/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/ssh-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:13:45,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:13:45,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:13:45,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:13:45,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:13:45,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:13:45,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:13:45,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:13:45,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:13:45,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:13:45,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:13:45,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:13:45,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:13:45,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:13:45,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:13:45,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:13:45,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:13:45,725 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 22:13:45,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:13:45,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:13:45,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:13:45,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:13:45,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:13:45,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:13:45,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:13:45,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:13:45,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:13:45,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:13:45,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:13:45,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:13:45,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:13:45,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:13:45,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:13:45,747 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:13:45,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:13:45,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:13:45,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:13:45,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:13:45,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:13:45,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:13:45,748 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 22:13:46,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:13:46,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:13:46,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:13:46,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:13:46,047 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:13:46,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-22 22:13:46,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4febd8cb8/b397f17ae6e54f6a9b25d659658f5f91/FLAG3569587df [2020-08-22 22:13:46,580 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:13:46,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-22 22:13:46,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4febd8cb8/b397f17ae6e54f6a9b25d659658f5f91/FLAG3569587df [2020-08-22 22:13:46,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4febd8cb8/b397f17ae6e54f6a9b25d659658f5f91 [2020-08-22 22:13:46,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:13:46,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:13:46,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:13:46,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:13:46,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:13:46,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:13:46" (1/1) ... [2020-08-22 22:13:46,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562bf3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:46, skipping insertion in model container [2020-08-22 22:13:46,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:13:46" (1/1) ... [2020-08-22 22:13:46,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:13:47,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:13:47,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:13:47,218 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:13:47,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:13:47,383 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:13:47,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47 WrapperNode [2020-08-22 22:13:47,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:13:47,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:13:47,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:13:47,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:13:47,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (1/1) ... [2020-08-22 22:13:47,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:13:47,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:13:47,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:13:47,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:13:47,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (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 22:13:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:13:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:13:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:13:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:13:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 22:13:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:13:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 22:13:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:13:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:13:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:13:47,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:13:47,955 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 22:13:47,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:13:47 BoogieIcfgContainer [2020-08-22 22:13:47,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:13:47,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:13:47,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:13:47,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:13:47,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:13:46" (1/3) ... [2020-08-22 22:13:47,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410e6d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:13:47, skipping insertion in model container [2020-08-22 22:13:47,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:13:47" (2/3) ... [2020-08-22 22:13:47,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410e6d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:13:47, skipping insertion in model container [2020-08-22 22:13:47,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:13:47" (3/3) ... [2020-08-22 22:13:47,969 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-08-22 22:13:47,979 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:13:47,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:13:48,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:13:48,024 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:13:48,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:13:48,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:13:48,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:13:48,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:13:48,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:13:48,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:13:48,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:13:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-08-22 22:13:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 22:13:48,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:48,055 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] [2020-08-22 22:13:48,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash 766781838, now seen corresponding path program 1 times [2020-08-22 22:13:48,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:48,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775266065] [2020-08-22 22:13:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,226 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 22:13:48,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775266065] [2020-08-22 22:13:48,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:48,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:48,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254919107] [2020-08-22 22:13:48,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:48,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:48,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:48,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:48,257 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-08-22 22:13:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:48,432 INFO L93 Difference]: Finished difference Result 198 states and 286 transitions. [2020-08-22 