/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 NUM_FUNCTIONS --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/recursive/Fibonacci02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:02:18,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:02:18,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:02:18,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:02:18,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:02:18,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:02:18,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:02:18,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:02:18,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:02:18,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:02:18,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:02:18,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:02:18,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:02:18,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:02:18,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:02:18,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:02:18,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:02:18,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:02:18,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:02:18,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:02:18,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:02:18,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:02:18,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:02:18,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:02:18,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:02:18,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:02:18,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:02:18,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:02:18,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:02:18,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-19 23:02:18,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:02:18,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:02:18,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:02:18,514 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 [2020-07-19 23:02:18,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:02:18,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:02:18,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:02:18,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:02:18,554 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:02:18,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:02:18,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:02:18,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:02:18,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:02:18,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:02:18,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:02:18,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:02:18,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:02:18,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:02:18,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:02:18,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:02:18,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:02:18,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:02:18,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:02:18,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:02:18,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:02:18,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:02:18,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:02:18,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-19 23:02:18,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:02:18,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:02:18,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:02:18,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:02:18,835 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:02:18,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci02.c [2020-07-19 23:02:18,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d2af017/6e59d612600542aeab9decc600193d80/FLAGe7b678ce2 [2020-07-19 23:02:19,353 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:02:19,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci02.c [2020-07-19 23:02:19,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d2af017/6e59d612600542aeab9decc600193d80/FLAGe7b678ce2 [2020-07-19 23:02:19,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d2af017/6e59d612600542aeab9decc600193d80 [2020-07-19 23:02:19,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:02:19,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:02:19,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:02:19,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:02:19,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:02:19,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:02:19" (1/1) ... [2020-07-19 23:02:19,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6429128a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:19, skipping insertion in model container [2020-07-19 23:02:19,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:02:19" (1/1) ... [2020-07-19 23:02:19,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:02:19,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:02:19,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:02:19,985 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:02:20,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:02:20,013 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:02:20,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20 WrapperNode [2020-07-19 23:02:20,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:02:20,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:02:20,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:02:20,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:02:20,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (1/1) ... [2020-07-19 23:02:20,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:02:20,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:02:20,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:02:20,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:02:20,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (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 [2020-07-19 23:02:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:02:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:02:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-19 23:02:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:02:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:02:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:02:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-19 23:02:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:02:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:02:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:02:20,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:02:20,336 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 23:02:20,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:02:20 BoogieIcfgContainer [2020-07-19 23:02:20,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:02:20,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:02:20,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:02:20,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:02:20,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:02:19" (1/3) ... [2020-07-19 23:02:20,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dab3c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:02:20, skipping insertion in model container [2020-07-19 23:02:20,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:20" (2/3) ... [2020-07-19 23:02:20,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dab3c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:02:20, skipping insertion in model container [2020-07-19 23:02:20,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:02:20" (3/3) ... [2020-07-19 23:02:20,347 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-07-19 23:02:20,356 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:02:20,363 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:02:20,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:02:20,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:02:20,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:02:20,397 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:02:20,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:02:20,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:02:20,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:02:20,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:02:20,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:02:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-19 