/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/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:33:44,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:44,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:44,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:44,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:44,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:44,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:44,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:44,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:44,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:44,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:44,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:44,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:44,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:44,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:44,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:44,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:44,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:44,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:44,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:44,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:44,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:44,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:44,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:44,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:44,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:44,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:44,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:44,643 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 11:33:44,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:44,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:44,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:44,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:44,664 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:44,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:44,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:44,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:44,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:44,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:44,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:44,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:44,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:44,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:44,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:44,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:44,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:44,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:44,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:44,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:44,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:44,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:44,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:44,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:44,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:44,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:44,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:44,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:44,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:44,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:45,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:45,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:45,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:45,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:45,040 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:45,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-07-07 11:33:45,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce7e68fa/8b4e6212a9e74e4c82b0fe18f93eb407/FLAGf260b2be1 [2020-07-07 11:33:45,733 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:45,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-07-07 11:33:45,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce7e68fa/8b4e6212a9e74e4c82b0fe18f93eb407/FLAGf260b2be1 [2020-07-07 11:33:46,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce7e68fa/8b4e6212a9e74e4c82b0fe18f93eb407 [2020-07-07 11:33:46,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:46,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:46,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:46,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:46,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:46,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d81a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46, skipping insertion in model container [2020-07-07 11:33:46,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:46,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:46,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:46,332 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:46,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:46,372 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:46,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46 WrapperNode [2020-07-07 11:33:46,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:46,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:46,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:46,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:46,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (1/1) ... [2020-07-07 11:33:46,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:46,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:46,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:46,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:46,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (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 11:33:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:33:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:33:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:33:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:33:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:33:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:46,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:46,845 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:33:46,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:46 BoogieIcfgContainer [2020-07-07 11:33:46,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:46,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:46,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:46,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:46,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:46" (1/3) ... [2020-07-07 11:33:46,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3875bf88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:46, skipping insertion in model container [2020-07-07 11:33:46,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:46" (2/3) ... [2020-07-07 11:33:46,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3875bf88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:46, skipping insertion in model container [2020-07-07 11:33:46,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:46" (3/3) ... [2020-07-07 11:33:46,860 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-07-07 11:33:46,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:46,881 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:46,908 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:46,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:46,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:46,986 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:46,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:46,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:46,987 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:46,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:46,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-07 11:33:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:33:47,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:47,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:47,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash 160437665, now seen corresponding path program 1 times [2020-07-07 11:33:47,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:47,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112448900] [2020-07-07 11:33:47,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,170 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 11:33:47,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112448900] [2020-07-07 11:33:47,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:47,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 