/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:23:36,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:36,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:36,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:36,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:36,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:36,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:36,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:36,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:36,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:36,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:36,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:36,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:36,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:36,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:36,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:36,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:36,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:36,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:36,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:36,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:36,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:36,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:36,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:36,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:23:36,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:36,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:36,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:36,770 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 04:23:36,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:36,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:36,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:36,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:36,823 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:36,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:36,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:36,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:36,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:36,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:36,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:36,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:36,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:36,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:36,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:36,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:36,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:36,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:36,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:36,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:36,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:36,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:36,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:36,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:36,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:36,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:36,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:36,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:36,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:36,831 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:37,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:37,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:37,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:37,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:37,136 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:37,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-08-19 04:23:37,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b836e928/567360103c9340d3970655e51dcd712d/FLAG3bf6e52cd [2020-08-19 04:23:37,630 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:37,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-08-19 04:23:37,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b836e928/567360103c9340d3970655e51dcd712d/FLAG3bf6e52cd [2020-08-19 04:23:37,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b836e928/567360103c9340d3970655e51dcd712d [2020-08-19 04:23:37,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:37,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:38,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:38,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:38,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:38,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:38,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ea2dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38, skipping insertion in model container [2020-08-19 04:23:38,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:38,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:38,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:38,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:38,285 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:38,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:38,341 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:38,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38 WrapperNode [2020-08-19 04:23:38,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:38,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:38,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:38,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:38,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (1/1) ... [2020-08-19 04:23:38,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:38,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:38,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:38,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:38,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (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 04:23:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:23:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:38,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:38,787 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:23:38,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:38 BoogieIcfgContainer [2020-08-19 04:23:38,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:38,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:38,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:38,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:38,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:37" (1/3) ... [2020-08-19 04:23:38,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67669970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:38, skipping insertion in model container [2020-08-19 04:23:38,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:38" (2/3) ... [2020-08-19 04:23:38,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67669970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:38, skipping insertion in model container [2020-08-19 04:23:38,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:38" (3/3) ... [2020-08-19 04:23:38,804 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-08-19 04:23:38,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:38,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:38,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:38,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:38,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:38,870 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:38,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:38,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:38,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:38,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:38,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-19 04:23:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 04:23:38,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,897 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 04:23:38,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1819770524, now seen corresponding path program 1 times [2020-08-19 04:23:38,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110519311] [2020-08-19 04:23:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,122 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 04:23:39,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110519311] [2020-08-19 04:23:39,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354822130] [2020-08-19 04:23:39,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,151 