23:02:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:02:20,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:20,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:20,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1356498376, now seen corresponding path program 1 times [2020-07-19 23:02:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:20,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822425967] [2020-07-19 23:02:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:02:20,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822425967] [2020-07-19 23:02:20,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:02:20,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:02:20,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008945797] [2020-07-19 23:02:20,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:02:20,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:02:20,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:02:20,651 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-07-19 23:02:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:20,750 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-07-19 23:02:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:02:20,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-19 23:02:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:20,764 INFO L225 Difference]: With dead ends: 33 [2020-07-19 23:02:20,765 INFO L226 Difference]: Without dead ends: 21 [2020-07-19 23:02:20,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:02:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-19 23:02:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-19 23:02:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-19 23:02:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-19 23:02:20,818 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-07-19 23:02:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:20,819 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-19 23:02:20,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:02:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-19 23:02:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 23:02:20,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:20,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:20,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:02:20,822 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1591396412, now seen corresponding path program 1 times [2020-07-19 23:02:20,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:20,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174758866] [2020-07-19 23:02:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:02:20,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174758866] [2020-07-19 23:02:20,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:02:20,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:02:20,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593953049] [2020-07-19 23:02:20,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:02:20,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:02:20,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:02:20,900 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-07-19 23:02:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:20,977 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-07-19 23:02:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:02:20,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-19 23:02:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:20,979 INFO L225 Difference]: With dead ends: 27 [2020-07-19 23:02:20,979 INFO L226 Difference]: Without dead ends: 23 [2020-07-19 23:02:20,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:02:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-19 23:02:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-19 23:02:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-19 23:02:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-19 23:02:20,989 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-07-19 23:02:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:20,990 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-19 23:02:20,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:02:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-19 23:02:20,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 23:02:20,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:20,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:20,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:02:20,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:20,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1761048597, now seen corresponding path program 1 times [2020-07-19 23:02:20,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:20,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768866283] [2020-07-19 23:02:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:02:21,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768866283] [2020-07-19 23:02:21,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669560669] [2020-07-19 23:02:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c7d7c48 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:21,186 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c7d7c48 issued 3 check-sat command(s) [2020-07-19 23:02:21,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:21,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 23:02:21,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:02:21,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:21,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-07-19 23:02:21,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160530100] [2020-07-19 23:02:21,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:02:21,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:21,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:02:21,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:02:21,265 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2020-07-19 23:02:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:21,380 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-07-19 23:02:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 23:02:21,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-19 23:02:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:21,382 INFO L225 Difference]: With dead ends: 38 [2020-07-19 23:02:21,382 INFO L226 Difference]: Without dead ends: 23 [2020-07-19 23:02:21,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:02:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-19 23:02:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-19 23:02:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-19 23:02:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-19 23:02:21,391 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-07-19 23:02:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:21,392 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-19 23:02:21,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:02:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-19 23:02:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 23:02:21,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:21,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:21,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:02:21,611 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash -624449707, now seen corresponding path program 1 times [2020-07-19 23:02:21,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:21,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343268666] [2020-07-19 23:02:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-19 23:02:21,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343268666] [2020-07-19 23:02:21,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484625046] [2020-07-19 23:02:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a99c8cd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:21,765 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a99c8cd issued 3 check-sat command(s) [2020-07-19 23:02:21,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:21,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 23:02:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-19 23:02:21,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:21,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-19 23:02:21,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096725159] [2020-07-19 23:02:21,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:02:21,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:21,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:02:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:02:21,794 