/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:40:30,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:40:30,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:40:30,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:40:30,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:40:30,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:40:30,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:40:30,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:40:30,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:40:30,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:40:30,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:40:30,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:40:30,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:40:30,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:40:30,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:40:30,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:40:30,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:40:30,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:40:30,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:40:30,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:40:30,468 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 06:40:30,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:40:30,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:40:30,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:40:30,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:40:30,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:40:30,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:40:30,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:40:30,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:40:30,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:40:30,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:40:30,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:40:30,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:40:30,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:40:30,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:40:30,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:40:30,499 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:40:30,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:40:30,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:40:30,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:40:30,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:40:30,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:40:30,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:40:30,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:40:30,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:40:30,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:40:30,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:40:30,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:40:30,916 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:40:30,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-07 06:40:30,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a96ef460/502ffc1c9983405dbbb96895fa9c4cb1/FLAG372bbf133 [2020-11-07 06:40:31,556 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:40:31,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-07 06:40:31,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a96ef460/502ffc1c9983405dbbb96895fa9c4cb1/FLAG372bbf133 [2020-11-07 06:40:31,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a96ef460/502ffc1c9983405dbbb96895fa9c4cb1 [2020-11-07 06:40:31,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:40:31,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:40:31,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:31,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:40:31,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:40:31,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:31" (1/1) ... [2020-11-07 06:40:31,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c5aee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:31, skipping insertion in model container [2020-11-07 06:40:31,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:31" (1/1) ... [2020-11-07 06:40:31,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:40:31,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:40:32,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:32,138 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:40:32,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:32,173 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:40:32,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32 WrapperNode [2020-11-07 06:40:32,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:32,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:40:32,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:40:32,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:40:32,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (1/1) ... [2020-11-07 06:40:32,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:40:32,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:40:32,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:40:32,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:40:32,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (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 06:40:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:40:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:40:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:40:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:40:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:40:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:40:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:40:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:40:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:40:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:40:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:40:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:40:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:40:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:40:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:40:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:40:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:40:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:40:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:40:32,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:40:32,632 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 06:40:32,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:32 BoogieIcfgContainer [2020-11-07 06:40:32,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:40:32,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:40:32,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:40:32,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:40:32,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:40:31" (1/3) ... [2020-11-07 06:40:32,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f28adbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:32, skipping insertion in model container [2020-11-07 06:40:32,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:32" (2/3) ... [2020-11-07 06:40:32,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f28adbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:32, skipping insertion in model container [2020-11-07 06:40:32,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:32" (3/3) ... [2020-11-07 06:40:32,645 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-11-07 06:40:32,673 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:40:32,677 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:40:32,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:40:32,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:40:32,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:40:32,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:40:32,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:40:32,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:40:32,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:40:32,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:40:32,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:40:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-07 06:40:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 06:40:32,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:32,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:32,753 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash -511031943, now seen corresponding path program 1 times [2020-11-07 06:40:32,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:32,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785810507] [2020-11-07 06:40:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:33,260 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 06:40:33,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785810507] [2020-11-07 06:40:33,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:33,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:40:33,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805671148] [2020-11-07 06:40:33,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:40:33,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:33,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:40:33,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:40:33,288 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 9 states. [2020-11-07 06:40:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:33,909 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-11-07 06:40:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:40:33,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-11-07 06:40:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:33,919 INFO L225 Difference]: With dead ends: 77 [2020-11-07 06:40:33,920 INFO L226 Difference]: Without dead ends: 45 [2020-11-07 06:40:33,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:40:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-07 06:40:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-11-07 06:40:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-07 06:40:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-11-07 06:40:33,974 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 37 [2020-11-07 06:40:33,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:33,975 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-11-07 06:40:33,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:40:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-11-07 06:40:33,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 06:40:33,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:33,977 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:33,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:40:33,978 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -720145132, now seen corresponding path program 1 times [2020-11-07 06:40:33,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:33,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335285846] [2020-11-07 06:40:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:40:34,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335285846] [2020-11-07 06:40:34,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:34,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:40:34,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252037134] [2020-11-07 