22:13:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:48,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-22 22:13:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:48,453 INFO L225 Difference]: With dead ends: 198 [2020-08-22 22:13:48,453 INFO L226 Difference]: Without dead ends: 128 [2020-08-22 22:13:48,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-08-22 22:13:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-08-22 22:13:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 22:13:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 171 transitions. [2020-08-22 22:13:48,524 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 171 transitions. Word has length 26 [2020-08-22 22:13:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:48,524 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 171 transitions. [2020-08-22 22:13:48,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 171 transitions. [2020-08-22 22:13:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 22:13:48,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:48,527 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] [2020-08-22 22:13:48,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:13:48,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash -184994456, now seen corresponding path program 1 times [2020-08-22 22:13:48,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:48,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216942469] [2020-08-22 22:13:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,580 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 22:13:48,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216942469] [2020-08-22 22:13:48,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:48,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:48,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116015377] [2020-08-22 22:13:48,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:48,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:48,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:48,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:48,584 INFO L87 Difference]: Start difference. First operand 128 states and 171 transitions. Second operand 3 states. [2020-08-22 22:13:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:48,704 INFO L93 Difference]: Finished difference Result 233 states and 325 transitions. [2020-08-22 22:13:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:48,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-08-22 22:13:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:48,708 INFO L225 Difference]: With dead ends: 233 [2020-08-22 22:13:48,708 INFO L226 Difference]: Without dead ends: 177 [2020-08-22 22:13:48,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-22 22:13:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-08-22 22:13:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 22:13:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2020-08-22 22:13:48,741 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 32 [2020-08-22 22:13:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:48,742 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2020-08-22 22:13:48,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2020-08-22 22:13:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 22:13:48,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:48,745 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-22 22:13:48,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:13:48,745 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:48,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1532764802, now seen corresponding path program 1 times [2020-08-22 22:13:48,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:48,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449829184] [2020-08-22 22:13:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 22:13:48,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449829184] [2020-08-22 22:13:48,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:48,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:48,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100253413] [2020-08-22 22:13:48,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:48,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:48,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:48,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:48,860 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand 3 states. [2020-08-22 22:13:49,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:49,084 INFO L93 Difference]: Finished difference Result 375 states and 534 transitions. [2020-08-22 22:13:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:49,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-08-22 22:13:49,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:49,088 INFO L225 Difference]: With dead ends: 375 [2020-08-22 22:13:49,088 INFO L226 Difference]: Without dead ends: 221 [2020-08-22 22:13:49,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-08-22 22:13:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2020-08-22 22:13:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 22:13:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 276 transitions. [2020-08-22 22:13:49,118 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 276 transitions. Word has length 40 [2020-08-22 22:13:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:49,119 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 276 transitions. [2020-08-22 22:13:49,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 276 transitions. [2020-08-22 22:13:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 22:13:49,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:49,122 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-22 22:13:49,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:13:49,122 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:49,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1529904866, now seen corresponding path program 1 times [2020-08-22 22:13:49,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:49,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455116125] [2020-08-22 22:13:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 22:13:49,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455116125] [2020-08-22 22:13:49,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:49,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:49,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841629919] [2020-08-22 22:13:49,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:49,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:49,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:49,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,179 INFO L87 Difference]: Start difference. First operand 213 states and 276 transitions. Second operand 3 states. [2020-08-22 22:13:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:49,256 INFO L93 Difference]: Finished difference Result 403 states and 535 transitions. [2020-08-22 22:13:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:49,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-08-22 22:13:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:49,259 INFO L225 Difference]: With dead ends: 403 [2020-08-22 22:13:49,260 INFO L226 Difference]: Without dead ends: 274 [2020-08-22 22:13:49,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-08-22 22:13:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-08-22 22:13:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-22 22:13:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 358 transitions. [2020-08-22 22:13:49,293 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 358 transitions. Word has length 40 [2020-08-22 22:13:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:49,294 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 358 transitions. [2020-08-22 22:13:49,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 358 transitions. [2020-08-22 22:13:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 22:13:49,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:49,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:49,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:13:49,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1348776400, now seen corresponding path program 1 times [2020-08-22 22:13:49,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:49,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071626268] [2020-08-22 22:13:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 22:13:49,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071626268] [2020-08-22 22:13:49,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:49,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:49,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640465830] [2020-08-22 