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-07-19 23:02:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:21,882 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-07-19 23:02:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:02:21,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-07-19 23:02:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:21,885 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:02:21,885 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 23:02:21,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:02:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 23:02:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-19 23:02:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-19 23:02:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-07-19 23:02:21,897 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-07-19 23:02:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:21,897 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-07-19 23:02:21,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:02:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-07-19 23:02:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-19 23:02:21,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:21,900 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:22,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:22,115 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash -111055954, now seen corresponding path program 2 times [2020-07-19 23:02:22,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:22,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288598001] [2020-07-19 23:02:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 23:02:22,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288598001] [2020-07-19 23:02:22,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280186509] [2020-07-19 23:02:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@27f24d9e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:22,374 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@27f24d9e issued 3 check-sat command(s) [2020-07-19 23:02:22,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:22,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-19 23:02:22,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-19 23:02:22,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:22,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-19 23:02:22,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446506206] [2020-07-19 23:02:22,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 23:02:22,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:22,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 23:02:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:02:22,441 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 12 states. [2020-07-19 23:02:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:22,682 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2020-07-19 23:02:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 23:02:22,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-07-19 23:02:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:22,685 INFO L225 Difference]: With dead ends: 72 [2020-07-19 23:02:22,685 INFO L226 Difference]: Without dead ends: 41 [2020-07-19 23:02:22,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:02:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-19 23:02:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-19 23:02:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-19 23:02:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-19 23:02:22,697 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2020-07-19 23:02:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:22,697 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-19 23:02:22,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 23:02:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-19 23:02:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-19 23:02:22,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:22,701 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:22,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:22,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:22,916 INFO L82 PathProgramCache]: Analyzing trace with hash -987229488, now seen corresponding path program 3 times [2020-07-19 23:02:22,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:22,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257244972] [2020-07-19 23:02:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 106 proven. 151 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-07-19 23:02:23,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257244972] [2020-07-19 23:02:23,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455498812] [2020-07-19 23:02:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@51e3bb7e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:23,413 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@51e3bb7e issued 3 check-sat command(s) [2020-07-19 23:02:23,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:23,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-19 23:02:23,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 166 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-07-19 23:02:23,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:23,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 13 [2020-07-19 23:02:23,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841101292] [2020-07-19 23:02:23,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 23:02:23,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:23,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 23:02:23,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:02:23,476 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 13 states. [2020-07-19 23:02:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:23,794 INFO L93 Difference]: Finished difference Result 89 states and 132 transitions. [2020-07-19 23:02:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-19 23:02:23,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-07-19 23:02:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:23,801 INFO L225 Difference]: With dead ends: 89 [2020-07-19 23:02:23,801 INFO L226 Difference]: Without dead ends: 57 [2020-07-19 23:02:23,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-07-19 23:02:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-19 23:02:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-07-19 23:02:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-19 23:02:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-07-19 23:02:23,821 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 96 [2020-07-19 23:02:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:23,821 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-07-19 23:02:23,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 23:02:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-07-19 23:02:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-19 23:02:23,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:23,827 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:24,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:24,028 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:24,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1110256604, now seen corresponding path program 4 times [2020-07-19 23:02:24,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:24,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308465627] [2020-07-19 23:02:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-19 23:02:24,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308465627] [2020-07-19 23:02:24,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521476846] [2020-07-19 23:02:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@612d0ec7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:24,493 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@612d0ec7 issued 3 check-sat command(s) [2020-07-19 23:02:24,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:24,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-19 23:02:24,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-19 23:02:24,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:24,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-07-19 23:02:24,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986496625] [2020-07-19 23:02:24,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-19 23:02:24,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:24,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-19 23:02:24,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-19 23:02:24,547 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 10 states. [2020-07-19 