/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.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:36:58,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:36:58,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:36:58,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:36:58,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:36:58,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:36:58,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:36:58,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:36:58,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:36:58,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:36:58,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:36:58,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:36:58,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:36:58,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:36:58,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:36:58,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:36:58,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:36:58,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:36:58,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:36:58,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:36:58,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:36:58,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:36:58,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:36:58,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:36:58,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:36:58,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:36:58,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:36:58,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:36:58,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 03:36:58,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:36:58,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:36:58,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:36:58,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:36:58,776 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:36:58,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:36:58,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:36:58,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:36:58,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:36:58,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:36:58,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:36:58,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:36:58,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:36:58,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:36:58,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:36:58,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:36:58,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:36:58,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:36:58,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:36:58,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:36:58,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:36:58,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:36:58,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:36:58,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:36:58,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:36:58,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:36:58,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:36:58,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:36:58,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:36:58,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:36:59,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:36:59,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:36:59,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:36:59,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:36:59,060 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:36:59,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-07-20 03:36:59,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373deae6f/7cdde4495e3943d8ab0a4ed84fd29b5f/FLAGb6591bcf4 [2020-07-20 03:36:59,592 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:36:59,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_7.c [2020-07-20 03:36:59,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373deae6f/7cdde4495e3943d8ab0a4ed84fd29b5f/FLAGb6591bcf4 [2020-07-20 03:36:59,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373deae6f/7cdde4495e3943d8ab0a4ed84fd29b5f [2020-07-20 03:36:59,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:36:59,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:36:59,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:59,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:36:59,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:36:59,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30afca32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59, skipping insertion in model container [2020-07-20 03:36:59,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:37:00,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:37:00,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:37:00,193 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:37:00,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:37:00,225 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:37:00,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00 WrapperNode [2020-07-20 03:37:00,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:37:00,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:37:00,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:37:00,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:37:00,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... [2020-07-20 03:37:00,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:37:00,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:37:00,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:37:00,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:37:00,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:37:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:37:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:37:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:37:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:37:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:37:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:37:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:37:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:37:00,683 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:37:00,683 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 03:37:00,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:37:00 BoogieIcfgContainer [2020-07-20 03:37:00,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:37:00,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:37:00,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:37:00,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:37:00,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:36:59" (1/3) ... [2020-07-20 03:37:00,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704c2781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:37:00, skipping insertion in model container [2020-07-20 03:37:00,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:37:00" (2/3) ... [2020-07-20 03:37:00,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704c2781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:37:00, skipping insertion in model container [2020-07-20 03:37:00,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:37:00" (3/3) ... [2020-07-20 03:37:00,720 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-07-20 03:37:00,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:37:00,760 