/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:02:40,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:02:40,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:02:40,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:02:40,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:02:40,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:02:40,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:02:40,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:02:40,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:02:40,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:02:40,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:02:40,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:02:40,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:02:40,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:02:40,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:02:40,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:02:40,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:02:40,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:02:40,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:02:40,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:02:40,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:02:40,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:02:40,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:02:40,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:02:40,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:02:40,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:02:40,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:02:40,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:02:40,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:02:40,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:02:40,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:02:40,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:02:40,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:02:40,728 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:02:40,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:02:40,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:02:40,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:02:40,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:02:40,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:02:40,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:02:40,730 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-08-22 23:02:41,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:02:41,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:02:41,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:02:41,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:02:41,072 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:02:41,073 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-08-22 23:02:41,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d6b62b5/681ce80216554d6fa290ef3e071f0258/FLAG3d6224735 [2020-08-22 23:02:41,566 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:02:41,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-08-22 23:02:41,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d6b62b5/681ce80216554d6fa290ef3e071f0258/FLAG3d6224735 [2020-08-22 23:02:41,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d6b62b5/681ce80216554d6fa290ef3e071f0258 [2020-08-22 23:02:41,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:02:41,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:02:41,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:02:41,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:02:41,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:02:41,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9349c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41, skipping insertion in model container [2020-08-22 23:02:41,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:02:41,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:02:41,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:02:41,831 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:02:41,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:02:41,861 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:02:41,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41 WrapperNode [2020-08-22 23:02:41,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:02:41,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:02:41,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:02:41,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:02:41,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (1/1) ... [2020-08-22 23:02:41,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:02:41,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:02:41,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:02:41,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:02:41,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (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 [2020-08-22 23:02:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:02:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:02:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:02:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:02:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:02:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:02:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:02:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:02:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:02:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:02:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:02:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:02:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:02:42,426 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:02:42,426 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:02:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:02:42 BoogieIcfgContainer [2020-08-22 23:02:42,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:02:42,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:02:42,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:02:42,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:02:42,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:02:41" (1/3) ... [2020-08-22 23:02:42,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8a390f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:02:42, skipping insertion in model container [2020-08-22 23:02:42,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:41" (2/3) ... [2020-08-22 23:02:42,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8a390f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:02:42, skipping insertion in model container [2020-08-22 23:02:42,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:02:42" (3/3) ... [2020-08-22 23:02:42,438 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-08-22 23:02:42,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:02:42,456 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:02:42,470 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:02:42,492 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:02:42,492 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:02:42,492 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:02:42,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:02:42,493 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:02:42,493 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:02:42,493 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:02:42,493 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:02:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-08-22 23:02:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 23:02:42,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:42,521 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] [2020-08-22 23:02:42,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1281286412, now seen corresponding path program 1 times [2020-08-22 23:02:42,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:42,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841167881] [2020-08-22 23:02:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:42,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841167881] [2020-08-22 23:02:42,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:42,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 23:02:42,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808563811] [2020-08-22 23:02:42,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:02:42,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:42,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:02:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:02:42,821 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 7 states. [2020-08-22 23:02:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:43,013 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-08-22 23:02:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:02:43,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-08-22 23:02:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:43,025 INFO L225 Difference]: With dead ends: 77 [2020-08-22 23:02:43,026 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 23:02:43,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:02:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 23:02:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-08-22 23:02:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-22 23:02:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-08-22 23:02:43,078 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 37 [2020-08-22 23:02:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:43,078 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-08-22 23:02:43,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:02:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-08-22 23:02:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 23:02:43,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:43,081 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] [2020-08-22 23:02:43,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:02:43,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash -594029260, now seen corresponding path program 1 times [2020-08-22 23:02:43,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:43,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531143174] [2020-08-22 23:02:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 23:02:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:43,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531143174] [2020-08-22 23:02:43,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:43,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:02:43,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848887766] [2020-08-22 23:02:43,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:02:43,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:02:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:02:43,219 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 8 states. [2020-08-22 23:02:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:43,382 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-08-22 23:02:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 