11:33:47,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587903553] [2020-07-07 11:33:47,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 11:33:47,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 11:33:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:33:47,194 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-07-07 11:33:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:47,223 INFO L93 Difference]: Finished difference Result 61 states and 92 transitions. [2020-07-07 11:33:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 11:33:47,225 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-07 11:33:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:47,235 INFO L225 Difference]: With dead ends: 61 [2020-07-07 11:33:47,235 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:33:47,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:33:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:33:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-07 11:33:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:33:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2020-07-07 11:33:47,284 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 14 [2020-07-07 11:33:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:47,284 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2020-07-07 11:33:47,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 11:33:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2020-07-07 11:33:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:33:47,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:47,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:47,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:47,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:47,287 INFO L82 PathProgramCache]: Analyzing trace with hash 89152719, now seen corresponding path program 1 times [2020-07-07 11:33:47,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:47,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36607678] [2020-07-07 11:33:47,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,400 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 11:33:47,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36607678] [2020-07-07 11:33:47,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:47,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:47,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225486553] [2020-07-07 11:33:47,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:47,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:47,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:47,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:47,405 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand 5 states. [2020-07-07 11:33:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:47,528 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-07-07 11:33:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:47,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-07 11:33:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:47,530 INFO L225 Difference]: With dead ends: 35 [2020-07-07 11:33:47,530 INFO L226 Difference]: Without dead ends: 33 [2020-07-07 11:33:47,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-07 11:33:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-07 11:33:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-07 11:33:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-07-07 11:33:47,545 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2020-07-07 11:33:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:47,546 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-07-07 11:33:47,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:47,547 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-07-07 11:33:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:33:47,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:47,548 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:47,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:33:47,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:47,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:47,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1105875316, now seen corresponding path program 1 times [2020-07-07 11:33:47,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:47,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140655465] [2020-07-07 11:33:47,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:47,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140655465] [2020-07-07 11:33:47,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:47,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:47,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551455906] [2020-07-07 11:33:47,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:47,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:47,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:47,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:47,674 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2020-07-07 11:33:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:47,829 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-07-07 11:33:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:47,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-07 11:33:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:47,834 INFO L225 Difference]: With dead ends: 48 [2020-07-07 11:33:47,835 INFO L226 Difference]: Without dead ends: 46 [2020-07-07 11:33:47,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-07 11:33:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-07 11:33:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-07 11:33:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-07-07 11:33:47,855 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 20 [2020-07-07 11:33:47,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:47,856 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-07-07 11:33:47,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:47,856 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2020-07-07 11:33:47,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 11:33:47,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:47,858 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:47,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:33:47,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:47,860 INFO L82 PathProgramCache]: Analyzing trace with hash 726428669, now seen corresponding path program 1 times [2020-07-07 11:33:47,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:47,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399163923] [2020-07-07 11:33:47,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 11:33:48,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399163923] [2020-07-07 11:33:48,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:48,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:48,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753294052] [2020-07-07 11:33:48,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:48,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:48,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:48,039 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 6 states. [2020-07-07 11:33:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:48,174 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-07-07 11:33:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:48,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-07 11:33:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:48,177 INFO L225 Difference]: With dead ends: 55 [2020-07-07 11:33:48,179 INFO L226 Difference]: Without dead ends: 53 [2020-07-07 11:33:48,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-07 11:33:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-07-07 11:33:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-07 11:33:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-07-07 11:33:48,218 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 28 [2020-07-07 11:33:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:48,232 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-07-07 11:33:48,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-07-07 11:33:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:33:48,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:48,234 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:48,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:33:48,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:48,235 INFO L82 PathProgramCache]: Analyzing trace with hash 239914697, now seen corresponding path program 1 times [2020-07-07 