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-19 04:23:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,201 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-08-19 04:23:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 04:23:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,221 INFO L225 Difference]: With dead ends: 69 [2020-08-19 04:23:39,221 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 04:23:39,229 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 04:23:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 04:23:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-08-19 04:23:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 04:23:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 65 transitions. [2020-08-19 04:23:39,273 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 65 transitions. Word has length 17 [2020-08-19 04:23:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,274 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 65 transitions. [2020-08-19 04:23:39,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 65 transitions. [2020-08-19 04:23:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 04:23:39,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,276 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 04:23:39,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:39,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1426743514, now seen corresponding path program 1 times [2020-08-19 04:23:39,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703185429] [2020-08-19 04:23:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,334 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 04:23:39,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703185429] [2020-08-19 04:23:39,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739981810] [2020-08-19 04:23:39,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,338 INFO L87 Difference]: Start difference. First operand 38 states and 65 transitions. Second operand 3 states. [2020-08-19 04:23:39,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,384 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2020-08-19 04:23:39,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 04:23:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,387 INFO L225 Difference]: With dead ends: 87 [2020-08-19 04:23:39,387 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 04:23:39,390 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 04:23:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 04:23:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-08-19 04:23:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-19 04:23:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2020-08-19 04:23:39,403 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 17 [2020-08-19 04:23:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,404 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2020-08-19 04:23:39,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2020-08-19 04:23:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:23:39,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,406 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 04:23:39,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:23:39,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,407 INFO L82 PathProgramCache]: Analyzing trace with hash 578525748, now seen corresponding path program 1 times [2020-08-19 04:23:39,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823770450] [2020-08-19 04:23:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,475 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 04:23:39,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823770450] [2020-08-19 04:23:39,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672613417] [2020-08-19 04:23:39,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,478 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2020-08-19 04:23:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,501 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2020-08-19 04:23:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 04:23:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,503 INFO L225 Difference]: With dead ends: 81 [2020-08-19 04:23:39,504 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 04:23:39,504 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 04:23:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 04:23:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-08-19 04:23:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 04:23:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 91 transitions. [2020-08-19 04:23:39,514 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 91 transitions. Word has length 18 [2020-08-19 04:23:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,515 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 91 transitions. [2020-08-19 04:23:39,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,515 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2020-08-19 04:23:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:23:39,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,517 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 04:23:39,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:23:39,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1279590326, now seen corresponding path program 1 times [2020-08-19 04:23:39,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089600808] [2020-08-19 04:23:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,581 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 04:23:39,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089600808] [2020-08-19 04:23:39,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72438208] [2020-08-19 04:23:39,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,584 INFO L87 Difference]: Start difference. First operand 55 states and 91 transitions. Second operand 3 states. [2020-08-19 04:23:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,604 INFO L93 Difference]: Finished difference Result 100 states and 168 transitions. [2020-08-19 04:23:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 04:23:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,606 INFO L225 Difference]: With dead ends: 100 [2020-08-19 04:23:39,606 INFO L226 Difference]: Without dead ends: 98 [2020-08-19 04:23:39,607 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 04:23:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-19 04:23:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2020-08-19 04:23:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-19 04:23:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2020-08-19 04:23:39,618 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 18 [2020-08-19 04:23:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,618 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2020-08-19 04:23:39,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2020-08-19 04:23:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:23:39,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,620 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 04:23:39,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:23:39,620 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,621 INFO L82 PathProgramCache]: Analyzing trace with hash 886563316, now seen corresponding path program 1 times [2020-08-19 04:23:39,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497247397] [2020-08-19 04:23:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,651 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 04:23:39,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497247397] [2020-08-19 04:23:39,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639660386] [2020-08-19 04:23:39,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,654 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 3 states. [2020-08-19 04:23:39,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,679 INFO L93 Difference]: Finished difference Result 164 states and 278 transitions. [2020-08-19 04:23:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 04:23:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,681 INFO L225 Difference]: With dead ends: 164 [2020-08-19 04:23:39,681 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 04:23:39,682 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 04:23:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 04:23:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-08-19 04:23:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 