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:37:00,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:37:00,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:37:00,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:37:00,799 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:37:00,799 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:37:00,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:37:00,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:37:00,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:37:00,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:37:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-20 03:37:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:37:00,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1819770524, now seen corresponding path program 1 times [2020-07-20 03:37:00,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751993334] [2020-07-20 03:37:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751993334] [2020-07-20 03:37:01,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299491755] [2020-07-20 03:37:01,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,036 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-20 03:37:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,097 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-07-20 03:37:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 03:37:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,110 INFO L225 Difference]: With dead ends: 69 [2020-07-20 03:37:01,110 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 03:37:01,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 03:37:01,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-07-20 03:37:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 03:37:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 65 transitions. [2020-07-20 03:37:01,156 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 65 transitions. Word has length 17 [2020-07-20 03:37:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,157 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 65 transitions. [2020-07-20 03:37:01,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 65 transitions. [2020-07-20 03:37:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:37:01,158 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:37:01,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1426743514, now seen corresponding path program 1 times [2020-07-20 03:37:01,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054523187] [2020-07-20 03:37:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054523187] [2020-07-20 03:37:01,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892553983] [2020-07-20 03:37:01,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,233 INFO L87 Difference]: Start difference. First operand 38 states and 65 transitions. Second operand 3 states. [2020-07-20 03:37:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,262 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2020-07-20 03:37:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 03:37:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,265 INFO L225 Difference]: With dead ends: 87 [2020-07-20 03:37:01,265 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 03:37:01,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 03:37:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-07-20 03:37:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 03:37:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2020-07-20 03:37:01,277 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 17 [2020-07-20 03:37:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,278 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2020-07-20 03:37:01,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2020-07-20 03:37:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:37:01,279 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:37:01,280 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,280 INFO L82 PathProgramCache]: Analyzing trace with hash 578525748, now seen corresponding path program 1 times [2020-07-20 03:37:01,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322731004] [2020-07-20 03:37:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322731004] [2020-07-20 03:37:01,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170390978] [2020-07-20 03:37:01,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,331 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2020-07-20 03:37:01,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,362 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2020-07-20 03:37:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 03:37:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,365 INFO L225 Difference]: With dead ends: 81 [2020-07-20 03:37:01,366 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 03:37:01,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 03:37:01,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-07-20 03:37:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 03:37:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 91 transitions. [2020-07-20 03:37:01,378 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 91 transitions. Word has length 18 [2020-07-20 03:37:01,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,378 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 91 transitions. [2020-07-20 03:37:01,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2020-07-20 03:37:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:37:01,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:37:01,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1279590326, now seen corresponding path program 1 times [2020-07-20 03:37:01,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751910098] [2020-07-20 03:37:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751910098] [2020-07-20 03:37:01,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184212094] [2020-07-20 03:37:01,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,445 INFO L87 Difference]: Start difference. First operand 55 states and 91 transitions. Second operand 3 states. [2020-07-20 03:37:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,476 INFO L93 Difference]: Finished difference Result 100 states and 168 transitions. [2020-07-20 03:37:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 03:37:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,478 INFO L225 Difference]: With dead ends: 100 [2020-07-20 03:37:01,479 INFO L226 Difference]: Without dead ends: 98 [2020-07-20 03:37:01,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-20 03:37:01,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2020-07-20 03:37:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-20 03:37:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2020-07-20 03:37:01,493 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 18 [2020-07-20 03:37:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,496 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2020-07-20 03:37:01,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2020-07-20 03:37:01,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:37:01,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:37:01,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,499 INFO L82 PathProgramCache]: Analyzing trace with hash 886563316, now seen corresponding path program 1 times [2020-07-20 03:37:01,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982584114] [2020-07-20 03:37:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982584114] [2020-07-20 03:37:01,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067459088] [2020-07-20 03:37:01,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,538 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 3 states. [2020-07-20 03:37:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,561 INFO L93 Difference]: Finished difference