/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_VARIABLES --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/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:11:07,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:11:07,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:11:07,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:11:07,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:11:07,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:11:07,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:11:07,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:11:07,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:11:07,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:11:07,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:11:07,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:11:07,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:11:07,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:11:07,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:11:07,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:11:07,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:11:07,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:11:07,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:11:07,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:11:07,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:11:07,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:11:07,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:11:07,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:11:07,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:11:07,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:11:07,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:11:07,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:11:07,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:11:07,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:11:07,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:11:07,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:11:07,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:11:07,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:11:07,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:11:07,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:11:07,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:11:07,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:11:07,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:11:07,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:11:07,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:11:07,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 01:11:07,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:11:07,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:11:07,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:11:07,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:11:07,496 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:11:07,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:11:07,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:11:07,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:11:07,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:11:07,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:11:07,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:11:07,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:11:07,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:11:07,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:11:07,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:11:07,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:11:07,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:11:07,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:11:07,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:11:07,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:11:07,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:11:07,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:11:07,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:11:07,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:11:07,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:11:07,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:11:07,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:11:07,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:11:07,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:11:07,503 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_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:11:07,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:11:07,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:11:07,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:11:07,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:11:07,800 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:11:07,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-20 01:11:07,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d19309848/82548e9b934047d4a420c2b8bce6c449/FLAG44cb9d55e [2020-07-20 01:11:08,355 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:11:08,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-20 01:11:08,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d19309848/82548e9b934047d4a420c2b8bce6c449/FLAG44cb9d55e [2020-07-20 01:11:08,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d19309848/82548e9b934047d4a420c2b8bce6c449 [2020-07-20 01:11:08,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:11:08,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:11:08,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:11:08,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:11:08,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:11:08,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:11:08" (1/1) ... [2020-07-20 01:11:08,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78186581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:08, skipping insertion in model container [2020-07-20 01:11:08,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:11:08" (1/1) ... [2020-07-20 01:11:08,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:11:08,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:11:08,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:11:08,995 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:11:09,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:11:09,026 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:11:09,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09 WrapperNode [2020-07-20 01:11:09,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:11:09,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:11:09,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:11:09,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:11:09,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... [2020-07-20 01:11:09,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:11:09,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:11:09,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:11:09,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:11:09,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:11:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:11:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:11:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-20 01:11:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:11:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:11:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:11:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-20 01:11:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:11:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:11:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:11:09,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:11:09,401 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 01:11:09,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:11:09 BoogieIcfgContainer [2020-07-20 01:11:09,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:11:09,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:11:09,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:11:09,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:11:09,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:11:08" (1/3) ... [2020-07-20 01:11:09,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a252ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:11:09, skipping insertion in model container [2020-07-20 01:11:09,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:09" (2/3) ... [2020-07-20 01:11:09,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a252ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:11:09, skipping insertion in model container [2020-07-20 01:11:09,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:11:09" (3/3) ... [2020-07-20 01:11:09,413 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-07-20 01:11:09,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:11:09,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:11:09,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:11:09,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:11:09,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:11:09,522 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:11:09,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:11:09,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:11:09,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:11:09,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:11:09,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:11:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 01:11:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 01:11:09,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:09,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:09,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-07-20 01:11:09,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:09,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829571504] [2020-07-20 01:11:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:11:09,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829571504] [2020-07-20 01:11:09,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:11:09,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:11:09,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032934685] [2020-07-20 01:11:09,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:11:09,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:11:09,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:11:09,827 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 01:11:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:09,967 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-20 01:11:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:11:09,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 01:11:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:09,989 INFO L225 Difference]: With dead ends: 36 [2020-07-20 01:11:09,989 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 01:11:09,993 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 [2020-07-20 01:11:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 01:11:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 01:11:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 01:11:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-07-20 01:11:10,036 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-07-20 01:11:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:10,037 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-07-20 01:11:10,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:11:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-20 01:11:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 01:11:10,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:10,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:10,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:11:10,041 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:10,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:10,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-07-20 01:11:10,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:10,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665343369] [2020-07-20 01:11:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:11:10,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665343369] [2020-07-20 01:11:10,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:11:10,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:11:10,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523611088] [2020-07-20 01:11:10,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:11:10,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:10,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:11:10,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:11:10,131 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-07-20 01:11:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:10,168 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-07-20 01:11:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:11:10,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-20 01:11:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:10,171 INFO L225 Difference]: With dead ends: 32 [2020-07-20 01:11:10,171 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 01:11:10,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:11:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 01:11:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 01:11:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 01:11:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 01:11:10,181 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-20 01:11:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:10,182 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 01:11:10,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:11:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 01:11:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 01:11:10,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:10,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:10,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:11:10,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:10,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:10,185 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-07-20 01:11:10,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:10,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799779709] [2020-07-20 01:11:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:11:10,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799779709] [2020-07-20 01:11:10,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170189552] [2020-07-20 01:11:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75e05594 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 [2020-07-20 01:11:10,360 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75e05594 issued 2 check-sat command(s) [2020-07-20 01:11:10,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:10,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:11:10,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:11:10,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:10,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 01:11:10,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180654358] [2020-07-20 01:11:10,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:11:10,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:10,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:11:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:11:10,479 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-07-20 01:11:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:10,637 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2020-07-20 01:11:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:11:10,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-07-20 01:11:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:10,640 INFO L225 Difference]: With dead ends: 52 [2020-07-20 01:11:10,640 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 01:11:10,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:11:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 01:11:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-20 01:11:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 01:11:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-07-20 01:11:10,652 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 20 [2020-07-20 01:11:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:10,653 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-20 01:11:10,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:11:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-07-20 01:11:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 01:11:10,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:10,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:10,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:11:10,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:10,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-07-20 01:11:10,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:10,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520813415] [2020-07-20 01:11:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 01:11:11,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520813415] [2020-07-20 