/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:58:07,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:58:07,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:58:07,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:58:07,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:58:07,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:58:07,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:58:07,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:58:07,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:58:07,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:58:07,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:58:07,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:58:07,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:58:07,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:58:07,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:58:07,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:58:07,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:58:07,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:58:07,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:58:07,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:58:07,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:58:07,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:58:07,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:58:07,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:58:07,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:58:07,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:58:07,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:58:07,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:58:07,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:58:07,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:58:07,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:58:07,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:58:07,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:58:07,417 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:58:07,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:58:07,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:58:07,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:58:07,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:58:07,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:58:07,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:58:07,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:58:07,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:58:07,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:58:07,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:58:07,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:58:07,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:58:07,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:58:07,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:58:07,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:58:07,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:58:07,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:58:07,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:58:07,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:58:07,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:58:07,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:58:07,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:58:07,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:58:07,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:58:07,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:58:07,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:58:07,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:58:07,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:58:07,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:58:07,797 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:58:07,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 01:58:07,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92cea859/5d34ec692693488a91cd2b0b9cd9c5dc/FLAG97fc8e241 [2020-08-19 01:58:08,299 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:58:08,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 01:58:08,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92cea859/5d34ec692693488a91cd2b0b9cd9c5dc/FLAG97fc8e241 [2020-08-19 01:58:08,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92cea859/5d34ec692693488a91cd2b0b9cd9c5dc [2020-08-19 01:58:08,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:58:08,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:58:08,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:08,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:58:08,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:58:08,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:08" (1/1) ... [2020-08-19 01:58:08,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:08, skipping insertion in model container [2020-08-19 01:58:08,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:08" (1/1) ... [2020-08-19 01:58:08,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:58:08,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:58:08,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:08,959 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:58:08,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:09,012 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:58:09,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09 WrapperNode [2020-08-19 01:58:09,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:09,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:58:09,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:58:09,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:58:09,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... [2020-08-19 01:58:09,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:58:09,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:58:09,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:58:09,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:58:09,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:58:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:58:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:58:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:58:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:58:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:58:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:58:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:58:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:58:09,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:58:09,472 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 01:58:09,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:09 BoogieIcfgContainer [2020-08-19 01:58:09,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:58:09,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:58:09,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:58:09,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:58:09,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:58:08" (1/3) ... [2020-08-19 01:58:09,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7618d796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:09, skipping insertion in model container [2020-08-19 01:58:09,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:09" (2/3) ... [2020-08-19 01:58:09,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7618d796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:09, skipping insertion in model container [2020-08-19 01:58:09,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:09" (3/3) ... [2020-08-19 01:58:09,488 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-08-19 01:58:09,504 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:58:09,514 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:58:09,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:58:09,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:58:09,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:58:09,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:58:09,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:58:09,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:58:09,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:58:09,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:58:09,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:58:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 01:58:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:58:09,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:09,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:09,591 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-08-19 01:58:09,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:09,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840676742] [2020-08-19 01:58:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:09,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840676742] [2020-08-19 01:58:09,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:09,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:09,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943200956] [2020-08-19 01:58:09,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:09,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:09,809 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-08-19 01:58:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:09,887 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-08-19 01:58:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:09,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 01:58:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:09,904 INFO L225 Difference]: With dead ends: 57 [2020-08-19 01:58:09,905 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:58:09,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:58:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-19 01:58:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 01:58:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-08-19 01:58:09,950 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-08-19 01:58:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:09,950 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-08-19 01:58:09,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-08-19 01:58:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:58:09,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:09,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:09,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:58:09,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:09,953 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-08-19 01:58:09,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:09,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016993974] [2020-08-19 01:58:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016993974] [2020-08-19 01:58:10,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373077295] [2020-08-19 01:58:10,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,026 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-08-19 01:58:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,056 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-08-19 01:58:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 01:58:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,058 INFO L225 Difference]: With dead ends: 67 [2020-08-19 01:58:10,058 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:58:10,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:58:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-19 