/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/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:40:42,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:40:42,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:40:42,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:40:42,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:40:42,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:40:42,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:40:42,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:40:42,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:40:42,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:40:42,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:40:42,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:40:42,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:40:42,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:40:42,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:40:42,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:40:42,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:40:42,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:40:42,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:40:42,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:40:42,483 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 06:40:42,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:40:42,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:40:42,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:40:42,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:40:42,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:40:42,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:40:42,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:40:42,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:40:42,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:40:42,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:40:42,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:40:42,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:40:42,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:40:42,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:40:42,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:40:42,521 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:40:42,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:40:42,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:40:42,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:40:42,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:40:42,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:40:42,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:40:42,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:40:42,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:40:42,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:40:42,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:40:42,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:40:42,977 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:40:42,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-11-07 06:40:43,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad670d6f/1c5287fd962449c5aada02f6978e3fb1/FLAG97c80c666 [2020-11-07 06:40:43,810 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:40:43,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-11-07 06:40:43,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad670d6f/1c5287fd962449c5aada02f6978e3fb1/FLAG97c80c666 [2020-11-07 06:40:44,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ad670d6f/1c5287fd962449c5aada02f6978e3fb1 [2020-11-07 06:40:44,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:40:44,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:40:44,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:44,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:40:44,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:40:44,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29916ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44, skipping insertion in model container [2020-11-07 06:40:44,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:40:44,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:40:44,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:44,522 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:40:44,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:44,576 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:40:44,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44 WrapperNode [2020-11-07 06:40:44,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:44,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:40:44,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:40:44,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:40:44,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (1/1) ... [2020-11-07 06:40:44,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:40:44,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:40:44,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:40:44,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:40:44,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (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 06:40:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:40:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:40:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:40:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:40:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:40:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:40:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:40:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:40:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:40:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:40:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:40:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:40:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:40:45,186 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:40:45,186 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:40:45,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:45 BoogieIcfgContainer [2020-11-07 06:40:45,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:40:45,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:40:45,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:40:45,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:40:45,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:40:44" (1/3) ... [2020-11-07 06:40:45,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2569efba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:45, skipping insertion in model container [2020-11-07 06:40:45,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:44" (2/3) ... [2020-11-07 06:40:45,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2569efba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:45, skipping insertion in model container [2020-11-07 06:40:45,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:45" (3/3) ... [2020-11-07 06:40:45,226 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-11-07 06:40:45,242 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:40:45,247 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:40:45,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:40:45,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:40:45,288 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:40:45,288 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:40:45,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:40:45,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:40:45,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:40:45,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:40:45,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:40:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-07 06:40:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 06:40:45,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:45,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:45,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:45,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1351678347, now seen corresponding path program 1 times [2020-11-07 06:40:45,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:45,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668677955] [2020-11-07 06:40:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,747 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 06:40:45,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668677955] [2020-11-07 06:40:45,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:45,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:40:45,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580530165] [2020-11-07 06:40:45,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:40:45,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:40:45,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:40:45,805 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-11-07 06:40:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:45,906 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-11-07 06:40:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:40:45,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-07 06:40:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:45,919 INFO L225 Difference]: With dead ends: 64 [2020-11-07 06:40:45,919 INFO L226 Difference]: Without dead ends: 37 [2020-11-07 06:40:45,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:40:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-07 06:40:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-07 06:40:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-07 06:40:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-11-07 06:40:45,981 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-11-07 06:40:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:45,982 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-11-07 06:40:45,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:40:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-11-07 06:40:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 06:40:45,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:45,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:45,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:40:45,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1103444181, now seen corresponding path program 1 times [2020-11-07 06:40:45,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:45,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167712811] [2020-11-07 06:40:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:46,340 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 06:40:46,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167712811] [2020-11-07 06:40:46,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:46,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:40:46,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437348021] [2020-11-07 