23:02:24,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:24,734 INFO L93 Difference]: Finished difference Result 124 states and 179 transitions. [2020-07-19 23:02:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 23:02:24,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-07-19 23:02:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:24,742 INFO L225 Difference]: With dead ends: 124 [2020-07-19 23:02:24,742 INFO L226 Difference]: Without dead ends: 120 [2020-07-19 23:02:24,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-19 23:02:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-19 23:02:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-07-19 23:02:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-19 23:02:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2020-07-19 23:02:24,773 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 150 [2020-07-19 23:02:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:24,773 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2020-07-19 23:02:24,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-19 23:02:24,774 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2020-07-19 23:02:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-19 23:02:24,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:24,784 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:24,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-19 23:02:24,985 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:24,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:24,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1442326180, now seen corresponding path program 5 times [2020-07-19 23:02:24,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:24,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393716359] [2020-07-19 23:02:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2020-07-19 23:02:25,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393716359] [2020-07-19 23:02:25,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868614462] [2020-07-19 23:02:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f02cc4b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:25,436 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f02cc4b issued 3 check-sat command(s) [2020-07-19 23:02:25,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:25,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-19 23:02:25,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2020-07-19 23:02:25,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:25,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-07-19 23:02:25,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840334773] [2020-07-19 23:02:25,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 23:02:25,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 23:02:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:02:25,515 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand 11 states. [2020-07-19 23:02:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:25,772 INFO L93 Difference]: Finished difference Result 248 states and 401 transitions. [2020-07-19 23:02:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 23:02:25,774 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-07-19 23:02:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:25,784 INFO L225 Difference]: With dead ends: 248 [2020-07-19 23:02:25,784 INFO L226 Difference]: Without dead ends: 244 [2020-07-19 23:02:25,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-07-19 23:02:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-19 23:02:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 232. [2020-07-19 23:02:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-19 23:02:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 379 transitions. [2020-07-19 23:02:25,859 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 379 transitions. Word has length 177 [2020-07-19 23:02:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:25,860 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 379 transitions. [2020-07-19 23:02:25,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 23:02:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 379 transitions. [2020-07-19 23:02:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-19 23:02:25,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:25,871 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:26,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:26,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -902141708, now seen corresponding path program 6 times [2020-07-19 23:02:26,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:26,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490302715] [2020-07-19 23:02:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2020-07-19 23:02:26,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490302715] [2020-07-19 23:02:26,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317574281] [2020-07-19 23:02:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4346b3dc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:26,938 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4346b3dc issued 3 check-sat command(s) [2020-07-19 23:02:26,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:26,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-19 23:02:26,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2020-07-19 23:02:27,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:27,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-07-19 23:02:27,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005607260] [2020-07-19 23:02:27,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 23:02:27,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:27,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 23:02:27,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:02:27,062 INFO L87 Difference]: Start difference. First operand 232 states and 379 transitions. Second operand 12 states. [2020-07-19 23:02:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:27,354 INFO L93 Difference]: Finished difference Result 500 states and 890 transitions. [2020-07-19 23:02:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 23:02:27,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-07-19 23:02:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:27,366 INFO L225 Difference]: With dead ends: 500 [2020-07-19 23:02:27,366 INFO L226 Difference]: Without dead ends: 496 [2020-07-19 23:02:27,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:02:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-07-19 23:02:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 481. [2020-07-19 23:02:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-07-19 23:02:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 864 transitions. [2020-07-19 23:02:27,448 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 864 transitions. Word has length 286 [2020-07-19 23:02:27,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:27,450 INFO L479 AbstractCegarLoop]: Abstraction has 481 states and 864 transitions. [2020-07-19 23:02:27,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 23:02:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 864 transitions. [2020-07-19 23:02:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-07-19 23:02:27,465 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:27,466 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:27,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:27,679 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1052494023, now seen corresponding path program 7 times [2020-07-19 23:02:27,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:27,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918450196] [2020-07-19 23:02:27,682 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1851 proven. 3572 refuted. 0 times theorem prover too weak. 13680 trivial. 0 not checked. [2020-07-19 23:02:29,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918450196] [2020-07-19 23:02:29,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655049619] [2020-07-19 23:02:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d2ee6be No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:29,761 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d2ee6be issued 3 check-sat command(s) [2020-07-19 23:02:29,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:29,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-19 23:02:29,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 401 proven. 2942 refuted. 0 times theorem prover too weak. 15760 trivial. 