22:13:49,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:49,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:49,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:49,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,357 INFO L87 Difference]: Start difference. First operand 274 states and 358 transitions. Second operand 3 states. [2020-08-22 22:13:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:49,449 INFO L93 Difference]: Finished difference Result 527 states and 700 transitions. [2020-08-22 22:13:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:49,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-08-22 22:13:49,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:49,452 INFO L225 Difference]: With dead ends: 527 [2020-08-22 22:13:49,453 INFO L226 Difference]: Without dead ends: 337 [2020-08-22 22:13:49,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-22 22:13:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2020-08-22 22:13:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-22 22:13:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 442 transitions. [2020-08-22 22:13:49,487 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 442 transitions. Word has length 70 [2020-08-22 22:13:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:49,487 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 442 transitions. [2020-08-22 22:13:49,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 442 transitions. [2020-08-22 22:13:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 22:13:49,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:49,491 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:49,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:13:49,492 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1264034378, now seen corresponding path program 1 times [2020-08-22 22:13:49,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:49,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264572305] [2020-08-22 22:13:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 22:13:49,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264572305] [2020-08-22 22:13:49,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:49,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:49,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979377985] [2020-08-22 22:13:49,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:49,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:49,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,581 INFO L87 Difference]: Start difference. First operand 335 states and 442 transitions. Second operand 3 states. [2020-08-22 22:13:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:49,736 INFO L93 Difference]: Finished difference Result 637 states and 866 transitions. [2020-08-22 22:13:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:49,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-08-22 22:13:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:49,740 INFO L225 Difference]: With dead ends: 637 [2020-08-22 22:13:49,740 INFO L226 Difference]: Without dead ends: 243 [2020-08-22 22:13:49,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-08-22 22:13:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2020-08-22 22:13:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 22:13:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 299 transitions. [2020-08-22 22:13:49,768 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 299 transitions. Word has length 74 [2020-08-22 22:13:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:49,770 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 299 transitions. [2020-08-22 22:13:49,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 299 transitions. [2020-08-22 22:13:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-22 22:13:49,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:13:49,778 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:13:49,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:13:49,785 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:13:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:13:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1725408203, now seen corresponding path program 1 times [2020-08-22 22:13:49,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:13:49,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622684527] [2020-08-22 22:13:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:13:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:13:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:13:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 22:13:49,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622684527] [2020-08-22 22:13:49,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:13:49,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:13:49,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274144173] [2020-08-22 22:13:49,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:13:49,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:13:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:13:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,931 INFO L87 Difference]: Start difference. First operand 240 states and 299 transitions. Second operand 3 states. [2020-08-22 22:13:49,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:13:49,970 INFO L93 Difference]: Finished difference Result 365 states and 436 transitions. [2020-08-22 22:13:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:13:49,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-08-22 22:13:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:13:49,972 INFO L225 Difference]: With dead ends: 365 [2020-08-22 22:13:49,972 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:13:49,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:13:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:13:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:13:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:13:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:13:49,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2020-08-22 22:13:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:13:49,974 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:13:49,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:13:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:13:49,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:13:49,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:13:49,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:13:50,919 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:13:50,920 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:13:50,921 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:13:50,921 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:13:50,921 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:13:50,921 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:13:50,921 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 8 217) the Hoare annotation is: true [2020-08-22 22:13:50,922 INFO L264 CegarLoopResult]: At program point L151-1(lines 74 183) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (not (= main_~s__hit~0 0))) (and .cse0 (<= main_~blastFlag~0 2)))) [2020-08-22 22:13:50,924 INFO L264 CegarLoopResult]: At program point L52(lines 52 193) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,924 INFO L264 CegarLoopResult]: At program point L85-1(lines 74 183) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,924 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-08-22 22:13:50,924 INFO L264 CegarLoopResult]: At program point L135(lines 135 139) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,924 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-22 22:13:50,925 INFO L264 CegarLoopResult]: At program point L36(lines 36 201) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,925 INFO L264 CegarLoopResult]: At program point L152(line 152) the Hoare annotation is: (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))) [2020-08-22 22:13:50,925 INFO L264 CegarLoopResult]: At program point L86(line 86) the Hoare annotation is: (<= main_~blastFlag~0 1) [2020-08-22 22:13:50,925 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,925 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-08-22 22:13:50,925 INFO L264 CegarLoopResult]: At program point L136(line 136) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,926 INFO L264 CegarLoopResult]: At program point L169-1(lines 74 183) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-22 22:13:50,926 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,926 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,926 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 8 217) the Hoare annotation is: true [2020-08-22 22:13:50,926 INFO L264 CegarLoopResult]: At program point L170(line 170) the Hoare annotation is: false [2020-08-22 22:13:50,926 INFO L264 CegarLoopResult]: At program point L138(line 138) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,927 INFO L264 CegarLoopResult]: At program point L105(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,928 