01:11:11,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867483753] [2020-07-20 01:11:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74ac53d0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:11,082 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74ac53d0 issued 2 check-sat command(s) [2020-07-20 01:11:11,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:11,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 01:11:11,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 01:11:11,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:11,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-20 01:11:11,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582535395] [2020-07-20 01:11:11,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:11:11,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:11,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:11:11,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:11:11,148 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 9 states. [2020-07-20 01:11:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:11,314 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-07-20 01:11:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:11:11,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-20 01:11:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:11,317 INFO L225 Difference]: With dead ends: 41 [2020-07-20 01:11:11,317 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 01:11:11,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:11:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 01:11:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-20 01:11:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 01:11:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-07-20 01:11:11,326 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 27 [2020-07-20 01:11:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:11,327 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-07-20 01:11:11,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:11:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-07-20 01:11:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 01:11:11,328 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:11,328 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:11,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:11,543 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:11,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-07-20 01:11:11,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:11,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139269887] [2020-07-20 01:11:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-20 01:11:11,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139269887] [2020-07-20 01:11:11,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595000323] [2020-07-20 01:11:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60ce9758 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 [2020-07-20 01:11:11,755 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60ce9758 issued 2 check-sat command(s) [2020-07-20 01:11:11,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:11,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 01:11:11,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-20 01:11:11,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:11,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 01:11:11,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049668372] [2020-07-20 01:11:11,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:11:11,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:11,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:11:11,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:11:11,802 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 10 states. [2020-07-20 01:11:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:11,962 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-07-20 01:11:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:11:11,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-20 01:11:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:11,965 INFO L225 Difference]: With dead ends: 44 [2020-07-20 01:11:11,965 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 01:11:11,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:11:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 01:11:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-07-20 01:11:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 01:11:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-20 01:11:11,975 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 34 [2020-07-20 01:11:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:11,976 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-20 01:11:11,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:11:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-20 01:11:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 01:11:11,978 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:11,978 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:12,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:12,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:12,194 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-07-20 01:11:12,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:12,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920094217] [2020-07-20 01:11:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-20 01:11:12,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920094217] [2020-07-20 01:11:12,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932663462] [2020-07-20 01:11:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@45ccff7b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:12,417 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@45ccff7b issued 2 check-sat command(s) [2020-07-20 01:11:12,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:12,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 01:11:12,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-20 01:11:12,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:12,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-20 01:11:12,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662796023] [2020-07-20 01:11:12,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 01:11:12,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:12,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 01:11:12,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:11:12,479 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 11 states. [2020-07-20 01:11:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:12,639 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-07-20 01:11:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 01:11:12,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-07-20 01:11:12,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:12,642 INFO L225 Difference]: With dead ends: 47 [2020-07-20 01:11:12,642 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 01:11:12,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-07-20 01:11:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 01:11:12,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-20 01:11:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 01:11:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 01:11:12,662 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 41 [2020-07-20 01:11:12,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:12,663 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 01:11:12,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 01:11:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 01:11:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 01:11:12,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:12,667 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:12,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:12,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-07-20 01:11:12,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:12,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771535119] [2020-07-20 01:11:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-20 01:11:13,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771535119] [2020-07-20 01:11:13,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953948196] [2020-07-20 01:11:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38a00e1 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 [2020-07-20 01:11:13,087 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38a00e1 issued 2 check-sat command(s) [2020-07-20 01:11:13,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:13,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 01:11:13,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-20 01:11:13,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:13,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-07-20 01:11:13,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287810229] [2020-07-20 01:11:13,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 01:11:13,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:13,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 01:11:13,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:11:13,153 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 12 states. [2020-07-20 01:11:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:13,337 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-07-20 01:11:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 01:11:13,338 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-07-20 01:11:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:13,340 INFO L225 Difference]: With dead ends: 50 [2020-07-20 01:11:13,340 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 01:11:13,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:11:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 01:11:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-20 01:11:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 01:11:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-07-20 01:11:13,349 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 48 [2020-07-20 01:11:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:13,349 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-07-20 01:11:13,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 01:11:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-20 01:11:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 01:11:13,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:13,352 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:13,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-20 01:11:13,565 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:13,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-07-20 01:11:13,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:13,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745082404] [2020-07-20 01:11:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-20 01:11:13,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745082404] [2020-07-20 01:11:13,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342166850] [2020-07-20 01:11:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@de54e4b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:13,839 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@de54e4b issued 2 check-sat command(s) [2020-07-20 01:11:13,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:13,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 01:11:13,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-20 01:11:13,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:13,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-20 01:11:13,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910051376] [2020-07-20 01:11:13,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 01:11:13,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:13,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 01:11:13,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:11:13,893 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2020-07-20 01:11:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:14,068 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-07-20 01:11:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 01:11:14,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-07-20 01:11:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:14,070 INFO L225 Difference]: With dead ends: 53 [2020-07-20 01:11:14,070 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 01:11:14,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-07-20 01:11:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 01:11:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-20 01:11:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 01:11:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-07-20 01:11:14,079 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 55 [2020-07-20 01:11:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:14,080 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-07-20 01:11:14,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 01:11:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-07-20 01:11:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 01:11:14,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:14,082 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:14,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:14,295 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:14,296 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-07-20 01:11:14,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:14,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224772990] [2020-07-20 01:11:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-20 01:11:14,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224772990] [2020-07-20 01:11:14,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087301085] [2020-07-20 01:11:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20263f58 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 [2020-07-20 01:11:14,578 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20263f58 issued 2 check-sat command(s) [2020-07-20 01:11:14,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:14,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 01:11:14,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-20 01:11:14,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:14,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-07-20 01:11:14,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502940978] [2020-07-20 01:11:14,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 01:11:14,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:14,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 01:11:14,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:11:14,645 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 14 states. [2020-07-20 01:11:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:14,846 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-07-20 01:11:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 01:11:14,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-07-20 01:11:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:14,848 INFO L225 Difference]: With dead ends: 56 [2020-07-20 01:11:14,848 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 01:11:14,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-07-20 01:11:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 01:11:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-20 01:11:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 01:11:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-07-20 01:11:14,856 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 62 [2020-07-20 01:11:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:14,857 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-07-20 01:11:14,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 01:11:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-07-20 01:11:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 01:11:14,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:14,858 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:15,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:15,073 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:15,074 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-07-20 01:11:15,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:15,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327350664] [2020-07-20 01:11:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-20 01:11:15,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327350664] [2020-07-20 01:11:15,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257261728] [2020-07-20 01:11:15,311 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b56975f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:15,350 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b56975f issued 2 check-sat command(s) [2020-07-20 01:11:15,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:15,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 01:11:15,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-20 01:11:15,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:15,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-20 