Result 164 states and 278 transitions. [2020-07-20 03:37:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 03:37:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,563 INFO L225 Difference]: With dead ends: 164 [2020-07-20 03:37:01,563 INFO L226 Difference]: Without dead ends: 100 [2020-07-20 03:37:01,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-20 03:37:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-07-20 03:37:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-20 03:37:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2020-07-20 03:37:01,574 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 18 [2020-07-20 03:37:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,574 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2020-07-20 03:37:01,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2020-07-20 03:37:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:37:01,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:37:01,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1012809135, now seen corresponding path program 1 times [2020-07-20 03:37:01,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382297875] [2020-07-20 03:37:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382297875] [2020-07-20 03:37:01,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696119520] [2020-07-20 03:37:01,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,630 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand 3 states. [2020-07-20 03:37:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,667 INFO L93 Difference]: Finished difference Result 147 states and 241 transitions. [2020-07-20 03:37:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 03:37:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,670 INFO L225 Difference]: With dead ends: 147 [2020-07-20 03:37:01,670 INFO L226 Difference]: Without dead ends: 102 [2020-07-20 03:37:01,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-20 03:37:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-07-20 03:37:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-20 03:37:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 162 transitions. [2020-07-20 03:37:01,692 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 162 transitions. Word has length 19 [2020-07-20 03:37:01,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,693 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 162 transitions. [2020-07-20 03:37:01,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 162 transitions. [2020-07-20 03:37:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:37:01,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:37:01,695 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1713873713, now seen corresponding path program 1 times [2020-07-20 03:37:01,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479125337] [2020-07-20 03:37:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479125337] [2020-07-20 03:37:01,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200086652] [2020-07-20 03:37:01,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,729 INFO L87 Difference]: Start difference. First operand 100 states and 162 transitions. Second operand 3 states. [2020-07-20 03:37:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,749 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2020-07-20 03:37:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 03:37:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,751 INFO L225 Difference]: With dead ends: 180 [2020-07-20 03:37:01,751 INFO L226 Difference]: Without dead ends: 178 [2020-07-20 03:37:01,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-20 03:37:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2020-07-20 03:37:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-20 03:37:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2020-07-20 03:37:01,766 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 19 [2020-07-20 03:37:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,766 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2020-07-20 03:37:01,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2020-07-20 03:37:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:37:01,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 03:37:01,769 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1320846703, now seen corresponding path program 1 times [2020-07-20 03:37:01,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733315920] [2020-07-20 03:37:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733315920] [2020-07-20 03:37:01,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199183838] [2020-07-20 03:37:01,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,803 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand 3 states. [2020-07-20 03:37:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,837 INFO L93 Difference]: Finished difference Result 312 states and 504 transitions. [2020-07-20 03:37:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 03:37:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,839 INFO L225 Difference]: With dead ends: 312 [2020-07-20 03:37:01,839 INFO L226 Difference]: Without dead ends: 186 [2020-07-20 03:37:01,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-07-20 03:37:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-07-20 03:37:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-20 03:37:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 290 transitions. [2020-07-20 03:37:01,853 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 290 transitions. Word has length 19 [2020-07-20 03:37:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,853 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 290 transitions. [2020-07-20 03:37:01,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 290 transitions. [2020-07-20 03:37:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:37:01,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 03:37:01,856 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692585, now seen corresponding path program 1 times [2020-07-20 03:37:01,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496442730] [2020-07-20 03:37:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496442730] [2020-07-20 03:37:01,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931289292] [2020-07-20 03:37:01,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,888 INFO L87 Difference]: Start difference. First operand 184 states and 290 transitions. Second operand 3 states. [2020-07-20 03:37:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,908 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2020-07-20 03:37:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 03:37:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,910 INFO L225 Difference]: With dead ends: 276 [2020-07-20 03:37:01,911 INFO L226 Difference]: Without dead ends: 190 [2020-07-20 03:37:01,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-20 03:37:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-07-20 03:37:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-20 03:37:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 290 transitions. [2020-07-20 03:37:01,922 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 290 transitions. Word has length 20 [2020-07-20 03:37:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,923 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 290 transitions. [2020-07-20 03:37:01,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 290 transitions. [2020-07-20 03:37:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:37:01,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,925 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] [2020-07-20 03:37:01,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 03:37:01,925 