06:40:34,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:40:34,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:40:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:40:34,210 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 11 states. [2020-11-07 06:40:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:34,533 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-11-07 06:40:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:40:34,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-11-07 06:40:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:34,536 INFO L225 Difference]: With dead ends: 59 [2020-11-07 06:40:34,536 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 06:40:34,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:40:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 06:40:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-11-07 06:40:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-07 06:40:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-11-07 06:40:34,552 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2020-11-07 06:40:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:34,553 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-11-07 06:40:34,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:40:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-11-07 06:40:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 06:40:34,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:34,555 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:34,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:40:34,556 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:34,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1977400209, now seen corresponding path program 2 times [2020-11-07 06:40:34,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:34,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766348302] [2020-11-07 06:40:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 06:40:34,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766348302] [2020-11-07 06:40:34,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:34,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:40:34,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466941646] [2020-11-07 06:40:34,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:40:34,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:34,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:40:34,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:40:34,741 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 9 states. [2020-11-07 06:40:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:35,025 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-07 06:40:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:40:35,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-11-07 06:40:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:35,027 INFO L225 Difference]: With dead ends: 50 [2020-11-07 06:40:35,027 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:40:35,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:40:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:40:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:40:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:40:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:40:35,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-11-07 06:40:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:35,030 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:40:35,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:40:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:40:35,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:40:35,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:40:35,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:40:35,864 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,864 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,864 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,864 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,865 INFO L269 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,865 INFO L269 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,865 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,865 INFO L269 CegarLoopResult]: At program point L4-5(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,865 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,865 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,866 INFO L269 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-11-07 06:40:35,866 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:40:35,866 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)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-07 06:40:35,866 INFO L269 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,867 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:40:35,868 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:40:35,868 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-07 06:40:35,868 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-07 06:40:35,868 INFO L266 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:40:35,868 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:40:35,868 INFO L262 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2020-11-07 06:40:35,869 INFO L262 CegarLoopResult]: At program point mainEXIT(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2020-11-07 06:40:35,869 INFO L262 CegarLoopResult]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2020-11-07 06:40:35,869 INFO L262 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (or (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2020-11-07 06:40:35,869 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,870 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,870 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-11-07 06:40:35,870 INFO L262 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,870 INFO L262 CegarLoopResult]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-11-07 06:40:35,870 INFO L262 CegarLoopResult]: At program point mainFINAL(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2020-11-07 06:40:35,871 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2020-11-07 06:40:35,871 INFO L262 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (<= (+ main_~main__x~0 1) 0) (<= (+ main_~main__x~0 2) main_~main__y~0)) [2020-11-07 06:40:35,871 INFO L262 CegarLoopResult]: At program point L40(lines 40 66) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-11-07 06:40:35,871 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2020-11-07 06:40:35,871 INFO L262 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,872 INFO L262 CegarLoopResult]: At program point L32(lines 32 71) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,872 INFO L262 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2020-11-07 06:40:35,872 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-11-07 06:40:35,872 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= 51 main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,872 INFO L262 CegarLoopResult]: At program point L26(lines 26 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,872 INFO L262 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: false [2020-11-07 06:40:35,873 INFO L262 CegarLoopResult]: At program point L57-1(line 57) the Hoare annotation is: false [2020-11-07 06:40:35,873 INFO L262 CegarLoopResult]: At program point L55(lines 55 64) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 .cse1 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2020-11-07 06:40:35,873 INFO L262 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,873 INFO L262 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2020-11-07 06:40:35,873 INFO L262 CegarLoopResult]: At program point L20(lines 20 73) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-11-07 06:40:35,874 INFO L262 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (or (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2020-11-07 06:40:35,874 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-11-07 06:40:35,874 INFO L262 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-11-07 06:40:35,874 INFO L262 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2020-11-07 06:40:35,874 INFO L262 CegarLoopResult]: At program point L70(line 70) the Hoare annotation is: false [2020-11-07 06:40:35,875 INFO L262 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2020-11-07 06:40:35,875 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2020-11-07 06:40:35,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:40:35 BoogieIcfgContainer [2020-11-07 06:40:35,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:40:35,898 INFO L168 Benchmark]: Toolchain (without parser) took 3995.79 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 110.3 MB in the beginning and 92.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:35,898 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory was 127.1 MB in the beginning and 127.0 MB in the end (delta: 104.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:40:35,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.35 ms. Allocated memory is still 154.1 MB. Free memory was 109.7 MB in the beginning and 99.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:35,900 INFO L168 Benchmark]: Boogie Preprocessor took 47.88 ms. Allocated memory is still 154.1 MB. Free memory was 99.9 MB in the beginning and 137.1 MB in the end (delta: -37.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:35,901 INFO L168 Benchmark]: RCFGBuilder took 410.91 ms. Allocated memory is still 154.1 MB. Free memory was 137.1 MB in the beginning and 122.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:35,902 INFO L168 Benchmark]: TraceAbstraction took 3257.77 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 122.1 MB in the beginning and 92.2 MB in the end (delta: 29.9 MB). Peak memory consumption was 93.3 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:35,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory was 127.1 MB in the beginning and 127.0 MB in the end (delta: 104.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.35 ms. Allocated memory is still 154.1 MB. Free memory was 109.7 MB in the beginning and 99.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.88 ms. Allocated memory is still 154.1 MB. Free memory was 99.9 MB in the beginning and 137.1 MB in the end (delta: -37.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 410.91 ms. Allocated memory is still 154.1 MB. Free memory was 137.1 MB in the beginning and 122.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3257.77 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 122.1 MB in the beginning and 92.2 MB in the end (delta: 29.9 MB). Peak memory consumption was 93.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: !(__VERIFIER_assert__cond == 0) || ((__tmp_55_0 == \old(__tmp_55_0) && \old(__return_65) == __return_65) && main__x + 50 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 137 SDslu, 394 SDs, 0 SdLazy, 449 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 62 PreInvPairs, 92 NumberOfFragments, 446 HoareAnnotationTreeSize, 62 FomulaSimplifications, 179 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 54 FomulaSimplificationsInter, 768 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 18240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/12 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...