01:11:15,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211847650] [2020-07-20 01:11:15,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 01:11:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 01:11:15,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:11:15,410 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 15 states. [2020-07-20 01:11:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:15,626 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 01:11:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 01:11:15,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-07-20 01:11:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:15,628 INFO L225 Difference]: With dead ends: 59 [2020-07-20 01:11:15,628 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 01:11:15,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-07-20 01:11:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 01:11:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-07-20 01:11:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 01:11:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-07-20 01:11:15,636 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 69 [2020-07-20 01:11:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:15,636 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-07-20 01:11:15,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 01:11:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-07-20 01:11:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-20 01:11:15,637 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:15,637 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:15,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 01:11:15,851 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:15,852 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-07-20 01:11:15,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:15,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490960082] [2020-07-20 01:11:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-20 01:11:16,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490960082] [2020-07-20 01:11:16,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392124413] [2020-07-20 01:11:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76b7721d 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 [2020-07-20 01:11:16,182 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76b7721d issued 2 check-sat command(s) [2020-07-20 01:11:16,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:16,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 01:11:16,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-20 01:11:16,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:16,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-07-20 01:11:16,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809236431] [2020-07-20 01:11:16,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 01:11:16,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:16,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 01:11:16,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-07-20 01:11:16,271 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 16 states. [2020-07-20 01:11:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:16,496 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-07-20 01:11:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 01:11:16,497 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-07-20 01:11:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:16,498 INFO L225 Difference]: With dead ends: 62 [2020-07-20 01:11:16,499 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 01:11:16,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-07-20 01:11:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 01:11:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-07-20 01:11:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 01:11:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-07-20 01:11:16,516 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 76 [2020-07-20 01:11:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:16,517 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-07-20 01:11:16,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 01:11:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-07-20 01:11:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 01:11:16,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:16,520 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:16,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:16,722 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-07-20 01:11:16,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:16,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973137319] [2020-07-20 01:11:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-20 01:11:17,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973137319] [2020-07-20 01:11:17,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782525748] [2020-07-20 01:11:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55f3ac12 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:17,091 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55f3ac12 issued 2 check-sat command(s) [2020-07-20 01:11:17,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:17,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 01:11:17,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-20 01:11:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:17,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-20 01:11:17,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714574151] [2020-07-20 01:11:17,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 01:11:17,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 01:11:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-07-20 01:11:17,153 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 17 states. [2020-07-20 01:11:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:17,373 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-20 01:11:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 01:11:17,374 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-07-20 01:11:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:17,375 INFO L225 Difference]: With dead ends: 65 [2020-07-20 01:11:17,375 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 01:11:17,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:11:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 01:11:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-20 01:11:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 01:11:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-07-20 01:11:17,405 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 83 [2020-07-20 01:11:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:17,405 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-07-20 01:11:17,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 01:11:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-07-20 01:11:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-20 01:11:17,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:17,410 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:17,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:17,624 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-07-20 01:11:17,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:17,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477736350] [2020-07-20 01:11:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-20 01:11:18,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477736350] [2020-07-20 01:11:18,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11262197] [2020-07-20 01:11:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@264e35a6 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 [2020-07-20 01:11:18,062 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@264e35a6 issued 2 check-sat command(s) [2020-07-20 01:11:18,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:18,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 01:11:18,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-20 01:11:18,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:18,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-07-20 01:11:18,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548645582] [2020-07-20 01:11:18,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 01:11:18,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:18,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 01:11:18,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-07-20 01:11:18,120 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 18 states. [2020-07-20 01:11:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:18,410 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-07-20 01:11:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 01:11:18,411 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-07-20 01:11:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:18,412 INFO L225 Difference]: With dead ends: 68 [2020-07-20 01:11:18,412 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 01:11:18,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-07-20 01:11:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 01:11:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-07-20 01:11:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 01:11:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-07-20 01:11:18,426 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 90 [2020-07-20 01:11:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:18,427 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-07-20 01:11:18,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 01:11:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-07-20 01:11:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-07-20 01:11:18,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:18,428 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:18,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-20 01:11:18,629 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:18,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:18,629 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-07-20 01:11:18,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:18,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312466397] [2020-07-20 01:11:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-20 01:11:19,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312466397] [2020-07-20 01:11:19,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936417800] [2020-07-20 01:11:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4efe035e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:19,129 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4efe035e issued 2 check-sat command(s) [2020-07-20 01:11:19,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:19,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 01:11:19,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-20 01:11:19,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:19,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-20 01:11:19,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785762359] [2020-07-20 01:11:19,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 01:11:19,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 01:11:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:11:19,226 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 19 states. [2020-07-20 01:11:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:19,521 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-07-20 01:11:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 01:11:19,521 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-07-20 01:11:19,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:19,522 INFO L225 Difference]: With dead ends: 71 [2020-07-20 01:11:19,522 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 01:11:19,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 01:11:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 01:11:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-07-20 01:11:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 01:11:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-07-20 01:11:19,529 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 97 [2020-07-20 01:11:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:19,530 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-07-20 01:11:19,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 01:11:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-07-20 01:11:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-20 01:11:19,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:19,532 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:19,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-20 01:11:19,745 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:19,745 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-07-20 01:11:19,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:19,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683847698] [2020-07-20 01:11:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-20 01:11:20,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683847698] [2020-07-20 01:11:20,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275594287] [2020-07-20 01:11:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56d15b24 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:20,459 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56d15b24 issued 2 check-sat command(s) [2020-07-20 01:11:20,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:20,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 01:11:20,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-20 01:11:20,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:20,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-07-20 01:11:20,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422074983] [2020-07-20 01:11:20,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 01:11:20,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:20,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 01:11:20,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-07-20 01:11:20,534 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 20 states. [2020-07-20 01:11:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:20,784 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-07-20 01:11:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 01:11:20,784 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-07-20 01:11:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:20,786 INFO L225 Difference]: With dead ends: 74 [2020-07-20 01:11:20,786 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 01:11:20,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 01:11:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 01:11:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-20 01:11:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 01:11:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-07-20 01:11:20,794 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 104 [2020-07-20 01:11:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:20,794 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-07-20 01:11:20,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 01:11:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-07-20 01:11:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 01:11:20,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:20,796 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:21,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-20 01:11:21,010 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-07-20 01:11:21,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:21,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056807488] [2020-07-20 01:11:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-20 01:11:21,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056807488] [2020-07-20 01:11:21,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640089353] [2020-07-20 01:11:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d13d63d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:21,698 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d13d63d issued 2 check-sat command(s) [2020-07-20 01:11:21,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:21,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 01:11:21,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-20 01:11:21,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:21,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-20 01:11:21,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618390894] [2020-07-20 01:11:21,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 01:11:21,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:21,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 01:11:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-07-20 01:11:21,763 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 21 states. [2020-07-20 01:11:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:22,062 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-07-20 01:11:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 01:11:22,062 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-07-20 