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2003210133, now seen corresponding path program 1 times [2020-07-20 03:37:01,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409980092] [2020-07-20 03:37:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409980092] [2020-07-20 03:37:01,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241707973] [2020-07-20 03:37:01,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,954 INFO L87 Difference]: Start difference. First operand 188 states and 290 transitions. Second operand 3 states. [2020-07-20 03:37:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,973 INFO L93 Difference]: Finished difference Result 332 states and 520 transitions. [2020-07-20 03:37:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 03:37:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,976 INFO L225 Difference]: With dead ends: 332 [2020-07-20 03:37:01,976 INFO L226 Difference]: Without dead ends: 330 [2020-07-20 03:37:01,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-07-20 03:37:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-07-20 03:37:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-07-20 03:37:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 398 transitions. [2020-07-20 03:37:01,988 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 398 transitions. Word has length 20 [2020-07-20 03:37:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,989 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 398 transitions. [2020-07-20 03:37:01,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 398 transitions. [2020-07-20 03:37:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:37:01,991 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,991 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] [2020-07-20 03:37:01,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 03:37:01,991 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1898730153, now seen corresponding path program 1 times [2020-07-20 03:37:01,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679046743] [2020-07-20 03:37:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679046743] [2020-07-20 03:37:02,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724806807] [2020-07-20 03:37:02,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,016 INFO L87 Difference]: Start difference. First operand 264 states and 398 transitions. Second operand 3 states. [2020-07-20 03:37:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,041 INFO L93 Difference]: Finished difference Result 604 states and 912 transitions. [2020-07-20 03:37:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 03:37:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,043 INFO L225 Difference]: With dead ends: 604 [2020-07-20 03:37:02,043 INFO L226 Difference]: Without dead ends: 354 [2020-07-20 03:37:02,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-07-20 03:37:02,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-07-20 03:37:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-07-20 03:37:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2020-07-20 03:37:02,060 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 20 [2020-07-20 03:37:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,060 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2020-07-20 03:37:02,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2020-07-20 03:37:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:37:02,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,063 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] [2020-07-20 03:37:02,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 03:37:02,063 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1969756604, now seen corresponding path program 1 times [2020-07-20 03:37:02,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179427869] [2020-07-20 03:37:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179427869] [2020-07-20 03:37:02,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128095135] [2020-07-20 03:37:02,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,089 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand 3 states. [2020-07-20 03:37:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,110 INFO L93 Difference]: Finished difference Result 528 states and 772 transitions. [2020-07-20 03:37:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:37:02,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,113 INFO L225 Difference]: With dead ends: 528 [2020-07-20 03:37:02,113 INFO L226 Difference]: Without dead ends: 362 [2020-07-20 03:37:02,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-20 03:37:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2020-07-20 03:37:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-07-20 03:37:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 518 transitions. [2020-07-20 03:37:02,128 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 518 transitions. Word has length 21 [2020-07-20 03:37:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,128 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 518 transitions. [2020-07-20 03:37:02,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 518 transitions. [2020-07-20 03:37:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:37:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,130 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] [2020-07-20 03:37:02,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 03:37:02,130 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1268692026, now seen corresponding path program 1 times [2020-07-20 03:37:02,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340827254] [2020-07-20 03:37:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340827254] [2020-07-20 03:37:02,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057600675] [2020-07-20 03:37:02,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,155 INFO L87 Difference]: Start difference. First operand 360 states and 518 transitions. Second operand 3 states. [2020-07-20 03:37:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,175 INFO L93 Difference]: Finished difference Result 620 states and 904 transitions. [2020-07-20 03:37:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:37:02,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,180 INFO L225 Difference]: With dead ends: 620 [2020-07-20 03:37:02,180 INFO L226 Difference]: Without dead ends: 618 [2020-07-20 03:37:02,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-07-20 03:37:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 520. [2020-07-20 03:37:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-07-20 03:37:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 726 transitions. [2020-07-20 03:37:02,198 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 726 transitions. Word has length 21 [2020-07-20 03:37:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,198 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 726 transitions. [2020-07-20 03:37:02,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 726 transitions. [2020-07-20 03:37:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:37:02,200 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,200 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] [2020-07-20 03:37:02,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 03:37:02,201 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1661719036, now seen corresponding path program 1 times [2020-07-20 03:37:02,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996566704] [2020-07-20 03:37:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996566704] [2020-07-20 03:37:02,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130996818] [2020-07-20 03:37:02,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,225 INFO L87 Difference]: Start