04:23:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2020-08-19 04:23:39,694 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 18 [2020-08-19 04:23:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,694 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2020-08-19 04:23:39,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2020-08-19 04:23:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:23:39,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,696 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 04:23:39,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:23:39,696 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1012809135, now seen corresponding path program 1 times [2020-08-19 04:23:39,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233670396] [2020-08-19 04:23:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,742 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 04:23:39,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233670396] [2020-08-19 04:23:39,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648992653] [2020-08-19 04:23:39,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,745 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand 3 states. [2020-08-19 04:23:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,775 INFO L93 Difference]: Finished difference Result 147 states and 241 transitions. [2020-08-19 04:23:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 04:23:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,777 INFO L225 Difference]: With dead ends: 147 [2020-08-19 04:23:39,778 INFO L226 Difference]: Without dead ends: 102 [2020-08-19 04:23:39,779 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 04:23:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-19 04:23:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-08-19 04:23:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 04:23:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 162 transitions. [2020-08-19 04:23:39,790 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 162 transitions. Word has length 19 [2020-08-19 04:23:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,791 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 162 transitions. [2020-08-19 04:23:39,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 162 transitions. [2020-08-19 04:23:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:23:39,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,792 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 04:23:39,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:23:39,793 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1713873713, now seen corresponding path program 1 times [2020-08-19 04:23:39,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001776346] [2020-08-19 04:23:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,828 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 04:23:39,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001776346] [2020-08-19 04:23:39,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876858154] [2020-08-19 04:23:39,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,831 INFO L87 Difference]: Start difference. First operand 100 states and 162 transitions. Second operand 3 states. [2020-08-19 04:23:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,858 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2020-08-19 04:23:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 04:23:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,861 INFO L225 Difference]: With dead ends: 180 [2020-08-19 04:23:39,861 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 04:23:39,862 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 04:23:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 04:23:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2020-08-19 04:23:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 04:23:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2020-08-19 04:23:39,901 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 19 [2020-08-19 04:23:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,906 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2020-08-19 04:23:39,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,906 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2020-08-19 04:23:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:23:39,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,908 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 04:23:39,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:23:39,908 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1320846703, now seen corresponding path program 1 times [2020-08-19 04:23:39,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848896693] [2020-08-19 04:23:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,950 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 04:23:39,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848896693] [2020-08-19 04:23:39,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284962828] [2020-08-19 04:23:39,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,952 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand 3 states. [2020-08-19 04:23:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,974 INFO L93 Difference]: Finished difference Result 312 states and 504 transitions. [2020-08-19 04:23:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 04:23:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,976 INFO L225 Difference]: With dead ends: 312 [2020-08-19 04:23:39,977 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 04:23:39,978 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 04:23:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 04:23:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-08-19 04:23:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-08-19 04:23:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 290 transitions. [2020-08-19 04:23:39,992 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 290 transitions. Word has length 19 [2020-08-19 04:23:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,992 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 290 transitions. [2020-08-19 04:23:39,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 290 transitions. [2020-08-19 04:23:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:23:39,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:39,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:23:39,994 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692585, now seen corresponding path program 1 times [2020-08-19 04:23:39,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577210329] [2020-08-19 04:23:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,023 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 04:23:40,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577210329] [2020-08-19 04:23:40,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043806694] [2020-08-19 04:23:40,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,025 INFO L87 Difference]: Start difference. First operand 184 states and 290 transitions. Second operand 3 states. [2020-08-19 04:23:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,044 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2020-08-19 04:23:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 04:23:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,047 INFO L225 Difference]: With dead ends: 276 [2020-08-19 04:23:40,047 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 04:23:40,048 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 04:23:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 04:23:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-08-19 04:23:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-19 04:23:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 290 transitions. [2020-08-19 04:23:40,059 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 290 transitions. Word has length 20 [2020-08-19 04:23:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,059 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 290 transitions. [2020-08-19 04:23:40,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 290 transitions. [2020-08-19 04:23:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:23:40,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:23:40,061 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2003210133, now seen corresponding path program 1 times [2020-08-19 04:23:40,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48993967] [2020-08-19 