01:11:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:22,063 INFO L225 Difference]: With dead ends: 77 [2020-07-20 01:11:22,063 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 01:11:22,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 01:11:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 01:11:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-07-20 01:11:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 01:11:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-07-20 01:11:22,075 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 111 [2020-07-20 01:11:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:22,075 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-07-20 01:11:22,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 01:11:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-07-20 01:11:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-20 01:11:22,078 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:22,078 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:22,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:22,292 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-07-20 01:11:22,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:22,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4646240] [2020-07-20 01:11:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-20 01:11:23,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4646240] [2020-07-20 01:11:23,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511545410] [2020-07-20 01:11:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16c1e916 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:23,068 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16c1e916 issued 2 check-sat command(s) [2020-07-20 01:11:23,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:23,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 01:11:23,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-20 01:11:23,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:23,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-07-20 01:11:23,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542211046] [2020-07-20 01:11:23,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 01:11:23,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:23,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 01:11:23,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-07-20 01:11:23,136 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 22 states. [2020-07-20 01:11:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:23,465 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-20 01:11:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 01:11:23,466 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-07-20 01:11:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:23,467 INFO L225 Difference]: With dead ends: 80 [2020-07-20 01:11:23,467 INFO L226 Difference]: Without dead ends: 76 [2020-07-20 01:11:23,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 01:11:23,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-20 01:11:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-20 01:11:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 01:11:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-07-20 01:11:23,473 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 118 [2020-07-20 01:11:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:23,474 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-07-20 01:11:23,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 01:11:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-07-20 01:11:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 01:11:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:23,476 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:23,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-07-20 01:11:23,682 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:23,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-07-20 01:11:23,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:23,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243903248] [2020-07-20 01:11:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-20 01:11:24,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243903248] [2020-07-20 01:11:24,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436698410] [2020-07-20 01:11:24,279 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@141e1e5f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:24,335 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@141e1e5f issued 2 check-sat command(s) [2020-07-20 01:11:24,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:24,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-20 01:11:24,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-20 01:11:24,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:24,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-20 01:11:24,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652365269] [2020-07-20 01:11:24,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 01:11:24,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 01:11:24,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-07-20 01:11:24,431 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 23 states. [2020-07-20 01:11:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:24,801 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-07-20 01:11:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 01:11:24,801 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 125 [2020-07-20 01:11:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:24,803 INFO L225 Difference]: With dead ends: 83 [2020-07-20 01:11:24,803 INFO L226 Difference]: Without dead ends: 79 [2020-07-20 01:11:24,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2020-07-20 01:11:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-20 01:11:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-20 01:11:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 01:11:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-07-20 01:11:24,813 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 125 [2020-07-20 01:11:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:24,813 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-07-20 01:11:24,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 01:11:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-07-20 01:11:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-20 01:11:24,815 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:24,815 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:25,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-20 01:11:25,030 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:25,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:25,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-07-20 01:11:25,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:25,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961277059] [2020-07-20 01:11:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-20 01:11:25,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961277059] [2020-07-20 01:11:25,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290325879] [2020-07-20 01:11:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@120afde3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:26,087 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@120afde3 issued 2 check-sat command(s) [2020-07-20 01:11:26,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:26,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-20 01:11:26,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-20 01:11:26,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:26,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-07-20 01:11:26,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741197137] [2020-07-20 01:11:26,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 01:11:26,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:26,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 01:11:26,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-07-20 01:11:26,206 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 24 states. [2020-07-20 01:11:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:26,609 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-07-20 01:11:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-20 01:11:26,609 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-07-20 01:11:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:26,610 INFO L225 Difference]: With dead ends: 86 [2020-07-20 01:11:26,611 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 01:11:26,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2020-07-20 01:11:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 01:11:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-07-20 01:11:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 01:11:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-07-20 01:11:26,617 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 132 [2020-07-20 01:11:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:26,618 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-07-20 01:11:26,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 01:11:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-07-20 01:11:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 01:11:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:26,620 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:26,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:26,833 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-07-20 01:11:26,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:26,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463676229] [2020-07-20 01:11:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-20 01:11:27,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463676229] [2020-07-20 01:11:27,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064787361] [2020-07-20 01:11:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3035ffec No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:27,781 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3035ffec issued 2 check-sat command(s) [2020-07-20 01:11:27,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:27,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 01:11:27,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-20 01:11:27,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:27,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-20 01:11:27,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734350840] [2020-07-20 01:11:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-20 01:11:27,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-20 01:11:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-07-20 01:11:27,866 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 25 states. [2020-07-20 01:11:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:28,261 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-07-20 01:11:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 01:11:28,262 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 139 [2020-07-20 01:11:28,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:28,263 INFO L225 Difference]: With dead ends: 89 [2020-07-20 01:11:28,263 INFO L226 Difference]: Without dead ends: 85 [2020-07-20 01:11:28,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 01:11:28,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-20 01:11:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-07-20 01:11:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-20 01:11:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-07-20 01:11:28,270 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 139 [2020-07-20 01:11:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:28,271 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-07-20 01:11:28,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-20 01:11:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-07-20 01:11:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-20 01:11:28,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:28,273 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:28,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:28,487 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:28,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-07-20 01:11:28,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:28,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47413226] [2020-07-20 01:11:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-20 01:11:29,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47413226] [2020-07-20 01:11:29,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524664667] [2020-07-20 01:11:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@237db68d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:29,665 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@237db68d issued 2 check-sat command(s) [2020-07-20 01:11:29,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:29,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 01:11:29,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-20 01:11:29,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:29,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-07-20 01:11:29,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358461462] [2020-07-20 01:11:29,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 01:11:29,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:29,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 01:11:29,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-07-20 01:11:29,753 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 26 states. [2020-07-20 01:11:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:30,139 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-07-20 01:11:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-20 01:11:30,141 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2020-07-20 01:11:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:30,143 INFO L225 Difference]: With dead ends: 92 [2020-07-20 01:11:30,143 INFO L226 Difference]: Without dead ends: 88 [2020-07-20 01:11:30,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 01:11:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-20 01:11:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-20 01:11:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-20 01:11:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-07-20 01:11:30,154 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 146 [2020-07-20 01:11:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:30,155 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-07-20 01:11:30,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 01:11:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-07-20 01:11:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-20 01:11:30,157 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:30,157 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:30,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:30,371 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:30,372 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-07-20 01:11:30,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:30,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862669443] [2020-07-20 01:11:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-20 01:11:31,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862669443] [2020-07-20 01:11:31,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777090417] [2020-07-20 01:11:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4674b9a1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:31,473 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4674b9a1 issued 2 check-sat command(s) [2020-07-20 01:11:31,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:31,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-20 01:11:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-20 01:11:31,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:31,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-20 01:11:31,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410878323] [2020-07-20 01:11:31,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-20 01:11:31,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:31,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-20 01:11:31,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-07-20 01:11:31,559 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 27 states. [2020-07-20 01:11:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:32,005 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-07-20 01:11:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 01:11:32,005 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 153 [2020-07-20 01:11:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:32,007 INFO L225 Difference]: With dead ends: 95 [2020-07-20 01:11:32,007 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 01:11:32,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2020-07-20 01:11:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 01:11:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-07-20 01:11:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-20 01:11:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-07-20 