0 not checked. [2020-07-19 23:02:29,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:29,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 21 [2020-07-19 23:02:29,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737571257] [2020-07-19 23:02:30,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-19 23:02:30,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:30,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-19 23:02:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-07-19 23:02:30,002 INFO L87 Difference]: Start difference. First operand 481 states and 864 transitions. Second operand 21 states. [2020-07-19 23:02:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:31,018 INFO L93 Difference]: Finished difference Result 626 states and 1240 transitions. [2020-07-19 23:02:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-19 23:02:31,019 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 572 [2020-07-19 23:02:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:31,024 INFO L225 Difference]: With dead ends: 626 [2020-07-19 23:02:31,024 INFO L226 Difference]: Without dead ends: 158 [2020-07-19 23:02:31,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=1946, Unknown=0, NotChecked=0, Total=2450 [2020-07-19 23:02:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-19 23:02:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 121. [2020-07-19 23:02:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-19 23:02:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 173 transitions. [2020-07-19 23:02:31,053 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 173 transitions. Word has length 572 [2020-07-19 23:02:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:31,054 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 173 transitions. [2020-07-19 23:02:31,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-19 23:02:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 173 transitions. [2020-07-19 23:02:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2020-07-19 23:02:31,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:31,105 INFO L422 BasicCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:31,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-19 23:02:31,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1213678472, now seen corresponding path program 8 times [2020-07-19 23:02:31,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:31,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019367756] [2020-07-19 23:02:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 6004 proven. 6094 refuted. 0 times theorem prover too weak. 31516 trivial. 0 not checked. [2020-07-19 23:02:34,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019367756] [2020-07-19 23:02:34,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593212678] [2020-07-19 23:02:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@53d468d1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:34,994 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@53d468d1 issued 4 check-sat command(s) [2020-07-19 23:02:34,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:34,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-19 23:02:35,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3794 proven. 2050 refuted. 0 times theorem prover too weak. 37770 trivial. 0 not checked. [2020-07-19 23:02:35,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:35,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 25 [2020-07-19 23:02:35,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082251579] [2020-07-19 23:02:35,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-19 23:02:35,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:35,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-19 23:02:35,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2020-07-19 23:02:35,387 INFO L87 Difference]: Start difference. First operand 121 states and 173 transitions. Second operand 25 states. [2020-07-19 23:02:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:36,695 INFO L93 Difference]: Finished difference Result 304 states and 603 transitions. [2020-07-19 23:02:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-19 23:02:36,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 858 [2020-07-19 23:02:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:36,701 INFO L225 Difference]: With dead ends: 304 [2020-07-19 23:02:36,701 INFO L226 Difference]: Without dead ends: 169 [2020-07-19 23:02:36,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1113 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=687, Invalid=2973, Unknown=0, NotChecked=0, Total=3660 [2020-07-19 23:02:36,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-19 23:02:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2020-07-19 23:02:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-19 23:02:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 202 transitions. [2020-07-19 23:02:36,716 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 202 transitions. Word has length 858 [2020-07-19 23:02:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:36,717 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 202 transitions. [2020-07-19 23:02:36,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-19 23:02:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 202 transitions. [2020-07-19 23:02:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-07-19 23:02:36,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:36,723 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:36,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:36,938 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1616877860, now seen corresponding path program 9 times [2020-07-19 23:02:36,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:36,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519016170] [2020-07-19 23:02:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-19 23:02:41,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519016170] [2020-07-19 23:02:41,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919876207] [2020-07-19 23:02:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3ad9c5ab No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:41,939 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3ad9c5ab issued 4 check-sat command(s) [2020-07-19 23:02:41,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:41,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 439 conjunts are in the unsatisfiable core [2020-07-19 23:02:41,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-19 23:02:44,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:44,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-07-19 23:02:44,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214060866] [2020-07-19 23:02:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-19 23:02:44,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-19 23:02:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-07-19 23:02:44,567 INFO L87 Difference]: Start difference. First operand 147 states and 202 transitions. Second operand 36 states. [2020-07-19 23:02:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:45,093 INFO L93 Difference]: Finished difference Result 160 states and 227 transitions. [2020-07-19 23:02:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-19 23:02:45,094 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 749 [2020-07-19 23:02:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:45,098 INFO L225 Difference]: With dead ends: 160 [2020-07-19 23:02:45,098 INFO L226 Difference]: Without dead ends: 156 [2020-07-19 23:02:45,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1099 SyntacticMatches, 56 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-07-19 23:02:45,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-19 23:02:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2020-07-19 23:02:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-19 23:02:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 217 transitions. [2020-07-19 23:02:45,109 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 217 transitions. Word has length 749 [2020-07-19 23:02:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:45,110 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 217 transitions. [2020-07-19 23:02:45,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-19 23:02:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 217 transitions. [2020-07-19 23:02:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2020-07-19 23:02:45,119 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:45,119 INFO L422 BasicCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:45,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:45,333 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:45,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1106954389, now seen corresponding path program 10 times [2020-07-19 23:02:45,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:45,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559979994] [2020-07-19 23:02:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6563798b [2020-07-19 23:02:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3241 proven. 