/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:15:46,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:15:46,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:15:46,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:15:46,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:15:46,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:15:46,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:15:46,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:15:46,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:15:46,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:15:46,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:15:46,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:15:46,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:15:46,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:15:46,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:15:46,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:15:46,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:15:46,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:15:46,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:15:46,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:15:46,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:15:46,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:15:46,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:15:46,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:15:46,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:15:46,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:15:46,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:15:46,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:15:46,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:15:46,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:15:46,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:15:46,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:15:46,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:15:46,394 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:15:46,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:15:46,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:15:46,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:15:46,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:15:46,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:15:46,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:15:46,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:15:46,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:15:46,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:15:46,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:15:46,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:15:46,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:15:46,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:15:46,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:15:46,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:15:46,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:15:46,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:15:46,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:15:46,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:15:46,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:15:46,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:15:46,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:15:46,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:15:46,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:15:46,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:15:46,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:15:46,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:15:46,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:15:46,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:15:46,699 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:15:46,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-07-07 11:15:46,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae9bd9e/32f66dfb105c4b4da79b3b6bcab03f4e/FLAG827f76ef5 [2020-07-07 11:15:47,168 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:15:47,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2020-07-07 11:15:47,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae9bd9e/32f66dfb105c4b4da79b3b6bcab03f4e/FLAG827f76ef5 [2020-07-07 11:15:47,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6ae9bd9e/32f66dfb105c4b4da79b3b6bcab03f4e [2020-07-07 11:15:47,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:15:47,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:15:47,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:47,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:15:47,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:15:47,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382bf3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47, skipping insertion in model container [2020-07-07 11:15:47,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:15:47,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:15:47,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:47,742 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:15:47,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:47,780 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:15:47,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47 WrapperNode [2020-07-07 11:15:47,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:47,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:15:47,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:15:47,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:15:47,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (1/1) ... [2020-07-07 11:15:47,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:15:47,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:15:47,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:15:47,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:15:47,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (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 [2020-07-07 11:15:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:15:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:15:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:15:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:15:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:15:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:15:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:15:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:15:48,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:15:48,274 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:15:48,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:48 BoogieIcfgContainer [2020-07-07 11:15:48,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:15:48,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:15:48,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:15:48,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:15:48,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:15:47" (1/3) ... [2020-07-07 11:15:48,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a749e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:48, skipping insertion in model container [2020-07-07 11:15:48,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:47" (2/3) ... [2020-07-07 11:15:48,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a749e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:48, skipping insertion in model container [2020-07-07 11:15:48,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:48" (3/3) ... [2020-07-07 11:15:48,291 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-07-07 11:15:48,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:15:48,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:15:48,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:15:48,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:15:48,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:15:48,365 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:15:48,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:15:48,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:15:48,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:15:48,365 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:15:48,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:15:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-07 11:15:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:15:48,398 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:48,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:48,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-07-07 11:15:48,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:48,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993022065] [2020-07-07 11:15:48,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:48,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993022065] [2020-07-07 11:15:48,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:48,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:48,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559441387] [2020-07-07 11:15:48,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:48,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:48,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:48,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:48,709 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-07-07 11:15:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:48,758 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-07-07 11:15:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:48,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-07 11:15:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:48,773 INFO L225 Difference]: With dead ends: 57 [2020-07-07 11:15:48,774 INFO L226 Difference]: Without dead ends: 42 [2020-07-07 11:15:48,780 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 [2020-07-07 11:15:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-07 11:15:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-07-07 11:15:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 11:15:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-07-07 11:15:48,823 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-07-07 11:15:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:48,824 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-07-07 11:15:48,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-07-07 11:15:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:15:48,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:48,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:48,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:15:48,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:48,828 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-07-07 11:15:48,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:48,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345933649] [2020-07-07 11:15:48,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:48,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345933649] [2020-07-07 11:15:48,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:48,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:48,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032698869] [2020-07-07 11:15:48,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:48,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:48,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:48,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:48,911 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-07-07 11:15:48,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:48,979 