01:11:32,014 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 153 [2020-07-20 01:11:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:32,014 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-07-20 01:11:32,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-20 01:11:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-07-20 01:11:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-20 01:11:32,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:32,017 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:32,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-07-20 01:11:32,231 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:32,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-07-20 01:11:32,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:32,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577397308] [2020-07-20 01:11:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-20 01:11:33,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577397308] [2020-07-20 01:11:33,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904934564] [2020-07-20 01:11:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@18de224e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:33,278 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@18de224e issued 2 check-sat command(s) [2020-07-20 01:11:33,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:33,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-20 01:11:33,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-20 01:11:33,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:33,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-07-20 01:11:33,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750306408] [2020-07-20 01:11:33,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-20 01:11:33,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:33,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-20 01:11:33,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-07-20 01:11:33,366 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 28 states. [2020-07-20 01:11:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:33,802 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-07-20 01:11:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 01:11:33,802 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 160 [2020-07-20 01:11:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:33,804 INFO L225 Difference]: With dead ends: 98 [2020-07-20 01:11:33,804 INFO L226 Difference]: Without dead ends: 94 [2020-07-20 01:11:33,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 01:11:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-20 01:11:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-07-20 01:11:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 01:11:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-07-20 01:11:33,810 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 160 [2020-07-20 01:11:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:33,811 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-07-20 01:11:33,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-20 01:11:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-07-20 01:11:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-20 01:11:33,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:33,813 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:34,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-07-20 01:11:34,028 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-07-20 01:11:34,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:34,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490521389] [2020-07-20 01:11:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-20 01:11:35,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490521389] [2020-07-20 01:11:35,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016875928] [2020-07-20 01:11:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@163fab67 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:35,182 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@163fab67 issued 2 check-sat command(s) [2020-07-20 01:11:35,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:35,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-20 01:11:35,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-20 01:11:35,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:35,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-20 01:11:35,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056023671] [2020-07-20 01:11:35,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 01:11:35,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:35,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 01:11:35,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:11:35,286 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 29 states. [2020-07-20 01:11:35,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:35,739 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-07-20 01:11:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 01:11:35,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 167 [2020-07-20 01:11:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:35,740 INFO L225 Difference]: With dead ends: 101 [2020-07-20 01:11:35,740 INFO L226 Difference]: Without dead ends: 97 [2020-07-20 01:11:35,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 01:11:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-20 01:11:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-20 01:11:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-20 01:11:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-07-20 01:11:35,746 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 167 [2020-07-20 01:11:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:35,746 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-07-20 01:11:35,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 01:11:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-07-20 01:11:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-07-20 01:11:35,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:35,748 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:35,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:35,955 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:35,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-07-20 01:11:35,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:35,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953376650] [2020-07-20 01:11:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-20 01:11:37,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953376650] [2020-07-20 01:11:37,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541248651] [2020-07-20 01:11:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52956e28 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:37,255 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52956e28 issued 2 check-sat command(s) [2020-07-20 01:11:37,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:37,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-20 01:11:37,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-20 01:11:37,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:37,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-07-20 01:11:37,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649820236] [2020-07-20 01:11:37,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 01:11:37,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 01:11:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-07-20 01:11:37,361 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 30 states. [2020-07-20 01:11:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:37,852 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-07-20 01:11:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 01:11:37,852 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2020-07-20 01:11:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:37,854 INFO L225 Difference]: With dead ends: 104 [2020-07-20 01:11:37,854 INFO L226 Difference]: Without dead ends: 100 [2020-07-20 01:11:37,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 01:11:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-20 01:11:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-07-20 01:11:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-20 01:11:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-07-20 01:11:37,861 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 174 [2020-07-20 01:11:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:37,861 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-07-20 01:11:37,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 01:11:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-07-20 01:11:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-20 01:11:37,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:37,863 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:38,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-07-20 01:11:38,071 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-07-20 01:11:38,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:38,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630069608] [2020-07-20 01:11:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-20 01:11:39,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630069608] [2020-07-20 01:11:39,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381573742] [2020-07-20 01:11:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@563dae4d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:39,324 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@563dae4d issued 2 check-sat command(s) [2020-07-20 01:11:39,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:39,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-20 01:11:39,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-20 01:11:39,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:39,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-20 01:11:39,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50848615] [2020-07-20 01:11:39,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 01:11:39,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 01:11:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2020-07-20 01:11:39,417 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 31 states. [2020-07-20 01:11:39,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:39,928 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-07-20 01:11:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 01:11:39,928 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 181 [2020-07-20 01:11:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:39,930 INFO L225 Difference]: With dead ends: 107 [2020-07-20 01:11:39,930 INFO L226 Difference]: Without dead ends: 103 [2020-07-20 01:11:39,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2020-07-20 01:11:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-20 01:11:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-07-20 01:11:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-20 01:11:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-07-20 01:11:39,942 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 181 [2020-07-20 01:11:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:39,942 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-07-20 01:11:39,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 01:11:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-07-20 01:11:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-20 01:11:39,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:39,944 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:40,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:40,158 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:40,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-07-20 01:11:40,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:40,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298822388] [2020-07-20 01:11:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-20 01:11:41,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298822388] [2020-07-20 01:11:41,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150407896] [2020-07-20 01:11:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6cf686c5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:41,577 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6cf686c5 issued 2 check-sat command(s) [2020-07-20 01:11:41,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:41,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 54 conjunts are in the unsatisfiable core [2020-07-20 01:11:41,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-20 01:11:41,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:41,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-07-20 01:11:41,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733599384] [2020-07-20 01:11:41,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-20 01:11:41,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-20 01:11:41,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=579, Unknown=0, NotChecked=0, Total=992 [2020-07-20 01:11:41,691 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 32 states. [2020-07-20 01:11:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:42,355 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-07-20 01:11:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 01:11:42,355 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 188 [2020-07-20 01:11:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:42,357 INFO L225 Difference]: With dead ends: 110 [2020-07-20 01:11:42,357 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 01:11:42,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2020-07-20 01:11:42,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 01:11:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-20 01:11:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 01:11:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-07-20 01:11:42,366 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 188 [2020-07-20 01:11:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:42,367 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-07-20 01:11:42,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-20 01:11:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-07-20 01:11:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-20 01:11:42,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:42,370 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:42,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-07-20 01:11:42,585 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-07-20 01:11:42,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:42,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457058581] [2020-07-20 01:11:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-20 01:11:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457058581] [2020-07-20 01:11:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711915521] [2020-07-20 01:11:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@22b57e18 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:44,641 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@22b57e18 issued 2 check-sat command(s) [2020-07-20 01:11:44,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:44,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 56 conjunts are in the unsatisfiable core [2020-07-20 01:11:44,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-20 01:11:44,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:44,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-07-20 01:11:44,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638400408] [2020-07-20 01:11:44,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-20 01:11:44,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-20 01:11:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=614, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 01:11:44,752 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 33 states. [2020-07-20 01:11:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:45,297 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-07-20 01:11:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 01:11:45,297 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 195 [2020-07-20 01:11:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:45,299 INFO L225 Difference]: With dead ends: 113 [2020-07-20 01:11:45,300 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 01:11:45,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1338, Invalid=2322, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 01:11:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 01:11:45,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-07-20 01:11:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-20 01:11:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-07-20 01:11:45,307 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 195 [2020-07-20 01:11:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:45,307 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-07-20 01:11:45,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-20 01:11:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-07-20 01:11:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-20 