01:58:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 01:58:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-08-19 01:58:10,070 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-08-19 01:58:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,070 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-08-19 01:58:10,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-08-19 01:58:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:58:10,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:58:10,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-08-19 01:58:10,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138531709] [2020-08-19 01:58:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138531709] [2020-08-19 01:58:10,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076423241] [2020-08-19 01:58:10,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,129 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-08-19 01:58:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,162 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-08-19 01:58:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:58:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,165 INFO L225 Difference]: With dead ends: 63 [2020-08-19 01:58:10,165 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 01:58:10,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 01:58:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-08-19 01:58:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 01:58:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-08-19 01:58:10,174 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-08-19 01:58:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,175 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-08-19 01:58:10,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-08-19 01:58:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:58:10,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:58:10,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-08-19 01:58:10,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651167050] [2020-08-19 01:58:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651167050] [2020-08-19 01:58:10,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917288098] [2020-08-19 01:58:10,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,226 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-08-19 01:58:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,249 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-08-19 01:58:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:58:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,251 INFO L225 Difference]: With dead ends: 76 [2020-08-19 01:58:10,252 INFO L226 Difference]: Without dead ends: 74 [2020-08-19 01:58:10,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-19 01:58:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-08-19 01:58:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 01:58:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-08-19 01:58:10,263 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-08-19 01:58:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,264 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-08-19 01:58:10,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-08-19 01:58:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:58:10,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:58:10,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-08-19 01:58:10,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820543489] [2020-08-19 01:58:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820543489] [2020-08-19 01:58:10,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115517423] [2020-08-19 01:58:10,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,303 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-08-19 01:58:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,325 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-08-19 01:58:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:58:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,327 INFO L225 Difference]: With dead ends: 124 [2020-08-19 01:58:10,327 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 01:58:10,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 01:58:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-08-19 01:58:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-19 01:58:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-08-19 01:58:10,340 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-08-19 01:58:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,340 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-08-19 01:58:10,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-08-19 01:58:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:58:10,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:58:10,345 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-08-19 01:58:10,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427425515] [2020-08-19 01:58:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427425515] [2020-08-19 01:58:10,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705561280] [2020-08-19 01:58:10,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,383 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-08-19 01:58:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,402 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-08-19 01:58:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:58:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,404 INFO L225 Difference]: With dead ends: 111 [2020-08-19 01:58:10,404 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 01:58:10,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 01:58:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-08-19 01:58:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 01:58:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-08-19 01:58:10,416 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-08-19 01:58:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,417 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-08-19 01:58:10,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-08-19 01:58:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:58:10,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:58:10,419 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-08-19 01:58:10,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705605148] [2020-08-19 01:58:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705605148] [2020-08-19 01:58:10,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635439392] [2020-08-19 01:58:10,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,457 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-08-19 01:58:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,479 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-08-19 01:58:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:58:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,482 INFO L225 Difference]: With dead ends: 132 [2020-08-19 01:58:10,482 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 01:58:10,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 01:58:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-08-19 01:58:10,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 01:58:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-08-19 01:58:10,497 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-08-19 01:58:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,497 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-08-19 01:58:10,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-08-19 01:58:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:58:10,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:58:10,500 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-08-19 01:58:10,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679649507] [2020-08-19 01:58:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679649507] [2020-08-19 01:58:10,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687599574] [2020-08-19 01:58:10,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,533 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-08-19 01:58:10,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,561 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-08-19 01:58:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:58:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,566 INFO L225 Difference]: With dead ends: 232 [2020-08-19 01:58:10,567 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 01:58:10,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 01:58:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-19 01:58:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 01:58:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-08-19 01:58:10,596 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-08-19 01:58:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,597 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-08-19 01:58:10,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-08-19 01:58:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:58:10,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:58:10,599 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-08-19 01:58:10,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95723200] [2020-08-19 01:58:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95723200] [2020-08-19 01:58:10,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133139308] [2020-08-19 01:58:10,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,641 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-08-19 01:58:10,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,664 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-08-19 01:58:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:58:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,666 INFO L225 Difference]: With dead ends: 204 [2020-08-19 01:58:10,666 INFO L226 Difference]: Without dead ends: 142 [2020-08-19 01:58:10,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-19 01:58:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-19 01:58:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 01:58:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-08-19 01:58:10,680 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-08-19 01:58:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,681 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-08-19 01:58:10,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-08-19 01:58:10,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:58:10,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:58:10,683 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-08-19 01:58:10,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221393980] [2020-08-19 01:58:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221393980] [2020-08-19 01:58:10,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939997235] [2020-08-19 01:58:10,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,716 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-08-19 01:58:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,744 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-08-19 01:58:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:58:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,748 INFO L225 Difference]: With dead ends: 236 [2020-08-19 01:58:10,748 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 