11:33:48,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:48,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459126264] [2020-07-07 11:33:48,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:48,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459126264] [2020-07-07 11:33:48,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:48,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:33:48,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015010432] [2020-07-07 11:33:48,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:33:48,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:48,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:33:48,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:48,432 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 7 states. [2020-07-07 11:33:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:48,699 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2020-07-07 11:33:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:48,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-07-07 11:33:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:48,702 INFO L225 Difference]: With dead ends: 70 [2020-07-07 11:33:48,702 INFO L226 Difference]: Without dead ends: 63 [2020-07-07 11:33:48,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-07 11:33:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-07-07 11:33:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-07 11:33:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-07-07 11:33:48,718 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 31 [2020-07-07 11:33:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:48,719 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-07-07 11:33:48,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:33:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-07-07 11:33:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:33:48,721 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:48,721 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:48,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:33:48,721 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:48,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1617190790, now seen corresponding path program 1 times [2020-07-07 11:33:48,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:48,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003667834] [2020-07-07 11:33:48,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:48,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003667834] [2020-07-07 11:33:48,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:48,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:33:48,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133507989] [2020-07-07 11:33:48,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:33:48,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:48,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:33:48,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:48,885 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 8 states. [2020-07-07 11:33:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:49,150 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-07-07 11:33:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:33:49,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-07-07 11:33:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:49,156 INFO L225 Difference]: With dead ends: 72 [2020-07-07 11:33:49,156 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 11:33:49,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 11:33:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-07-07 11:33:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-07 11:33:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-07-07 11:33:49,189 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 33 [2020-07-07 11:33:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:49,192 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-07-07 11:33:49,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:33:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-07-07 11:33:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-07 11:33:49,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:49,195 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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] [2020-07-07 11:33:49,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:33:49,200 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash 260855770, now seen corresponding path program 1 times [2020-07-07 11:33:49,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:49,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631377561] [2020-07-07 11:33:49,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:49,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631377561] [2020-07-07 11:33:49,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537491770] [2020-07-07 11:33:49,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,459 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:33:49,475 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:49,663 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:33:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:49,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:49,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-07 11:33:49,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360852511] [2020-07-07 11:33:49,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 11:33:49,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:49,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 11:33:49,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:33:49,717 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 15 states. [2020-07-07 11:33:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:50,335 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-07-07 11:33:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 11:33:50,335 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-07-07 11:33:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:50,338 INFO L225 Difference]: With dead ends: 110 [2020-07-07 11:33:50,338 INFO L226 Difference]: Without dead ends: 95 [2020-07-07 11:33:50,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-07-07 11:33:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-07 11:33:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-07-07 11:33:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-07 11:33:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2020-07-07 11:33:50,357 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 56 [2020-07-07 11:33:50,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:50,357 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2020-07-07 11:33:50,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 11:33:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2020-07-07 11:33:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-07 11:33:50,359 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:50,359 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:50,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 11:33:50,573 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash 266725463, now seen corresponding path program 1 times [2020-07-07 11:33:50,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:50,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292757282] [2020-07-07 11:33:50,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:50,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292757282] [2020-07-07 11:33:50,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120922109] [2020-07-07 11:33:50,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,728 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:33:50,732 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:50,819 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:50,827 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:50,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:50,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-07 11:33:50,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364584836] [2020-07-07 11:33:50,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 11:33:50,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:50,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 11:33:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:33:50,859 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand 14 states. [2020-07-07 11:33:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:51,126 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2020-07-07 11:33:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:33:51,128 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-07-07 