01:11:45,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:45,309 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:45,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-07-20 01:11:45,522 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:45,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-07-20 01:11:45,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:45,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758971931] [2020-07-20 01:11:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-20 01:11:46,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758971931] [2020-07-20 01:11:46,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437726384] [2020-07-20 01:11:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ed2dd92 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:47,061 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ed2dd92 issued 2 check-sat command(s) [2020-07-20 01:11:47,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-20 01:11:47,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-20 01:11:47,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:47,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2020-07-20 01:11:47,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200487723] [2020-07-20 01:11:47,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-20 01:11:47,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-20 01:11:47,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=650, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 01:11:47,310 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 34 states. [2020-07-20 01:11:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:47,931 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-07-20 01:11:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-20 01:11:47,931 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 202 [2020-07-20 01:11:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:47,933 INFO L225 Difference]: With dead ends: 116 [2020-07-20 01:11:47,933 INFO L226 Difference]: Without dead ends: 112 [2020-07-20 01:11:47,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1429, Invalid=2477, Unknown=0, NotChecked=0, Total=3906 [2020-07-20 01:11:47,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-20 01:11:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-07-20 01:11:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-20 01:11:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-20 01:11:47,940 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 202 [2020-07-20 01:11:47,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:47,941 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-20 01:11:47,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-20 01:11:47,941 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-20 01:11:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-20 01:11:47,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:47,943 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:48,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-07-20 01:11:48,151 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:48,152 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-07-20 01:11:48,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:48,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765168141] [2020-07-20 01:11:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-20 01:11:49,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765168141] [2020-07-20 01:11:49,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115311872] [2020-07-20 01:11:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60529115 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:49,738 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60529115 issued 2 check-sat command(s) [2020-07-20 01:11:49,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-20 01:11:49,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-20 01:11:49,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:49,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-07-20 01:11:49,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580137875] [2020-07-20 01:11:49,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-20 01:11:49,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-20 01:11:49,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=687, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 01:11:49,887 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 35 states. [2020-07-20 01:11:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:50,495 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-07-20 01:11:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 01:11:50,495 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 209 [2020-07-20 01:11:50,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:50,497 INFO L225 Difference]: With dead ends: 119 [2020-07-20 01:11:50,497 INFO L226 Difference]: Without dead ends: 115 [2020-07-20 01:11:50,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1523, Invalid=2637, Unknown=0, NotChecked=0, Total=4160 [2020-07-20 01:11:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-20 01:11:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-20 01:11:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-20 01:11:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-07-20 01:11:50,505 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 209 [2020-07-20 01:11:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:50,505 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-07-20 01:11:50,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-20 01:11:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-07-20 01:11:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-07-20 01:11:50,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:50,507 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:50,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:50,721 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-07-20 01:11:50,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:50,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590281043] [2020-07-20 01:11:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-20 01:11:52,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590281043] [2020-07-20 01:11:52,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177448559] [2020-07-20 01:11:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@8f06029 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:52,457 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@8f06029 issued 2 check-sat command(s) [2020-07-20 01:11:52,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:52,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-20 01:11:52,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-20 01:11:52,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:52,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-07-20 01:11:52,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035566892] [2020-07-20 01:11:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 01:11:52,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:52,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 01:11:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=725, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 01:11:52,569 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 36 states. [2020-07-20 01:11:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:53,190 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-20 01:11:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-20 01:11:53,191 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 216 [2020-07-20 01:11:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:53,193 INFO L225 Difference]: With dead ends: 122 [2020-07-20 01:11:53,193 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 01:11:53,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1620, Invalid=2802, Unknown=0, NotChecked=0, Total=4422 [2020-07-20 01:11:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 01:11:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-07-20 01:11:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-20 01:11:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-07-20 01:11:53,199 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 216 [2020-07-20 01:11:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:53,200 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-07-20 01:11:53,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 01:11:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-07-20 01:11:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-20 01:11:53,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:53,202 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:53,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-07-20 01:11:53,415 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-07-20 01:11:53,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:53,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553324034] [2020-07-20 01:11:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-20 01:11:55,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553324034] [2020-07-20 01:11:55,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413752170] [2020-07-20 01:11:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@437c4e4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:55,291 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@437c4e4 issued 2 check-sat command(s) [2020-07-20 01:11:55,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:55,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-20 01:11:55,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-20 01:11:55,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:55,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-07-20 01:11:55,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682785929] [2020-07-20 01:11:55,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 01:11:55,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:55,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 01:11:55,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=764, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 01:11:55,416 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 37 states. [2020-07-20 01:11:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:56,062 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-07-20 01:11:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 01:11:56,063 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 223 [2020-07-20 01:11:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:56,065 INFO L225 Difference]: With dead ends: 125 [2020-07-20 01:11:56,065 INFO L226 Difference]: Without dead ends: 121 [2020-07-20 01:11:56,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1720, Invalid=2972, Unknown=0, NotChecked=0, Total=4692 [2020-07-20 01:11:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-20 01:11:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-07-20 01:11:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-20 01:11:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-07-20 01:11:56,075 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 223 [2020-07-20 01:11:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:56,076 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-07-20 01:11:56,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 01:11:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-07-20 01:11:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-07-20 01:11:56,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:56,079 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:56,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:56,286 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-07-20 01:11:56,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:56,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998605783] [2020-07-20 01:11:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-20 01:11:58,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998605783] [2020-07-20 01:11:58,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259492816] [2020-07-20 01:11:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c20b4c2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:58,582 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c20b4c2 issued 2 check-sat command(s) [2020-07-20 01:11:58,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:58,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 66 conjunts are in the unsatisfiable core [2020-07-20 01:11:58,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-20 01:11:58,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:58,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2020-07-20 01:11:58,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282502198] [2020-07-20 01:11:58,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-20 01:11:58,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:58,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-20 01:11:58,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=804, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 01:11:58,712 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 38 states. [2020-07-20 01:11:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:59,397 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-07-20 01:11:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-20 01:11:59,398 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 230 [2020-07-20 01:11:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:59,400 INFO L225 Difference]: With dead ends: 128 [2020-07-20 01:11:59,400 INFO L226 Difference]: Without dead ends: 124 [2020-07-20 01:11:59,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2020-07-20 01:11:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-20 01:11:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-20 01:11:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-20 01:11:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-07-20 01:11:59,406 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 230 [2020-07-20 01:11:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:59,407 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-07-20 01:11:59,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-20 01:11:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-07-20 01:11:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-20 01:11:59,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:59,409 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:59,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-07-20 01:11:59,623 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:59,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-07-20 01:11:59,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:59,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114526376] [2020-07-20 01:11:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:11:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-20 01:12:01,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114526376] [2020-07-20 01:12:01,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162185124] [2020-07-20 01:12:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@fcaa04b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:01,933 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@fcaa04b issued 2 check-sat command(s) [2020-07-20 01:12:01,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:01,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-20 01:12:01,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-20 01:12:02,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:02,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-07-20 01:12:02,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223435029] [2020-07-20 01:12:02,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-20 01:12:02,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-20 01:12:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=845, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 01:12:02,079 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 39 states. [2020-07-20 01:12:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:02,834 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-07-20 01:12:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-20 01:12:02,835 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 237 [2020-07-20 01:12:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:02,837 INFO L225 Difference]: With dead ends: 131 [2020-07-20 01:12:02,837 INFO L226 Difference]: Without dead ends: 127 [2020-07-20 01:12:02,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1929, Invalid=3327, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 01:12:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-20 01:12:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-07-20 01:12:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 01:12:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2020-07-20 01:12:02,843 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 237 [2020-07-20 01:12:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:02,844 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2020-07-20 01:12:02,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-20 