01:58:10,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 01:58:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-08-19 01:58:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-19 01:58:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-08-19 01:58:10,771 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-08-19 01:58:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,772 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-08-19 01:58:10,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-08-19 01:58:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:58:10,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:58:10,778 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-08-19 01:58:10,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302339570] [2020-08-19 01:58:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302339570] [2020-08-19 01:58:10,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526865246] [2020-08-19 01:58:10,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,838 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-08-19 01:58:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,901 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-08-19 01:58:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:58:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,904 INFO L225 Difference]: With dead ends: 444 [2020-08-19 01:58:10,904 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 01:58:10,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 01:58:10,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-08-19 01:58:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 01:58:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-08-19 01:58:10,931 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-08-19 01:58:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:10,932 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-08-19 01:58:10,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-08-19 01:58:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:58:10,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:10,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:10,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:58:10,936 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-08-19 01:58:10,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:10,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933260487] [2020-08-19 01:58:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:10,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933260487] [2020-08-19 01:58:10,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:10,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:10,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874577681] [2020-08-19 01:58:10,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:10,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:10,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:10,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,967 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-08-19 01:58:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:10,988 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-08-19 01:58:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:10,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:58:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:10,991 INFO L225 Difference]: With dead ends: 384 [2020-08-19 01:58:10,991 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 01:58:10,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 01:58:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-08-19 01:58:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 01:58:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-08-19 01:58:11,003 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-08-19 01:58:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:11,004 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-08-19 01:58:11,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-08-19 01:58:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:58:11,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:11,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:11,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:58:11,006 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:11,006 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-08-19 01:58:11,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:11,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326990705] [2020-08-19 01:58:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:11,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326990705] [2020-08-19 01:58:11,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:11,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:11,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259791357] [2020-08-19 01:58:11,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:11,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:11,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:11,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,033 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-08-19 01:58:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:11,063 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-08-19 01:58:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:11,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:58:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:11,067 INFO L225 Difference]: With dead ends: 426 [2020-08-19 01:58:11,067 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 01:58:11,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 01:58:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-08-19 01:58:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-19 01:58:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-08-19 01:58:11,087 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-08-19 01:58:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:11,087 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-08-19 01:58:11,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-08-19 01:58:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:58:11,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:11,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:11,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:58:11,089 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:11,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:11,090 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-08-19 01:58:11,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:11,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561174290] [2020-08-19 01:58:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:11,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561174290] [2020-08-19 01:58:11,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:11,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:11,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501036318] [2020-08-19 01:58:11,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:11,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:11,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,143 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-08-19 01:58:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:11,176 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-08-19 01:58:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:11,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:58:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:11,177 INFO L225 Difference]: With dead ends: 856 [2020-08-19 01:58:11,178 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:58:11,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:58:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:58:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:58:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:58:11,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-08-19 01:58:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:11,185 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:58:11,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:58:11,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:58:11,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:58:11,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:58:11,219 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 01:58:11,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:58:11,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:58:11,220 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:58:11,220 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:58:11,220 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:58:11,220 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-19 01:58:11,220 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-08-19 01:58:11,220 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-08-19 01:58:11,220 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,221 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-08-19 01:58:11,222 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-08-19 01:58:11,222 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,222 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-08-19 01:58:11,222 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-19 01:58:11,222 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-08-19 01:58:11,222 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-19 01:58:11,223 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,223 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-08-19 01:58:11,223 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 01:58:11,223 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-08-19 01:58:11,223 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-08-19 01:58:11,223 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:58:11,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:58:11 BoogieIcfgContainer [2020-08-19 01:58:11,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:58:11,246 INFO L168 Benchmark]: Toolchain (without parser) took 2555.69 ms. Allocated memory was 146.3 MB in the beginning and 235.4 MB in the end (delta: 89.1 MB). Free memory was 102.7 MB in the beginning and 144.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:11,248 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:58:11,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.38 ms. Allocated memory is still 146.3 MB. Free memory was 102.4 MB in the beginning and 92.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:11,253 INFO L168 Benchmark]: Boogie Preprocessor took 144.53 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:11,262 INFO L168 Benchmark]: RCFGBuilder took 315.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 166.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:11,264 INFO L168 Benchmark]: TraceAbstraction took 1761.56 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.0 MB in the beginning and 144.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:11,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.38 ms. Allocated memory is still 146.3 MB. Free memory was 102.4 MB in the beginning and 92.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.53 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 166.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1761.56 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.0 MB in the beginning and 144.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...