difference. First operand 520 states and 726 transitions. Second operand 3 states. [2020-07-20 03:37:02,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,258 INFO L93 Difference]: Finished difference Result 1180 states and 1640 transitions. [2020-07-20 03:37:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:37:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,262 INFO L225 Difference]: With dead ends: 1180 [2020-07-20 03:37:02,263 INFO L226 Difference]: Without dead ends: 682 [2020-07-20 03:37:02,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-07-20 03:37:02,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2020-07-20 03:37:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-07-20 03:37:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 918 transitions. [2020-07-20 03:37:02,288 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 918 transitions. Word has length 21 [2020-07-20 03:37:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,289 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 918 transitions. [2020-07-20 03:37:02,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 918 transitions. [2020-07-20 03:37:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:37:02,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,291 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] [2020-07-20 03:37:02,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 03:37:02,291 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,292 INFO L82 PathProgramCache]: Analyzing trace with hash -674531426, now seen corresponding path program 1 times [2020-07-20 03:37:02,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774740996] [2020-07-20 03:37:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774740996] [2020-07-20 03:37:02,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581499005] [2020-07-20 03:37:02,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,333 INFO L87 Difference]: Start difference. First operand 680 states and 918 transitions. Second operand 3 states. [2020-07-20 03:37:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,360 INFO L93 Difference]: Finished difference Result 1020 states and 1368 transitions. [2020-07-20 03:37:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 03:37:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,365 INFO L225 Difference]: With dead ends: 1020 [2020-07-20 03:37:02,365 INFO L226 Difference]: Without dead ends: 698 [2020-07-20 03:37:02,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-07-20 03:37:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2020-07-20 03:37:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-07-20 03:37:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2020-07-20 03:37:02,394 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 22 [2020-07-20 03:37:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,394 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2020-07-20 03:37:02,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2020-07-20 03:37:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:37:02,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,396 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] [2020-07-20 03:37:02,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 03:37:02,397 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,397 INFO L82 PathProgramCache]: Analyzing trace with hash 26533152, now seen corresponding path program 1 times [2020-07-20 03:37:02,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182228956] [2020-07-20 03:37:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182228956] [2020-07-20 03:37:02,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534834172] [2020-07-20 03:37:02,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,444 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 3 states. [2020-07-20 03:37:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,488 INFO L93 Difference]: Finished difference Result 1164 states and 1544 transitions. [2020-07-20 03:37:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 03:37:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,497 INFO L225 Difference]: With dead ends: 1164 [2020-07-20 03:37:02,498 INFO L226 Difference]: Without dead ends: 1162 [2020-07-20 03:37:02,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-07-20 03:37:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1032. [2020-07-20 03:37:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-07-20 03:37:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1318 transitions. [2020-07-20 03:37:02,551 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1318 transitions. Word has length 22 [2020-07-20 03:37:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,552 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1318 transitions. [2020-07-20 03:37:02,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1318 transitions. [2020-07-20 03:37:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:37:02,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,560 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] [2020-07-20 03:37:02,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 03:37:02,561 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash -366493858, now seen corresponding path program 1 times [2020-07-20 03:37:02,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777232122] [2020-07-20 03:37:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777232122] [2020-07-20 03:37:02,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74868550] [2020-07-20 03:37:02,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,622 INFO L87 Difference]: Start difference. First operand 1032 states and 1318 transitions. Second operand 3 states. [2020-07-20 03:37:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,698 INFO L93 Difference]: Finished difference Result 2316 states and 2920 transitions. [2020-07-20 03:37:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 03:37:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,705 INFO L225 Difference]: With dead ends: 2316 [2020-07-20 03:37:02,706 INFO L226 Difference]: Without dead ends: 1322 [2020-07-20 03:37:02,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-07-20 03:37:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2020-07-20 03:37:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-07-20 03:37:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1606 transitions. [2020-07-20 03:37:02,774 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1606 transitions. Word has length 22 [2020-07-20 03:37:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,775 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 1606 transitions. [2020-07-20 03:37:02,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1606 transitions. [2020-07-20 03:37:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:37:02,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,778 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] [2020-07-20 03:37:02,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 03:37:02,779 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,779 INFO L82 PathProgramCache]: Analyzing trace with hash 822743769, now seen corresponding path program 1 times [2020-07-20 03:37:02,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012065134] [2020-07-20 03:37:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012065134] [2020-07-20 03:37:02,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338581824] [2020-07-20 03:37:02,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,820 INFO L87 Difference]: Start difference. First operand 1320 states and 1606 transitions. Second operand 3 states. [2020-07-20 03:37:02,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,875 INFO L93 Difference]: Finished difference Result 1980 states and 2392 transitions. [2020-07-20 