01:12:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2020-07-20 01:12:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-20 01:12:02,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:02,846 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:03,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-07-20 01:12:03,059 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-07-20 01:12:03,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:03,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757220088] [2020-07-20 01:12:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-20 01:12:05,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757220088] [2020-07-20 01:12:05,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462144368] [2020-07-20 01:12:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2cb1a2eb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:05,516 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2cb1a2eb issued 2 check-sat command(s) [2020-07-20 01:12:05,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:05,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-20 01:12:05,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-20 01:12:05,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:05,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2020-07-20 01:12:05,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954369522] [2020-07-20 01:12:05,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-20 01:12:05,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:05,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-20 01:12:05,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=887, Unknown=0, NotChecked=0, Total=1560 [2020-07-20 01:12:05,694 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 40 states. [2020-07-20 01:12:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:06,464 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-07-20 01:12:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-20 01:12:06,465 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 244 [2020-07-20 01:12:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:06,466 INFO L225 Difference]: With dead ends: 134 [2020-07-20 01:12:06,466 INFO L226 Difference]: Without dead ends: 130 [2020-07-20 01:12:06,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2038, Invalid=3512, Unknown=0, NotChecked=0, Total=5550 [2020-07-20 01:12:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-20 01:12:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-07-20 01:12:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 01:12:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-07-20 01:12:06,472 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 244 [2020-07-20 01:12:06,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:06,473 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-07-20 01:12:06,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-20 01:12:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-07-20 01:12:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-20 01:12:06,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:06,475 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:06,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-07-20 01:12:06,689 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:06,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-07-20 01:12:06,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:06,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147330489] [2020-07-20 01:12:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-20 01:12:09,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147330489] [2020-07-20 01:12:09,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177251516] [2020-07-20 01:12:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33d816a1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:09,289 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33d816a1 issued 2 check-sat command(s) [2020-07-20 01:12:09,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:09,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 72 conjunts are in the unsatisfiable core [2020-07-20 01:12:09,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-20 01:12:09,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:09,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-07-20 01:12:09,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143323235] [2020-07-20 01:12:09,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-20 01:12:09,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:09,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-20 01:12:09,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=930, Unknown=0, NotChecked=0, Total=1640 [2020-07-20 01:12:09,429 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 41 states. [2020-07-20 01:12:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:10,252 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-07-20 01:12:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 01:12:10,252 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 251 [2020-07-20 01:12:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:10,254 INFO L225 Difference]: With dead ends: 137 [2020-07-20 01:12:10,254 INFO L226 Difference]: Without dead ends: 133 [2020-07-20 01:12:10,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2150, Invalid=3702, Unknown=0, NotChecked=0, Total=5852 [2020-07-20 01:12:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-20 01:12:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-20 01:12:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-20 01:12:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2020-07-20 01:12:10,260 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 251 [2020-07-20 01:12:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:10,261 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2020-07-20 01:12:10,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-20 01:12:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2020-07-20 01:12:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-20 01:12:10,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:10,263 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:10,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-07-20 01:12:10,476 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:10,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-07-20 01:12:10,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:10,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559624663] [2020-07-20 01:12:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-20 01:12:13,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559624663] [2020-07-20 01:12:13,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091153787] [2020-07-20 01:12:13,291 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@159db3f5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:13,378 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@159db3f5 issued 2 check-sat command(s) [2020-07-20 01:12:13,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 74 conjunts are in the unsatisfiable core [2020-07-20 01:12:13,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-20 01:12:13,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:13,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2020-07-20 01:12:13,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594835760] [2020-07-20 01:12:13,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-20 01:12:13,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:13,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-20 01:12:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=974, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 01:12:13,581 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 42 states. [2020-07-20 01:12:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:14,393 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-07-20 01:12:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-20 01:12:14,394 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 258 [2020-07-20 01:12:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:14,395 INFO L225 Difference]: With dead ends: 140 [2020-07-20 01:12:14,395 INFO L226 Difference]: Without dead ends: 136 [2020-07-20 01:12:14,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2265, Invalid=3897, Unknown=0, NotChecked=0, Total=6162 [2020-07-20 01:12:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-20 01:12:14,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-07-20 01:12:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-20 01:12:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2020-07-20 01:12:14,402 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 258 [2020-07-20 01:12:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:14,403 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2020-07-20 01:12:14,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-20 01:12:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2020-07-20 01:12:14,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-20 01:12:14,404 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:14,405 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:14,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-07-20 01:12:14,618 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:14,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1327343593, now seen corresponding path program 36 times [2020-07-20 01:12:14,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:14,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138167028] [2020-07-20 01:12:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-20 01:12:17,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138167028] [2020-07-20 01:12:17,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532969286] [2020-07-20 01:12:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@32799221 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:17,631 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@32799221 issued 2 check-sat command(s) [2020-07-20 01:12:17,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 76 conjunts are in the unsatisfiable core [2020-07-20 01:12:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-20 01:12:17,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:17,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-07-20 01:12:17,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199075485] [2020-07-20 01:12:17,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-20 01:12:17,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:17,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-20 01:12:17,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2020-07-20 01:12:17,806 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 43 states. [2020-07-20 01:12:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:18,665 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-07-20 01:12:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-20 01:12:18,665 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 265 [2020-07-20 01:12:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:18,667 INFO L225 Difference]: With dead ends: 143 [2020-07-20 01:12:18,668 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 01:12:18,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2383, Invalid=4097, Unknown=0, NotChecked=0, Total=6480 [2020-07-20 01:12:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 01:12:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-07-20 01:12:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-07-20 01:12:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2020-07-20 01:12:18,674 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 265 [2020-07-20 01:12:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:18,674 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2020-07-20 01:12:18,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-20 01:12:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2020-07-20 01:12:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-20 01:12:18,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:18,676 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:18,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-07-20 01:12:18,877 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:18,878 INFO L82 PathProgramCache]: Analyzing trace with hash -742628704, now seen corresponding path program 37 times [2020-07-20 01:12:18,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:18,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606794191] [2020-07-20 01:12:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-20 01:12:21,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606794191] [2020-07-20 01:12:21,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398204198] [2020-07-20 01:12:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40d6202f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:22,079 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40d6202f issued 2 check-sat command(s) [2020-07-20 01:12:22,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:22,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 78 conjunts are in the unsatisfiable core [2020-07-20 01:12:22,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-20 01:12:22,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:22,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 44 [2020-07-20 01:12:22,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271447072] [2020-07-20 01:12:22,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-20 01:12:22,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:22,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-20 01:12:22,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=1065, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 01:12:22,234 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 44 states. [2020-07-20 01:12:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:23,129 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-07-20 01:12:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 01:12:23,129 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 272 [2020-07-20 01:12:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:23,131 INFO L225 Difference]: With dead ends: 146 [2020-07-20 01:12:23,131 INFO L226 Difference]: Without dead ends: 142 [2020-07-20 01:12:23,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2504, Invalid=4302, Unknown=0, NotChecked=0, Total=6806 [2020-07-20 01:12:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-20 01:12:23,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-20 01:12:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 01:12:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2020-07-20 01:12:23,137 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 272 [2020-07-20 01:12:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:23,138 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2020-07-20 01:12:23,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-20 01:12:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2020-07-20 01:12:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-20 01:12:23,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:23,140 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:23,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-07-20 01:12:23,355 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:23,356 INFO L82 PathProgramCache]: Analyzing trace with hash 571018495, now seen corresponding path program 38 times [2020-07-20 01:12:23,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:23,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361070443] [2020-07-20 01:12:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-20 01:12:27,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361070443] [2020-07-20 01:12:27,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532743872] [2020-07-20 01:12:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d20e6af No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:27,447 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d20e6af issued 2 check-sat command(s) [2020-07-20 01:12:27,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:27,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 80 conjunts are in the unsatisfiable core [2020-07-20 01:12:27,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-20 01:12:27,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:27,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-07-20 01:12:27,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461372098] [2020-07-20 01:12:27,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-20 01:12:27,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:27,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-20 01:12:27,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=868, Invalid=1112, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 01:12:27,624 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand 45 states. [2020-07-20 01:12:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:28,581 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-07-20 01:12:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 01:12:28,581 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 279 [2020-07-20 