23:02:43,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-08-22 23:02:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:43,386 INFO L225 Difference]: With dead ends: 59 [2020-08-22 23:02:43,386 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 23:02:43,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 23:02:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 23:02:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-22 23:02:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 23:02:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-08-22 23:02:43,420 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 42 [2020-08-22 23:02:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:43,420 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-08-22 23:02:43,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:02:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-08-22 23:02:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 23:02:43,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:43,424 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1] [2020-08-22 23:02:43,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:02:43,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1318797830, now seen corresponding path program 1 times [2020-08-22 23:02:43,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:43,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384709184] [2020-08-22 23:02:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 23:02:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 23:02:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 23:02:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 23:02:43,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384709184] [2020-08-22 23:02:43,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:02:43,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 23:02:43,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324033057] [2020-08-22 23:02:43,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 23:02:43,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 23:02:43,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-22 23:02:43,640 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2020-08-22 23:02:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:43,935 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-08-22 23:02:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 23:02:43,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 23:02:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:43,937 INFO L225 Difference]: With dead ends: 57 [2020-08-22 23:02:43,937 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:02:43,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-08-22 23:02:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:02:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:02:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:02:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:02:43,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-08-22 23:02:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:43,940 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:02:43,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 23:02:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:02:43,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:02:43,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:02:43,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:02:44,207 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:02:44,207 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:02:44,208 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:02:44,208 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:02:44,208 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:02:44,208 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:02:44,208 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:02:44,209 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:02:44,209 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 23:02:44,209 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 23:02:44,209 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:02:44,209 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-08-22 23:02:44,210 INFO L264 CegarLoopResult]: At program point L27-1(lines 14 45) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-08-22 23:02:44,210 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 45) the Hoare annotation is: true [2020-08-22 23:02:44,210 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-22 23:02:44,210 INFO L271 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-08-22 23:02:44,210 INFO L271 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: true [2020-08-22 23:02:44,211 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-08-22 23:02:44,211 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-22 23:02:44,211 INFO L264 CegarLoopResult]: At program point L36(lines 36 37) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2020-08-22 23:02:44,211 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-08-22 23:02:44,212 INFO L264 CegarLoopResult]: At program point L28(lines 14 45) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-08-22 23:02:44,212 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-08-22 23:02:44,212 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-08-22 23:02:44,212 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-08-22 23:02:44,212 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 23:02:44,213 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (<= main_~p~0 0) (<= 1 (+ main_~leader_len~0 main_~p~0))) [2020-08-22 23:02:44,213 INFO L264 CegarLoopResult]: At program point L29(lines 14 45) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-08-22 23:02:44,213 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-08-22 23:02:44,213 INFO L271 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-08-22 23:02:44,214 INFO L271 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-08-22 23:02:44,214 INFO L271 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-08-22 23:02:44,214 INFO L271 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: true [2020-08-22 23:02:44,214 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-08-22 23:02:44,214 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) main_~bufsize_0~0)) [2020-08-22 23:02:44,215 INFO L264 CegarLoopResult]: At program point L38-3(lines 38 42) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0) 2))) [2020-08-22 23:02:44,215 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= main_~p~0 0) (<= 1 (+ main_~leader_len~0 main_~p~0))) [2020-08-22 23:02:44,215 INFO L264 CegarLoopResult]: At program point L38-4(line 38) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~ielen~0) main_~p~0))) (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= .cse0 (+ main_~bufsize_0~0 (* 2 main_~i~0) 2)) (<= .cse0 (+ main_~bufsize_0~0 (* 2 |main_#t~post3|) 2)))) [2020-08-22 23:02:44,216 INFO L264 CegarLoopResult]: At program point L38-5(line 38) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~ielen~0) main_~p~0))) (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= .cse0 (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= .cse0 (+ main_~bufsize_0~0 (* 2 |main_#t~post3|) 2)))) [2020-08-22 23:02:44,216 INFO L264 CegarLoopResult]: At program point L38-6(lines 38 42) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2020-08-22 23:02:44,216 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-08-22 23:02:44,216 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-08-22 23:02:44,217 INFO L271 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-08-22 23:02:44,217 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-08-22 23:02:44,217 INFO L271 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-08-22 23:02:44,217 INFO L271 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: true [2020-08-22 23:02:44,217 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-08-22 23:02:44,218 INFO L271 CegarLoopResult]: At program point L43(lines 13 45) the Hoare annotation is: true [2020-08-22 23:02:44,218 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-22 23:02:44,218 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-22 23:02:44,219 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= (+ main_~leader_len~0 main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= main_~p~0 0) (<= 1 (+ main_~leader_len~0 main_~p~0))) [2020-08-22 23:02:44,219 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 23:02:44,219 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:02:44,219 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:02:44,220 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:02:44,220 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:02:44,220 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:02:44,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:02:44 BoogieIcfgContainer [2020-08-22 23:02:44,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:02:44,246 INFO L168 Benchmark]: Toolchain (without parser) took 2642.93 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 105.0 MB in the beginning and 99.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 97.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:44,247 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 23:02:44,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.71 ms. Allocated memory is still 141.0 MB. Free memory was 104.7 MB in the beginning and 95.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:44,250 INFO L168 Benchmark]: Boogie Preprocessor took 107.36 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 95.1 MB in the beginning and 182.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:44,251 INFO L168 Benchmark]: RCFGBuilder took 459.80 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 166.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:44,252 INFO L168 Benchmark]: TraceAbstraction took 1812.22 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 165.8 MB in the beginning and 99.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 94.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:44,256 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.71 ms. Allocated memory is still 141.0 MB. Free memory was 104.7 MB in the beginning and 95.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.36 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 95.1 MB in the beginning and 182.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.80 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 166.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1812.22 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 165.8 MB in the beginning and 99.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 94.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 57 SDslu, 720 SDs, 0 SdLazy, 293 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 82 PreInvPairs, 109 NumberOfFragments, 311 HoareAnnotationTreeSize, 82 FomulaSimplifications, 187 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 52 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 15406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 21/23 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...