117.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 480.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 102.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1802.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.3 MB in the beginning and 91.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 42.2 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: 6]: Loop Invariant Derived loop invariant: (a == b || a == b) || !(\valid[a] == 1) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for equal Derived contract for procedure equal: ((a == b || !(\valid[a] == 1)) || (!(a == b) && !(a == b))) || b == a - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 31 SDslu, 60 SDs, 0 SdLazy, 50 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 33 PreInvPairs, 40 NumberOfFragments, 240 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 533 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1995 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...