04:23:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,085 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 04:23:40,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48993967] [2020-08-19 04:23:40,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785799691] [2020-08-19 04:23:40,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,087 INFO L87 Difference]: Start difference. First operand 188 states and 290 transitions. Second operand 3 states. [2020-08-19 04:23:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,108 INFO L93 Difference]: Finished difference Result 332 states and 520 transitions. [2020-08-19 04:23:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 04:23:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,110 INFO L225 Difference]: With dead ends: 332 [2020-08-19 04:23:40,111 INFO L226 Difference]: Without dead ends: 330 [2020-08-19 04:23:40,111 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 04:23:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-08-19 04:23:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-08-19 04:23:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 04:23:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 398 transitions. [2020-08-19 04:23:40,124 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 398 transitions. Word has length 20 [2020-08-19 04:23:40,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,124 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 398 transitions. [2020-08-19 04:23:40,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,124 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 398 transitions. [2020-08-19 04:23:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:23:40,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:23:40,127 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1898730153, now seen corresponding path program 1 times [2020-08-19 04:23:40,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051052566] [2020-08-19 04:23:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,158 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 04:23:40,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051052566] [2020-08-19 04:23:40,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465492464] [2020-08-19 04:23:40,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,160 INFO L87 Difference]: Start difference. First operand 264 states and 398 transitions. Second operand 3 states. [2020-08-19 04:23:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,185 INFO L93 Difference]: Finished difference Result 604 states and 912 transitions. [2020-08-19 04:23:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 04:23:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,188 INFO L225 Difference]: With dead ends: 604 [2020-08-19 04:23:40,188 INFO L226 Difference]: Without dead ends: 354 [2020-08-19 04:23:40,189 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 04:23:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-08-19 04:23:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-08-19 04:23:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-19 04:23:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2020-08-19 04:23:40,205 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 20 [2020-08-19 04:23:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,205 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2020-08-19 04:23:40,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2020-08-19 04:23:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 04:23:40,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:23:40,207 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1969756604, now seen corresponding path program 1 times [2020-08-19 04:23:40,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635431411] [2020-08-19 04:23:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,244 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 04:23:40,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635431411] [2020-08-19 04:23:40,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120616183] [2020-08-19 04:23:40,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,248 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand 3 states. [2020-08-19 04:23:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,270 INFO L93 Difference]: Finished difference Result 528 states and 772 transitions. [2020-08-19 04:23:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 04:23:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,272 INFO L225 Difference]: With dead ends: 528 [2020-08-19 04:23:40,273 INFO L226 Difference]: Without dead ends: 362 [2020-08-19 04:23:40,274 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 04:23:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-08-19 04:23:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2020-08-19 04:23:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-08-19 04:23:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 518 transitions. [2020-08-19 04:23:40,287 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 518 transitions. Word has length 21 [2020-08-19 04:23:40,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,287 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 518 transitions. [2020-08-19 04:23:40,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 518 transitions. [2020-08-19 04:23:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 04:23:40,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:23:40,289 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1268692026, now seen corresponding path program 1 times [2020-08-19 04:23:40,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515381878] [2020-08-19 04:23:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,311 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 04:23:40,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515381878] [2020-08-19 04:23:40,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862893715] [2020-08-19 04:23:40,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,313 INFO L87 Difference]: Start difference. First operand 360 states and 518 transitions. Second operand 3 states. [2020-08-19 04:23:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,335 INFO L93 Difference]: Finished difference Result 620 states and 904 transitions. [2020-08-19 04:23:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 04:23:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,339 INFO L225 Difference]: With dead ends: 620 [2020-08-19 04:23:40,339 INFO L226 Difference]: Without dead ends: 618 [2020-08-19 04:23:40,339 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 04:23:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-08-19 04:23:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 520. [2020-08-19 04:23:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-19 04:23:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 726 transitions. [2020-08-19 04:23:40,356 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 726 transitions. Word has length 21 [2020-08-19 04:23:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,356 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 726 transitions. [2020-08-19 04:23:40,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 726 transitions. [2020-08-19 04:23:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 04:23:40,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 04:23:40,359 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1661719036, now seen corresponding path program 1 times [2020-08-19 04:23:40,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938750140] [2020-08-19 04:23:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,379 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 04:23:40,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938750140] [2020-08-19 04:23:40,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137563452] [2020-08-19 04:23:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,381 INFO L87 Difference]: Start difference. First operand 520 states and 726 transitions. Second operand 3 states. [2020-08-19 04:23:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,406 INFO L93 Difference]: Finished difference Result 1180 states and 1640 transitions. [2020-08-19 04:23:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 04:23:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,410 INFO L225 Difference]: With dead ends: 1180 [2020-08-19 04:23:40,410 INFO L226 Difference]: Without dead ends: 682 [2020-08-19 