06:40:46,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:40:46,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:46,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:40:46,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:40:46,345 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-11-07 06:40:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:46,813 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-11-07 06:40:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:40:46,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-11-07 06:40:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:46,815 INFO L225 Difference]: With dead ends: 48 [2020-11-07 06:40:46,816 INFO L226 Difference]: Without dead ends: 40 [2020-11-07 06:40:46,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:40:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-07 06:40:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-11-07 06:40:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-07 06:40:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-11-07 06:40:46,831 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 30 [2020-11-07 06:40:46,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:46,832 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-11-07 06:40:46,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:40:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-11-07 06:40:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 06:40:46,833 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:46,833 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 06:40:46,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:40:46,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash 673644348, now seen corresponding path program 1 times [2020-11-07 06:40:46,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:46,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725752554] [2020-11-07 06:40:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:40:47,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725752554] [2020-11-07 06:40:47,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:47,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-07 06:40:47,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929867006] [2020-11-07 06:40:47,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 06:40:47,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 06:40:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:40:47,202 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 13 states. [2020-11-07 06:40:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:48,046 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-11-07 06:40:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 06:40:48,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-11-07 06:40:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:48,047 INFO L225 Difference]: With dead ends: 40 [2020-11-07 06:40:48,047 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:40:48,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-11-07 06:40:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:40:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:40:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:40:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:40:48,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-11-07 06:40:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:48,052 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:40:48,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 06:40:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:40:48,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:40:48,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:40:48,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:40:48,715 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-11-07 06:40:48,866 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,867 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,867 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,868 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,868 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,868 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,868 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,868 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,868 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,869 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,869 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,869 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,869 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 06:40:48,869 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:40:48,870 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,870 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,870 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,870 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,870 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:40:48,870 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 06:40:48,871 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 06:40:48,871 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:40:48,872 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:40:48,873 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:40:48,873 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-07 06:40:48,873 INFO L262 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse2 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse0 .cse2) (<= .cse1 .cse0) (<= .cse2 .cse0))) [2020-11-07 06:40:48,874 INFO L262 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse3 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~i~0 main_~y~0)) (.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse3 .cse2) (<= .cse1 .cse0))) [2020-11-07 06:40:48,874 INFO L269 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-11-07 06:40:48,874 INFO L262 CegarLoopResult]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-07 06:40:48,875 INFO L262 CegarLoopResult]: At program point L31-3(lines 24 39) the Hoare annotation is: (let ((.cse2 (+ main_~i~0 main_~y~0)) (.cse6 (+ main_~x~0 main_~j~0))) (let ((.cse4 (<= .cse2 .cse6)) (.cse0 (<= .cse6 .cse2)) (.cse1 (< 0 (+ main_~y~0 1))) (.cse3 (<= main_~y~0 0))) (or (and (or .cse0 .cse1) (or (<= .cse2 main_~j~0) .cse3) (or (<= main_~j~0 .cse2) .cse1) (or .cse4 .cse3) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) (let ((.cse5 (+ main_~y~0 main_~i~0))) (and .cse4 .cse0 (or (<= main_~j~0 .cse5) .cse1) (or .cse3 (<= .cse5 main_~j~0))))))) [2020-11-07 06:40:48,875 INFO L269 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-11-07 06:40:48,875 INFO L269 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-11-07 06:40:48,875 INFO L269 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-07 06:40:48,875 INFO L269 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-11-07 06:40:48,876 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 39) the Hoare annotation is: true [2020-11-07 06:40:48,876 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 39) the Hoare annotation is: true [2020-11-07 06:40:48,876 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= main_~y~0 0)) (.cse1 (< 0 (+ main_~y~0 1)))) (or (and .cse0 (<= main_~i~0 main_~x~0) .cse1 (<= main_~x~0 main_~i~0)) (let ((.cse3 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~i~0 main_~y~0))) (and (<= .cse2 .cse3) (<= .cse3 .cse2) .cse0 .cse1)))) [2020-11-07 06:40:48,876 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-11-07 06:40:48,876 INFO L262 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~j~0 |main_#t~post5|))) (and (<= .cse0 .cse1) (<= .cse2 .cse0) (<= .cse1 .cse0) (<= .cse0 .cse2))) [2020-11-07 06:40:48,877 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2020-11-07 06:40:48,877 INFO L262 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~j~0 |main_#t~post5|)) (.cse1 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse1) (<= .cse1 .cse0) (<= .cse1 .cse2))) [2020-11-07 06:40:48,877 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2020-11-07 06:40:48,877 INFO L269 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-11-07 06:40:48,878 INFO L269 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-11-07 06:40:48,879 INFO L269 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-11-07 06:40:48,879 INFO L269 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-11-07 06:40:48,879 INFO L269 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-11-07 06:40:48,879 INFO L269 CegarLoopResult]: At program point L35(lines 35 37) the Hoare annotation is: true [2020-11-07 06:40:48,880 INFO L269 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-07 06:40:48,880 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 06:40:48,880 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-11-07 06:40:48,880 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:40:48,880 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:40:48,880 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:40:48,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:40:48 BoogieIcfgContainer [2020-11-07 06:40:48,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:40:48,911 INFO L168 Benchmark]: Toolchain (without parser) took 4724.30 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 127.2 MB in the beginning and 61.2 MB in the end (delta: 66.1 MB). Peak memory consumption was 101.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:48,912 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:40:48,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:48,914 INFO L168 Benchmark]: Boogie Preprocessor took 66.49 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:48,915 INFO L168 Benchmark]: RCFGBuilder took 541.95 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 99.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:48,916 INFO L168 Benchmark]: TraceAbstraction took 3713.71 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 99.2 MB in the beginning and 61.2 MB in the end (delta: 38.0 MB). Peak memory consumption was 74.2 MB. Max. memory is 8.0 GB. [2020-11-07 06:40:48,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 385.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.49 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.95 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 99.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3713.71 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 99.2 MB in the beginning and 61.2 MB in the end (delta: 38.0 MB). Peak memory consumption was 74.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: i + y <= x + j && x + j <= i + y - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 106 SDslu, 181 SDs, 0 SdLazy, 315 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 73 PreInvPairs, 89 NumberOfFragments, 378 HoareAnnotationTreeSize, 73 FomulaSimplifications, 500 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 49 FomulaSimplificationsInter, 741 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 13498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...