03:37:02,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:37:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,884 INFO L225 Difference]: With dead ends: 1980 [2020-07-20 03:37:02,885 INFO L226 Difference]: Without dead ends: 1354 [2020-07-20 03:37:02,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-07-20 03:37:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2020-07-20 03:37:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-07-20 03:37:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1606 transitions. [2020-07-20 03:37:02,933 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1606 transitions. Word has length 23 [2020-07-20 03:37:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,934 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1606 transitions. [2020-07-20 03:37:02,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1606 transitions. [2020-07-20 03:37:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:37:02,939 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,939 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] [2020-07-20 03:37:02,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 03:37:02,939 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1523808347, now seen corresponding path program 1 times [2020-07-20 03:37:02,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193192810] [2020-07-20 03:37:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193192810] [2020-07-20 03:37:02,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778742198] [2020-07-20 03:37:02,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,968 INFO L87 Difference]: Start difference. First operand 1352 states and 1606 transitions. Second operand 3 states. [2020-07-20 03:37:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:03,016 INFO L93 Difference]: Finished difference Result 2186 states and 2567 transitions. [2020-07-20 03:37:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:03,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:37:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:03,028 INFO L225 Difference]: With dead ends: 2186 [2020-07-20 03:37:03,028 INFO L226 Difference]: Without dead ends: 2184 [2020-07-20 03:37:03,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-07-20 03:37:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2056. [2020-07-20 03:37:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-07-20 03:37:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2374 transitions. [2020-07-20 03:37:03,090 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2374 transitions. Word has length 23 [2020-07-20 03:37:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:03,090 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2374 transitions. [2020-07-20 03:37:03,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2374 transitions. [2020-07-20 03:37:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:37:03,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:03,095 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] [2020-07-20 03:37:03,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 03:37:03,096 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1130781337, now seen corresponding path program 1 times [2020-07-20 03:37:03,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:03,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558090798] [2020-07-20 03:37:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35742139 [2020-07-20 03:37:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:03,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558090798] [2020-07-20 03:37:03,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:03,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:03,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011840240] [2020-07-20 03:37:03,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:03,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:03,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:03,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:03,127 INFO L87 Difference]: Start difference. First operand 2056 states and 2374 transitions. Second operand 3 states. [2020-07-20 03:37:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:03,204 INFO L93 Difference]: Finished difference Result 4552 states and 5126 transitions. [2020-07-20 03:37:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:03,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:37:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:03,205 INFO L225 Difference]: With dead ends: 4552 [2020-07-20 03:37:03,205 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:37:03,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:37:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:37:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:37:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:37:03,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-07-20 03:37:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:03,214 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:37:03,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:37:03,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:37:03,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 03:37:03,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:37:03,242 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 03:37:03,242 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:37:03,243 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 03:37:03,243 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,244 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,245 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-07-20 03:37:03,246 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-07-20 03:37:03,246 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,246 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-07-20 03:37:03,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:37:03 BoogieIcfgContainer [2020-07-20 03:37:03,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:37:03,259 INFO L168 Benchmark]: Toolchain (without parser) took 3280.92 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 102.7 MB in the beginning and 100.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:03,260 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 03:37:03,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 138.4 MB. Free memory was 102.3 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:03,261 INFO L168 Benchmark]: Boogie Preprocessor took 113.70 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 180.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:03,262 INFO L168 Benchmark]: RCFGBuilder took 347.85 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 163.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:03,263 INFO L168 Benchmark]: TraceAbstraction took 2557.55 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 163.2 MB in the beginning and 100.7 MB in the end (delta: 62.4 MB). Peak memory consumption was 107.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:03,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 138.4 MB. Free memory was 102.3 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.70 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 180.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.85 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 163.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2557.55 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 163.2 MB in the beginning and 100.7 MB in the end (delta: 62.4 MB). Peak memory consumption was 107.0 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: 2.4s, 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, 0.2s 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, 0.1s 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...