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-07-07 11:15:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:48,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-07 11:15:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:48,982 INFO L225 Difference]: With dead ends: 67 [2020-07-07 11:15:48,984 INFO L226 Difference]: Without dead ends: 42 [2020-07-07 11:15:48,985 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 [2020-07-07 11:15:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-07 11:15:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-07-07 11:15:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-07 11:15:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-07-07 11:15:49,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-07-07 11:15:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,004 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-07-07 11:15:49,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-07-07 11:15:49,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:15:49,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:15:49,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-07-07 11:15:49,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369197011] [2020-07-07 11:15:49,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369197011] [2020-07-07 11:15:49,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588896281] [2020-07-07 11:15:49,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,073 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-07-07 11:15:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,101 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-07-07 11:15:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-07 11:15:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,103 INFO L225 Difference]: With dead ends: 63 [2020-07-07 11:15:49,103 INFO L226 Difference]: Without dead ends: 45 [2020-07-07 11:15:49,104 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 [2020-07-07 11:15:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-07 11:15:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-07-07 11:15:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-07 11:15:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-07-07 11:15:49,112 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-07-07 11:15:49,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,112 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-07-07 11:15:49,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-07-07 11:15:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:15:49,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:15:49,114 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-07-07 11:15:49,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571491533] [2020-07-07 11:15:49,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571491533] [2020-07-07 11:15:49,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825941636] [2020-07-07 11:15:49,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,155 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-07-07 11:15:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,176 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-07-07 11:15:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-07 11:15:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,179 INFO L225 Difference]: With dead ends: 76 [2020-07-07 11:15:49,179 INFO L226 Difference]: Without dead ends: 74 [2020-07-07 11:15:49,180 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 [2020-07-07 11:15:49,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-07 11:15:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-07-07 11:15:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-07 11:15:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-07-07 11:15:49,189 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-07-07 11:15:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,190 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-07-07 11:15:49,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-07-07 11:15:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:15:49,191 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:15:49,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-07-07 11:15:49,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228344288] [2020-07-07 11:15:49,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228344288] [2020-07-07 11:15:49,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425930453] [2020-07-07 11:15:49,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,228 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-07-07 11:15:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,252 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-07-07 11:15:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-07 11:15:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,254 INFO L225 Difference]: With dead ends: 124 [2020-07-07 11:15:49,254 INFO L226 Difference]: Without dead ends: 76 [2020-07-07 11:15:49,255 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 [2020-07-07 11:15:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-07 11:15:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-07 11:15:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-07 11:15:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-07-07 11:15:49,266 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-07-07 11:15:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,266 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-07-07 11:15:49,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-07-07 11:15:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:15:49,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:15:49,268 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-07-07 11:15:49,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450305162] [2020-07-07 11:15:49,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450305162] [2020-07-07 11:15:49,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431790630] [2020-07-07 11:15:49,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,308 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-07-07 11:15:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,334 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-07-07 11:15:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:15:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,336 INFO L225 Difference]: With dead ends: 111 [2020-07-07 11:15:49,337 INFO L226 Difference]: Without dead ends: 78 [2020-07-07 11:15:49,337 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 [2020-07-07 11:15:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-07 11:15:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-07-07 11:15:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 11:15:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-07-07 11:15:49,346 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-07-07 11:15:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,347 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-07-07 11:15:49,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-07-07 11:15:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:15:49,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:15:49,349 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-07-07 11:15:49,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524439834] [2020-07-07 11:15:49,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524439834] [2020-07-07 11:15:49,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287171448] [2020-07-07 11:15:49,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,384 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-07-07 11:15:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,403 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-07-07 11:15:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:15:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,405 INFO L225 Difference]: With dead ends: 132 [2020-07-07 11:15:49,405 INFO L226 Difference]: Without dead ends: 130 [2020-07-07 11:15:49,406 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 [2020-07-07 11:15:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-07 11:15:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-07-07 11:15:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-07 11:15:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-07-07 11:15:49,418 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-07-07 11:15:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,418 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-07-07 11:15:49,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-07-07 11:15:49,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:15:49,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:15:49,421 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-07-07 11:15:49,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478485539] [2020-07-07 11:15:49,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478485539] [2020-07-07 11:15:49,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969946766] [2020-07-07 11:15:49,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,451 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-07-07 11:15:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,472 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-07-07 11:15:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:15:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,474 INFO L225 Difference]: With dead ends: 232 [2020-07-07 11:15:49,474 INFO L226 Difference]: Without dead ends: 138 [2020-07-07 11:15:49,475 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 [2020-07-07 11:15:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-07 11:15:49,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-07-07 11:15:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-07 11:15:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-07-07 11:15:49,489 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-07-07 11:15:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,489 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-07-07 11:15:49,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-07-07 11:15:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:15:49,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:15:49,492 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-07-07 11:15:49,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965503305] [2020-07-07 11:15:49,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965503305] [2020-07-07 11:15:49,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83284976] [2020-07-07 11:15:49,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,548 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-07-07 11:15:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,566 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-07-07 11:15:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 11:15:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,568 INFO L225 Difference]: With dead ends: 204 [2020-07-07 11:15:49,568 INFO L226 Difference]: Without dead ends: 142 [2020-07-07 11:15:49,569 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 [2020-07-07 11:15:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-07 11:15:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-07 11:15:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-07 11:15:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-07-07 11:15:49,579 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-07-07 