INFO L264 CegarLoopResult]: At program point L72(lines 72 183) the Hoare annotation is: (or (<= main_~blastFlag~0 2) (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3))) [2020-08-22 22:13:50,928 INFO L264 CegarLoopResult]: At program point L89(line 89) the Hoare annotation is: (or (and (<= main_~blastFlag~0 2) (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 1)) [2020-08-22 22:13:50,928 INFO L264 CegarLoopResult]: At program point L56(lines 56 191) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,928 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,928 INFO L264 CegarLoopResult]: At program point L172(lines 172 174) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L106(lines 106 110) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L40(lines 40 199) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L107(line 107) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,929 INFO L264 CegarLoopResult]: At program point L157(line 157) the Hoare annotation is: (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 2)) [2020-08-22 22:13:50,930 INFO L264 CegarLoopResult]: At program point L91(line 91) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,930 INFO L264 CegarLoopResult]: At program point L125(line 125) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,930 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-08-22 22:13:50,930 INFO L271 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: true [2020-08-22 22:13:50,930 INFO L271 CegarLoopResult]: At program point L10-2(line 10) the Hoare annotation is: true [2020-08-22 22:13:50,930 INFO L264 CegarLoopResult]: At program point L60(lines 60 189) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,930 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,930 INFO L264 CegarLoopResult]: At program point L44(lines 44 197) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,930 INFO L271 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-08-22 22:13:50,931 INFO L271 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: true [2020-08-22 22:13:50,931 INFO L271 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: true [2020-08-22 22:13:50,931 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,931 INFO L264 CegarLoopResult]: At program point L177(line 177) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0)) .cse0) (and (<= main_~blastFlag~0 1) .cse0))) [2020-08-22 22:13:50,931 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,931 INFO L264 CegarLoopResult]: At program point L78-1(lines 78 80) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,931 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-08-22 22:13:50,931 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-08-22 22:13:50,932 INFO L271 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-08-22 22:13:50,932 INFO L264 CegarLoopResult]: At program point L29(lines 29 204) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,932 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,932 INFO L264 CegarLoopResult]: At program point L79(line 79) the Hoare annotation is: (<= main_~blastFlag~0 0) [2020-08-22 22:13:50,932 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-08-22 22:13:50,932 INFO L271 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: true [2020-08-22 22:13:50,932 INFO L271 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: true [2020-08-22 22:13:50,932 INFO L264 CegarLoopResult]: At program point L162-1(lines 162 164) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-22 22:13:50,932 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) the Hoare annotation is: false [2020-08-22 22:13:50,932 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,933 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-08-22 22:13:50,934 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 22:13:50,934 INFO L264 CegarLoopResult]: At program point L163(line 163) the Hoare annotation is: (and (<= main_~blastFlag~0 2) (<= 8656 main_~s__state~0)) [2020-08-22 22:13:50,934 INFO L264 CegarLoopResult]: At program point L64(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,934 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-08-22 22:13:50,934 INFO L264 CegarLoopResult]: At program point L114(lines 114 118) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,935 INFO L264 CegarLoopResult]: At program point L48(lines 48 195) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,935 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 22:13:50,935 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))))) [2020-08-22 22:13:50,935 INFO L264 CegarLoopResult]: At program point L32(lines 32 203) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-22 22:13:50,935 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,935 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 22:13:50,936 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,937 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-08-22 22:13:50,937 INFO L264 CegarLoopResult]: At program point L216(line 216) the Hoare annotation is: false [2020-08-22 22:13:50,937 INFO L264 CegarLoopResult]: At program point L117(line 117) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,937 INFO L264 CegarLoopResult]: At program point L134(line 134) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,937 INFO L264 CegarLoopResult]: At program point L134-1(line 134) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-22 22:13:50,938 INFO L264 CegarLoopResult]: At program point L68(lines 68 185) the Hoare annotation is: (or (<= main_~blastFlag~0 2) (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3))) [2020-08-22 22:13:50,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:13:50 BoogieIcfgContainer [2020-08-22 22:13:50,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:13:50,988 INFO L168 Benchmark]: Toolchain (without parser) took 4010.40 ms. Allocated memory was 138.9 MB in the beginning and 246.9 MB in the end (delta: 108.0 MB). Free memory was 102.8 MB in the beginning and 194.0 MB in the end (delta: -91.2 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:13:50,990 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:13:50,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.08 ms. Allocated memory was 138.9 MB in the beginning and 205.5 MB in the end (delta: 66.6 MB). Free memory was 102.3 MB in the beginning and 184.4 MB in the end (delta: -82.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:13:50,992 INFO L168 Benchmark]: Boogie Preprocessor took 67.10 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 182.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:13:50,994 INFO L168 Benchmark]: RCFGBuilder took 507.79 ms. Allocated memory is still 205.5 MB. Free memory was 182.7 MB in the beginning and 160.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:13:50,995 INFO L168 Benchmark]: TraceAbstraction took 3023.10 ms. Allocated memory was 205.5 MB in the beginning and 246.9 MB in the end (delta: 41.4 MB). Free memory was 160.2 MB in the beginning and 194.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:13:51,006 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 407.08 ms. Allocated memory was 138.9 MB in the beginning and 205.5 MB in the end (delta: 66.6 MB). Free memory was 102.3 MB in the beginning and 184.4 MB in the end (delta: -82.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.10 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 182.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.79 ms. Allocated memory is still 205.5 MB. Free memory was 182.7 MB in the beginning and 160.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3023.10 ms. Allocated memory was 205.5 MB in the beginning and 246.9 MB in the end (delta: 41.4 MB). Free memory was 160.2 MB in the beginning and 194.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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: 32]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (8640 <= s__state && blastFlag <= 2) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: blastFlag <= 3 && 8656 <= s__state - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((blastFlag <= 3 && 8656 <= s__state) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0))) || blastFlag <= 2 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: blastFlag <= 3 && 8656 <= s__state - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: blastFlag <= 2 - ProcedureContractResult [Line: 8]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 696 SDtfs, 313 SDslu, 519 SDs, 0 SdLazy, 210 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 85 LocationsWithAnnotation, 85 PreInvPairs, 407 NumberOfFragments, 525 HoareAnnotationTreeSize, 85 FomulaSimplifications, 3335 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 85 FomulaSimplificationsInter, 261 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 44169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 193/193 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...