04:23:40,411 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 04:23:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-19 04:23:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2020-08-19 04:23:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-08-19 04:23:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 918 transitions. [2020-08-19 04:23:40,433 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 918 transitions. Word has length 21 [2020-08-19 04:23:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,433 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 918 transitions. [2020-08-19 04:23:40,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 918 transitions. [2020-08-19 04:23:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 04:23:40,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 04:23:40,435 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,435 INFO L82 PathProgramCache]: Analyzing trace with hash -674531426, now seen corresponding path program 1 times [2020-08-19 04:23:40,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630970973] [2020-08-19 04:23:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,459 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 04:23:40,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630970973] [2020-08-19 04:23:40,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276173877] [2020-08-19 04:23:40,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,461 INFO L87 Difference]: Start difference. First operand 680 states and 918 transitions. Second operand 3 states. [2020-08-19 04:23:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,488 INFO L93 Difference]: Finished difference Result 1020 states and 1368 transitions. [2020-08-19 04:23:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 04:23:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,493 INFO L225 Difference]: With dead ends: 1020 [2020-08-19 04:23:40,493 INFO L226 Difference]: Without dead ends: 698 [2020-08-19 04:23:40,494 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 04:23:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-19 04:23:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2020-08-19 04:23:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-19 04:23:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2020-08-19 04:23:40,519 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 22 [2020-08-19 04:23:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,519 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2020-08-19 04:23:40,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2020-08-19 04:23:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 04:23:40,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 04:23:40,522 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,522 INFO L82 PathProgramCache]: Analyzing trace with hash 26533152, now seen corresponding path program 1 times [2020-08-19 04:23:40,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091412318] [2020-08-19 04:23:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,545 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 04:23:40,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091412318] [2020-08-19 04:23:40,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459378110] [2020-08-19 04:23:40,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,547 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 3 states. [2020-08-19 04:23:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,579 INFO L93 Difference]: Finished difference Result 1164 states and 1544 transitions. [2020-08-19 04:23:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 04:23:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,585 INFO L225 Difference]: With dead ends: 1164 [2020-08-19 04:23:40,585 INFO L226 Difference]: Without dead ends: 1162 [2020-08-19 04:23:40,586 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 04:23:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-08-19 04:23:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1032. [2020-08-19 04:23:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-08-19 04:23:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1318 transitions. [2020-08-19 04:23:40,628 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1318 transitions. Word has length 22 [2020-08-19 04:23:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,628 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1318 transitions. [2020-08-19 04:23:40,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1318 transitions. [2020-08-19 04:23:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 04:23:40,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 04:23:40,632 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,632 INFO L82 PathProgramCache]: Analyzing trace with hash -366493858, now seen corresponding path program 1 times [2020-08-19 04:23:40,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238042558] [2020-08-19 04:23:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,655 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 04:23:40,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238042558] [2020-08-19 04:23:40,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654568527] [2020-08-19 04:23:40,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,658 INFO L87 Difference]: Start difference. First operand 1032 states and 1318 transitions. Second operand 3 states. [2020-08-19 04:23:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,705 INFO L93 Difference]: Finished difference Result 2316 states and 2920 transitions. [2020-08-19 04:23:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 04:23:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,715 INFO L225 Difference]: With dead ends: 2316 [2020-08-19 04:23:40,715 INFO L226 Difference]: Without dead ends: 1322 [2020-08-19 04:23:40,718 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 04:23:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-08-19 04:23:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2020-08-19 04:23:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-08-19 04:23:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1606 transitions. [2020-08-19 04:23:40,778 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1606 transitions. Word has length 22 [2020-08-19 04:23:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,779 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 1606 transitions. [2020-08-19 04:23:40,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1606 transitions. [2020-08-19 04:23:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 04:23:40,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 04:23:40,783 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash 822743769, now seen corresponding path program 1 times [2020-08-19 04:23:40,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768711397] [2020-08-19 04:23:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,803 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 04:23:40,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768711397] [2020-08-19 04:23:40,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012247429] [2020-08-19 04:23:40,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,805 INFO L87 Difference]: Start difference. First operand 1320 states and 1606 transitions. Second operand 3 states. [2020-08-19 04:23:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,850 INFO L93 Difference]: Finished difference Result 1980 states and 2392 transitions. [2020-08-19 04:23:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 04:23:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,859 INFO L225 Difference]: With dead ends: 1980 [2020-08-19 04:23:40,860 INFO L226 Difference]: Without dead ends: 1354 [2020-08-19 04:23:40,862 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 04:23:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-19 04:23:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2020-08-19 04:23:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-08-19 04:23:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1606 transitions. [2020-08-19 04:23:40,914 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1606 transitions. Word has length 23 [2020-08-19 04:23:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,915 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1606 transitions. [2020-08-19 04:23:40,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1606 transitions. [2020-08-19 04:23:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 