11:15:49,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,580 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-07-07 11:15:49,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-07-07 11:15:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:15:49,582 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:15:49,582 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-07-07 11:15:49,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230808455] [2020-07-07 11:15:49,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230808455] [2020-07-07 11:15:49,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396031586] [2020-07-07 11:15:49,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,611 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-07-07 11:15:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,634 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-07-07 11:15:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 11:15:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,636 INFO L225 Difference]: With dead ends: 236 [2020-07-07 11:15:49,636 INFO L226 Difference]: Without dead ends: 234 [2020-07-07 11:15:49,637 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 [2020-07-07 11:15:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-07-07 11:15:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-07-07 11:15:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-07 11:15:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-07-07 11:15:49,650 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-07-07 11:15:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,651 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-07-07 11:15:49,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-07-07 11:15:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:15:49,653 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:15:49,653 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-07-07 11:15:49,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371156600] [2020-07-07 11:15:49,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371156600] [2020-07-07 11:15:49,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88980413] [2020-07-07 11:15:49,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,679 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-07-07 11:15:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,701 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-07-07 11:15:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 11:15:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,704 INFO L225 Difference]: With dead ends: 444 [2020-07-07 11:15:49,704 INFO L226 Difference]: Without dead ends: 258 [2020-07-07 11:15:49,705 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 [2020-07-07 11:15:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-07 11:15:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-07-07 11:15:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-07 11:15:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-07-07 11:15:49,719 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-07-07 11:15:49,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,720 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-07-07 11:15:49,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-07-07 11:15:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:49,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:15:49,722 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,723 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-07-07 11:15:49,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520875968] [2020-07-07 11:15:49,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520875968] [2020-07-07 11:15:49,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507771005] [2020-07-07 11:15:49,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,751 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-07-07 11:15:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,770 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-07-07 11:15:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,772 INFO L225 Difference]: With dead ends: 384 [2020-07-07 11:15:49,773 INFO L226 Difference]: Without dead ends: 266 [2020-07-07 11:15:49,774 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 [2020-07-07 11:15:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-07-07 11:15:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-07-07 11:15:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-07-07 11:15:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-07-07 11:15:49,786 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-07-07 11:15:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,786 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-07-07 11:15:49,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-07-07 11:15:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:49,788 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:15:49,788 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-07-07 11:15:49,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622792160] [2020-07-07 11:15:49,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622792160] [2020-07-07 11:15:49,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101749529] [2020-07-07 11:15:49,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,815 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-07-07 11:15:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,834 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-07-07 11:15:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,837 INFO L225 Difference]: With dead ends: 426 [2020-07-07 11:15:49,837 INFO L226 Difference]: Without dead ends: 424 [2020-07-07 11:15:49,838 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 [2020-07-07 11:15:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-07-07 11:15:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-07-07 11:15:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-07 11:15:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-07-07 11:15:49,853 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-07-07 11:15:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,853 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-07-07 11:15:49,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-07-07 11:15:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:49,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:49,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:49,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 11:15:49,855 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-07-07 11:15:49,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:49,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145755143] [2020-07-07 11:15:49,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:49,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145755143] [2020-07-07 11:15:49,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:49,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:49,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165230850] [2020-07-07 11:15:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:49,892 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-07-07 11:15:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:49,919 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-07-07 11:15:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:49,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:49,920 INFO L225 Difference]: With dead ends: 856 [2020-07-07 11:15:49,920 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:15:49,924 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 [2020-07-07 11:15:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:15:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:15:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:15:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:15:49,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-07-07 11:15:49,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:49,926 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:15:49,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:15:49,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:15:49,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 11:15:49,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:15:49,950 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:15:49,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:15:49,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:15:49,951 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:15:49,951 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:15:49,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:15:49,951 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-07 11:15:49,951 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,952 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,953 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-07-07 11:15:49,953 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-07-07 11:15:49,953 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,953 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-07-07 11:15:49,953 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-07 11:15:49,953 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-07-07 11:15:49,954 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-07-07 11:15:49,954 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,954 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-07-07 11:15:49,954 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-07 11:15:49,954 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-07-07 11:15:49,954 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-07-07 11:15:49,954 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-07-07 11:15:49,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:15:49 BoogieIcfgContainer [2020-07-07 11:15:49,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:15:49,968 INFO L168 Benchmark]: Toolchain (without parser) took 2419.78 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 102.3 MB in the beginning and 146.5 MB in the end (delta: -44.3 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:49,969 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 146.3 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 11:15:49,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.01 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:49,971 INFO L168 Benchmark]: Boogie Preprocessor took 142.62 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 92.0 MB in the beginning and 182.3 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:49,972 INFO L168 Benchmark]: RCFGBuilder took 353.16 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 167.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:49,972 INFO L168 Benchmark]: TraceAbstraction took 1685.53 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.6 MB in the beginning and 146.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:49,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 146.3 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.01 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.62 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 92.0 MB in the beginning and 182.3 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.16 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 167.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1685.53 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.6 MB in the beginning and 146.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...