11:33:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:51,132 INFO L225 Difference]: With dead ends: 93 [2020-07-07 11:33:51,133 INFO L226 Difference]: Without dead ends: 91 [2020-07-07 11:33:51,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:33:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-07 11:33:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-07-07 11:33:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-07 11:33:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-07-07 11:33:51,151 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 58 [2020-07-07 11:33:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:51,152 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-07-07 11:33:51,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 11:33:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-07-07 11:33:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-07 11:33:51,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:51,154 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:51,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:51,367 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:51,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:51,368 INFO L82 PathProgramCache]: Analyzing trace with hash 437927078, now seen corresponding path program 2 times [2020-07-07 11:33:51,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:51,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056979215] [2020-07-07 11:33:51,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:51,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056979215] [2020-07-07 11:33:51,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610516936] [2020-07-07 11:33:51,669 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:51,713 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:51,714 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:51,716 INFO L264 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:33:51,721 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:51,877 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:51,878 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:51,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:51,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2020-07-07 11:33:51,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703359538] [2020-07-07 11:33:51,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:33:51,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:51,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:33:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:33:51,932 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 19 states. [2020-07-07 11:33:52,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:52,448 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-07-07 11:33:52,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 11:33:52,449 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-07-07 11:33:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:52,451 INFO L225 Difference]: With dead ends: 112 [2020-07-07 11:33:52,451 INFO L226 Difference]: Without dead ends: 110 [2020-07-07 11:33:52,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2020-07-07 11:33:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-07 11:33:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-07-07 11:33:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-07 11:33:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2020-07-07 11:33:52,468 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 83 [2020-07-07 11:33:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:52,469 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2020-07-07 11:33:52,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:33:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2020-07-07 11:33:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-07-07 11:33:52,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:52,472 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:52,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:52,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:52,687 INFO L82 PathProgramCache]: Analyzing trace with hash 314554042, now seen corresponding path program 2 times [2020-07-07 11:33:52,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:52,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069696948] [2020-07-07 11:33:52,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-07-07 11:33:52,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069696948] [2020-07-07 11:33:52,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704214386] [2020-07-07 11:33:52,949 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:53,009 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:53,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:53,011 INFO L264 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:33:53,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:53,119 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 68 proven. 22 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-07-07 11:33:53,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:53,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-07 11:33:53,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286893484] [2020-07-07 11:33:53,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 11:33:53,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:53,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 11:33:53,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-07-07 11:33:53,175 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 17 states. [2020-07-07 11:33:53,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:53,471 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2020-07-07 11:33:53,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:33:53,472 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 106 [2020-07-07 11:33:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:53,474 INFO L225 Difference]: With dead ends: 105 [2020-07-07 11:33:53,474 INFO L226 Difference]: Without dead ends: 96 [2020-07-07 11:33:53,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-07-07 11:33:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-07 11:33:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-07 11:33:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-07 11:33:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-07-07 11:33:53,488 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 106 [2020-07-07 11:33:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:53,489 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-07-07 11:33:53,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 11:33:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-07-07 11:33:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-07 11:33:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:53,491 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:53,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:53,706 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash 331157303, now seen corresponding path program 3 times [2020-07-07 11:33:53,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:53,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357170726] [2020-07-07 11:33:53,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 30 proven. 48 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-07-07 11:33:54,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357170726] [2020-07-07 11:33:54,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971847877] [2020-07-07 11:33:54,033 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:54,099 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-07-07 11:33:54,099 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:54,100 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 11:33:54,109 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:54,387 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:54,390 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-07-07 11:33:54,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:54,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2020-07-07 11:33:54,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198790852] [2020-07-07 11:33:54,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 11:33:54,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:54,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 11:33:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-07-07 11:33:54,451 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 26 states. [2020-07-07 11:33:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,805 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-07-07 