6582 refuted. 0 times theorem prover too weak. 41087 trivial. 0 not checked. [2020-07-19 23:02:48,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559979994] [2020-07-19 23:02:48,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356441134] [2020-07-19 23:02:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bc6f171 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:49,029 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bc6f171 issued 3 check-sat command(s) [2020-07-19 23:02:49,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-19 23:02:49,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1201 proven. 5825 refuted. 0 times theorem prover too weak. 43884 trivial. 0 not checked. [2020-07-19 23:02:49,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:49,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 23 [2020-07-19 23:02:49,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029683720] [2020-07-19 23:02:49,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-19 23:02:49,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:49,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-19 23:02:49,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-07-19 23:02:49,437 INFO L87 Difference]: Start difference. First operand 155 states and 217 transitions. Second operand 23 states. [2020-07-19 23:02:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:50,187 INFO L93 Difference]: Finished difference Result 298 states and 424 transitions. [2020-07-19 23:02:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-19 23:02:50,190 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 926 [2020-07-19 23:02:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:50,191 INFO L225 Difference]: With dead ends: 298 [2020-07-19 23:02:50,191 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:02:50,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1196 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2020-07-19 23:02:50,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:02:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:02:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:02:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:02:50,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 926 [2020-07-19 23:02:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:50,195 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:02:50,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-19 23:02:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:02:50,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:02:50,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-19 23:02:50,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:02:50,988 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 6 [2020-07-19 23:02:51,835 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 57 [2020-07-19 23:02:51,840 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-07-19 23:02:51,840 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-07-19 23:02:51,840 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= 2 |fibonacci_#in~n|) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-19 23:02:51,840 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-19 23:02:51,841 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (<= |fibonacci_#in~n| 8) (and (<= |fibonacci_#t~ret0| 21) (<= 21 |fibonacci_#t~ret0|)) (<= 10 |fibonacci_#in~n|)) (let ((.cse0 (<= |fibonacci_#t~ret0| 1)) (.cse1 (<= 1 |fibonacci_#t~ret0|))) (or (and .cse0 .cse1 (<= 2 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 2)) (and (<= |fibonacci_#t~ret0| 2) (<= 2 |fibonacci_#t~ret0|) (<= 4 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 4)) (and (<= |fibonacci_#t~ret0| 3) (<= |fibonacci_#in~n| 5) (<= 3 |fibonacci_#t~ret0|) (<= 5 |fibonacci_#in~n|)) (and .cse0 .cse1 (<= 3 fibonacci_~n) (<= |fibonacci_#in~n| 3)) (and (<= |fibonacci_#in~n| 7) (<= |fibonacci_#t~ret0| 8) (<= 8 |fibonacci_#t~ret0|) (<= 7 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret0| 13) (<= 8 fibonacci_~n) (<= 13 |fibonacci_#t~ret0|)) (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#t~ret0| 5) (<= |fibonacci_#in~n| 6) (<= 6 |fibonacci_#in~n|)) (<= 9 fibonacci_~n))) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-19 23:02:51,841 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-07-19 23:02:51,841 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-19 23:02:51,841 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-07-19 23:02:51,841 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-07-19 23:02:51,841 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:02:51,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:02:51,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:02:51,842 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:02:51,842 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:02:51,842 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:02:51,842 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2020-07-19 23:02:51,842 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-19 23:02:51,842 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 33) the Hoare annotation is: true [2020-07-19 23:02:51,842 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 33) no Hoare annotation was computed. [2020-07-19 23:02:51,843 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-07-19 23:02:51,843 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~x~0 9) (<= 9 main_~x~0)) [2020-07-19 23:02:51,843 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-07-19 23:02:51,843 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 33) no Hoare annotation was computed. [2020-07-19 23:02:51,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:02:51 BoogieIcfgContainer [2020-07-19 23:02:51,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:02:51,849 INFO L168 Benchmark]: Toolchain (without parser) took 32061.20 ms. Allocated memory was 139.5 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 104.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-07-19 23:02:51,850 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:02:51,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.88 ms. Allocated memory is still 139.5 MB. Free memory was 104.3 MB in the beginning and 94.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:02:51,851 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 139.5 MB. Free memory was 94.8 MB in the beginning and 93.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:02:51,852 INFO L168 Benchmark]: RCFGBuilder took 301.94 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 171.3 MB in the end (delta: -78.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:02:51,853 INFO L168 Benchmark]: TraceAbstraction took 31507.06 ms. Allocated memory was 203.4 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 170.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-07-19 23:02:51,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.88 ms. Allocated memory is still 139.5 MB. Free memory was 104.3 MB in the beginning and 94.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 139.5 MB. Free memory was 94.8 MB in the beginning and 93.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 301.94 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 171.3 MB in the end (delta: -78.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31507.06 ms. Allocated memory was 203.4 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 170.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.0s, OverallIterations: 13, TraceHistogramMax: 135, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 359 SDtfs, 881 SDslu, 2143 SDs, 0 SdLazy, 3506 SolverSat, 840 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5541 GetRequests, 5193 SyntacticMatches, 56 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=481occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 101 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 632 PreInvPairs, 852 NumberOfFragments, 129 HoareAnnotationTreeSize, 632 FomulaSimplifications, 1633 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4544 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 7841 NumberOfCodeBlocks, 7275 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 7817 ConstructedInterpolants, 0 QuantifiedInterpolants, 10114109 SizeOfPredicates, 67 NumberOfNonLiveVariables, 7759 ConjunctsInSsa, 571 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 255891/309200 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...