04:23:40,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:40,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 04:23:40,918 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1523808347, now seen corresponding path program 1 times [2020-08-19 04:23:40,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70733957] [2020-08-19 04:23:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,940 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 04:23:40,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70733957] [2020-08-19 04:23:40,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:40,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359114984] [2020-08-19 04:23:40,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:40,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:40,943 INFO L87 Difference]: Start difference. First operand 1352 states and 1606 transitions. Second operand 3 states. [2020-08-19 04:23:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,991 INFO L93 Difference]: Finished difference Result 2186 states and 2567 transitions. [2020-08-19 04:23:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:40,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 04:23:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:41,001 INFO L225 Difference]: With dead ends: 2186 [2020-08-19 04:23:41,002 INFO L226 Difference]: Without dead ends: 2184 [2020-08-19 04:23:41,003 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 04:23:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-08-19 04:23:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2056. [2020-08-19 04:23:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-08-19 04:23:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2374 transitions. [2020-08-19 04:23:41,061 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2374 transitions. Word has length 23 [2020-08-19 04:23:41,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:41,062 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2374 transitions. [2020-08-19 04:23:41,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2374 transitions. [2020-08-19 04:23:41,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 04:23:41,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:41,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:41,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 04:23:41,066 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:41,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1130781337, now seen corresponding path program 1 times [2020-08-19 04:23:41,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:41,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660055086] [2020-08-19 04:23:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,083 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 04:23:41,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660055086] [2020-08-19 04:23:41,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:41,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:41,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059055957] [2020-08-19 04:23:41,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:41,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:41,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:41,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:41,085 INFO L87 Difference]: Start difference. First operand 2056 states and 2374 transitions. Second operand 3 states. [2020-08-19 04:23:41,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:41,165 INFO L93 Difference]: Finished difference Result 4552 states and 5126 transitions. [2020-08-19 04:23:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:41,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 04:23:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:41,167 INFO L225 Difference]: With dead ends: 4552 [2020-08-19 04:23:41,167 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:23:41,174 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 04:23:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:23:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:23:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:23:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:23:41,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-19 04:23:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:41,175 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:23:41,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:23:41,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:23:41,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 04:23:41,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:23:41,198 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 04:23:41,199 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:23:41,199 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:23:41,199 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:23:41,199 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:23:41,199 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:23:41,199 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-08-19 04:23:41,199 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-08-19 04:23:41,199 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,200 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-08-19 04:23:41,200 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-08-19 04:23:41,200 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-08-19 04:23:41,200 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-08-19 04:23:41,200 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-08-19 04:23:41,200 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,200 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-08-19 04:23:41,200 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-08-19 04:23:41,201 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,202 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-08-19 04:23:41,202 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-08-19 04:23:41,203 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,203 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 04:23:41,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:23:41 BoogieIcfgContainer [2020-08-19 04:23:41,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:23:41,216 INFO L168 Benchmark]: Toolchain (without parser) took 3216.69 ms. Allocated memory was 141.6 MB in the beginning and 243.8 MB in the end (delta: 102.2 MB). Free memory was 105.1 MB in the beginning and 197.9 MB in the end (delta: -92.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:41,217 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:23:41,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.76 ms. Allocated memory is still 141.6 MB. Free memory was 104.7 MB in the beginning and 94.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:41,218 INFO L168 Benchmark]: Boogie Preprocessor took 132.34 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 94.5 MB in the beginning and 181.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:41,219 INFO L168 Benchmark]: RCFGBuilder took 316.13 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 164.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:41,220 INFO L168 Benchmark]: TraceAbstraction took 2421.02 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 164.1 MB in the beginning and 197.9 MB in the end (delta: -33.8 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:41,223 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.76 ms. Allocated memory is still 141.6 MB. Free memory was 104.7 MB in the beginning and 94.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.34 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 94.5 MB in the beginning and 181.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.13 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 164.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2421.02 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 164.1 MB in the beginning and 197.9 MB in the end (delta: -33.8 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: 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: 30]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1238 SDtfs, 574 SDslu, 829 SDs, 0 SdLazy, 107 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2056occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 530 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 138 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 13856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...