11:33:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-07 11:33:55,806 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 108 [2020-07-07 11:33:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,807 INFO L225 Difference]: With dead ends: 111 [2020-07-07 11:33:55,807 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:33:55,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 11:33:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:33:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:33:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:33:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:33:55,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2020-07-07 11:33:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,812 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:33:55,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 11:33:55,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:33:55,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:33:56,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-07 11:33:56,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:33:56,786 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:33:56,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,786 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:33:56,787 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:33:56,787 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,787 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:56,787 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 11:33:56,787 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:56,787 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:56,788 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-07 11:33:56,788 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-07-07 11:33:56,788 INFO L271 CegarLoopResult]: At program point L44(lines 14 45) the Hoare annotation is: true [2020-07-07 11:33:56,790 INFO L264 CegarLoopResult]: At program point L36(lines 26 37) the Hoare annotation is: (let ((.cse0 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse1 (<= (+ main_~bufferlen~0 1) main_~inlen~0))) (or (and (<= main_~in~0 0) (= 0 main_~buf~0) (<= 0 main_~in~0) (<= (+ main_~buf~0 2) main_~bufferlen~0) .cse0 .cse1) (and (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= main_~buf~0 main_~buflim~0) (<= 1 main_~in~0) .cse0 .cse1 (<= 0 main_~buf~0)))) [2020-07-07 11:33:56,790 INFO L268 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-07-07 11:33:56,791 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-07 11:33:56,791 INFO L268 CegarLoopResult]: For program point L20-1(lines 14 45) no Hoare annotation was computed. [2020-07-07 11:33:56,791 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 2 main_~bufferlen~0) (<= 0 main_~in~0) (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 0 main_~buf~0)) [2020-07-07 11:33:56,791 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 2 main_~bufferlen~0) (<= 0 main_~in~0) (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 0 main_~buf~0)) [2020-07-07 11:33:56,791 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-07-07 11:33:56,791 INFO L268 CegarLoopResult]: For program point L21(lines 14 45) no Hoare annotation was computed. [2020-07-07 11:33:56,792 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 45) no Hoare annotation was computed. [2020-07-07 11:33:56,792 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-07-07 11:33:56,793 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= 0 main_~in~0) (<= 0 main_~buf~0)) [2020-07-07 11:33:56,794 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= (+ main_~buf~0 1) main_~buflim~0)) (.cse1 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse2 (<= (+ main_~bufferlen~0 1) main_~inlen~0))) (or (and (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) .cse0 (<= 1 main_~in~0) .cse1 .cse2 (<= 0 main_~buf~0)) (and (<= main_~in~0 0) (= 0 main_~buf~0) (<= 0 main_~in~0) .cse0 .cse1 .cse2))) [2020-07-07 11:33:56,794 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-07-07 11:33:56,794 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= (+ main_~buf~0 1) main_~buflim~0)) (.cse1 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse2 (<= (+ main_~bufferlen~0 1) main_~inlen~0))) (or (and (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) .cse0 (<= 1 main_~in~0) .cse1 .cse2 (<= 0 main_~buf~0)) (and (<= main_~in~0 0) (= 0 main_~buf~0) (<= 0 main_~in~0) .cse0 .cse1 .cse2))) [2020-07-07 11:33:56,795 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 37) no Hoare annotation was computed. [2020-07-07 11:33:56,795 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 37) the Hoare annotation is: (and (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= 0 main_~in~0) (<= 0 main_~buf~0)) [2020-07-07 11:33:56,795 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-07 11:33:56,796 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-07 11:33:56,796 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= main_~buf~0 main_~buflim~0) (<= 1 main_~in~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~buf~0)) [2020-07-07 11:33:56,796 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= main_~buf~0 main_~buflim~0) (<= 1 main_~in~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~buf~0)) [2020-07-07 11:33:56,796 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 11:33:56,796 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-07 11:33:56,797 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-07 11:33:56,798 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-07 11:33:56,798 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-07 11:33:56,798 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-07 11:33:56,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:56 BoogieIcfgContainer [2020-07-07 11:33:56,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:56,843 INFO L168 Benchmark]: Toolchain (without parser) took 10767.96 ms. Allocated memory was 137.9 MB in the beginning and 308.8 MB in the end (delta: 170.9 MB). Free memory was 102.8 MB in the beginning and 206.5 MB in the end (delta: -103.7 MB). Peak memory consumption was 180.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,845 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.21 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,846 INFO L168 Benchmark]: Boogie Preprocessor took 128.62 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,849 INFO L168 Benchmark]: RCFGBuilder took 347.56 ms. Allocated memory is still 201.3 MB. Free memory was 181.4 MB in the beginning and 165.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,860 INFO L168 Benchmark]: TraceAbstraction took 9982.44 ms. Allocated memory was 201.3 MB in the beginning and 308.8 MB in the end (delta: 107.5 MB). Free memory was 164.7 MB in the beginning and 206.5 MB in the end (delta: -41.7 MB). Peak memory consumption was 178.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.21 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.62 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.56 ms. Allocated memory is still 201.3 MB. Free memory was 181.4 MB in the beginning and 165.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9982.44 ms. Allocated memory was 201.3 MB in the beginning and 308.8 MB in the end (delta: 107.5 MB). Free memory was 164.7 MB in the beginning and 206.5 MB in the end (delta: -41.7 MB). Peak memory consumption was 178.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((in <= 0 && 0 == buf) && 0 <= in) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && bufferlen + 1 <= inlen) || (((((in + buflim + 3 <= buf + inlen && buf <= buflim) && 1 <= in) && bufferlen == buflim + 2) && bufferlen + 1 <= inlen) && 0 <= buf) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 11, TraceHistogramMax: 16, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 448 SDtfs, 460 SDslu, 1897 SDs, 0 SdLazy, 1450 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 708 GetRequests, 536 SyntacticMatches, 9 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, 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, 11 MinimizatonAttempts, 33 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 64 PreInvPairs, 113 NumberOfFragments, 282 HoareAnnotationTreeSize, 64 FomulaSimplifications, 1686 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 930 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 963 NumberOfCodeBlocks, 958 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 947 ConstructedInterpolants, 0 QuantifiedInterpolants, 253429 SizeOfPredicates, 20 NumberOfNonLiveVariables, 782 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 2741/2972 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...