01:12:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:28,583 INFO L225 Difference]: With dead ends: 149 [2020-07-20 01:12:28,583 INFO L226 Difference]: Without dead ends: 145 [2020-07-20 01:12:28,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2628, Invalid=4512, Unknown=0, NotChecked=0, Total=7140 [2020-07-20 01:12:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-20 01:12:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-07-20 01:12:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-20 01:12:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-07-20 01:12:28,589 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 279 [2020-07-20 01:12:28,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:28,590 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-07-20 01:12:28,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-20 01:12:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-07-20 01:12:28,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-20 01:12:28,592 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:28,592 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:28,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-07-20 01:12:28,800 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash -708506358, now seen corresponding path program 39 times [2020-07-20 01:12:28,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:28,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775987448] [2020-07-20 01:12:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-20 01:12:32,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775987448] [2020-07-20 01:12:32,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355566296] [2020-07-20 01:12:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@28dc54a6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:32,686 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@28dc54a6 issued 2 check-sat command(s) [2020-07-20 01:12:32,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:32,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 82 conjunts are in the unsatisfiable core [2020-07-20 01:12:32,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-20 01:12:32,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:32,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 46 [2020-07-20 01:12:32,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837810090] [2020-07-20 01:12:32,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-20 01:12:32,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:32,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-20 01:12:32,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=1160, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 01:12:32,858 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 46 states. [2020-07-20 01:12:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:34,071 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-07-20 01:12:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-20 01:12:34,072 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 286 [2020-07-20 01:12:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:34,073 INFO L225 Difference]: With dead ends: 152 [2020-07-20 01:12:34,073 INFO L226 Difference]: Without dead ends: 148 [2020-07-20 01:12:34,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2755, Invalid=4727, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 01:12:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-07-20 01:12:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-07-20 01:12:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 01:12:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-07-20 01:12:34,079 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 286 [2020-07-20 01:12:34,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:34,080 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-07-20 01:12:34,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-20 01:12:34,080 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-07-20 01:12:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-07-20 01:12:34,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:34,082 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:34,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:34,283 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:34,283 INFO L82 PathProgramCache]: Analyzing trace with hash 287341333, now seen corresponding path program 40 times [2020-07-20 01:12:34,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:34,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875567966] [2020-07-20 01:12:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-20 01:12:37,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875567966] [2020-07-20 01:12:37,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932733390] [2020-07-20 01:12:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7c7c43c6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:37,875 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7c7c43c6 issued 2 check-sat command(s) [2020-07-20 01:12:37,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:37,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 84 conjunts are in the unsatisfiable core [2020-07-20 01:12:37,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-20 01:12:38,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:38,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-07-20 01:12:38,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625110303] [2020-07-20 01:12:38,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-20 01:12:38,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:38,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-20 01:12:38,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=1209, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 01:12:38,053 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 47 states. [2020-07-20 01:12:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:39,175 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-07-20 01:12:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-20 01:12:39,176 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 293 [2020-07-20 01:12:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:39,178 INFO L225 Difference]: With dead ends: 155 [2020-07-20 01:12:39,178 INFO L226 Difference]: Without dead ends: 151 [2020-07-20 01:12:39,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2885, Invalid=4947, Unknown=0, NotChecked=0, Total=7832 [2020-07-20 01:12:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-20 01:12:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-20 01:12:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-20 01:12:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2020-07-20 01:12:39,186 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 293 [2020-07-20 01:12:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:39,186 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2020-07-20 01:12:39,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-20 01:12:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2020-07-20 01:12:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-07-20 01:12:39,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:39,188 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:39,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:39,402 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:39,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2006277748, now seen corresponding path program 41 times [2020-07-20 01:12:39,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:39,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700955002] [2020-07-20 01:12:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-20 01:12:42,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700955002] [2020-07-20 01:12:42,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88767740] [2020-07-20 01:12:42,898 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@27956fd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:43,003 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@27956fd issued 2 check-sat command(s) [2020-07-20 01:12:43,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:43,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 86 conjunts are in the unsatisfiable core [2020-07-20 01:12:43,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-20 01:12:43,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:43,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 48 [2020-07-20 01:12:43,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814160588] [2020-07-20 01:12:43,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-20 01:12:43,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:43,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-20 01:12:43,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=1259, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 01:12:43,198 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 48 states. [2020-07-20 01:12:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:44,222 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2020-07-20 01:12:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-07-20 01:12:44,223 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 300 [2020-07-20 01:12:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:44,225 INFO L225 Difference]: With dead ends: 158 [2020-07-20 01:12:44,225 INFO L226 Difference]: Without dead ends: 154 [2020-07-20 01:12:44,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3018, Invalid=5172, Unknown=0, NotChecked=0, Total=8190 [2020-07-20 01:12:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-20 01:12:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-07-20 01:12:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-20 01:12:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2020-07-20 01:12:44,233 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 300 [2020-07-20 01:12:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:44,233 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2020-07-20 01:12:44,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-20 01:12:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2020-07-20 01:12:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-20 01:12:44,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:44,235 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:44,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-07-20 01:12:44,451 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:44,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:44,452 INFO L82 PathProgramCache]: Analyzing trace with hash 707039787, now seen corresponding path program 42 times [2020-07-20 01:12:44,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:44,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796080645] [2020-07-20 01:12:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-20 01:12:48,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796080645] [2020-07-20 01:12:48,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274351556] [2020-07-20 01:12:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a56ce95 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:48,313 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a56ce95 issued 2 check-sat command(s) [2020-07-20 01:12:48,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:48,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 88 conjunts are in the unsatisfiable core [2020-07-20 01:12:48,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-20 01:12:48,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:48,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-07-20 01:12:48,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820020301] [2020-07-20 01:12:48,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-20 01:12:48,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-20 01:12:48,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1042, Invalid=1310, Unknown=0, NotChecked=0, Total=2352 [2020-07-20 01:12:48,513 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand 49 states. [2020-07-20 01:12:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:49,587 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-07-20 01:12:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-20 01:12:49,587 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 307 [2020-07-20 01:12:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:49,589 INFO L225 Difference]: With dead ends: 161 [2020-07-20 01:12:49,589 INFO L226 Difference]: Without dead ends: 157 [2020-07-20 01:12:49,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3154, Invalid=5402, Unknown=0, NotChecked=0, Total=8556 [2020-07-20 01:12:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-20 01:12:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-07-20 01:12:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-20 01:12:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2020-07-20 01:12:49,596 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 307 [2020-07-20 01:12:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:49,596 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2020-07-20 01:12:49,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-20 01:12:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2020-07-20 01:12:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-07-20 01:12:49,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:49,598 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:49,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:49,814 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1671645474, now seen corresponding path program 43 times [2020-07-20 01:12:49,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:49,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353031890] [2020-07-20 01:12:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-20 01:12:53,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353031890] [2020-07-20 01:12:53,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564284236] [2020-07-20 01:12:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f8e95d7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:53,857 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f8e95d7 issued 2 check-sat command(s) [2020-07-20 01:12:53,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:53,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 90 conjunts are in the unsatisfiable core [2020-07-20 01:12:53,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-20 01:12:54,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:54,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 50 [2020-07-20 01:12:54,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521628061] [2020-07-20 01:12:54,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-20 01:12:54,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:54,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-20 01:12:54,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=1362, Unknown=0, NotChecked=0, Total=2450 [2020-07-20 01:12:54,019 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 50 states. [2020-07-20 01:12:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:12:55,137 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-07-20 01:12:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-20 01:12:55,137 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 314 [2020-07-20 01:12:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:12:55,139 INFO L225 Difference]: With dead ends: 164 [2020-07-20 01:12:55,139 INFO L226 Difference]: Without dead ends: 160 [2020-07-20 01:12:55,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3293, Invalid=5637, Unknown=0, NotChecked=0, Total=8930 [2020-07-20 01:12:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-20 01:12:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-20 01:12:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-20 01:12:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2020-07-20 01:12:55,147 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 314 [2020-07-20 01:12:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:12:55,147 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2020-07-20 01:12:55,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-20 01:12:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2020-07-20 01:12:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-20 01:12:55,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:12:55,149 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:12:55,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:55,363 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:12:55,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:12:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash -797576639, now seen corresponding path program 44 times [2020-07-20 01:12:55,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:12:55,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009999788] [2020-07-20 01:12:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:12:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:12:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-20 01:12:59,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009999788] [2020-07-20 01:12:59,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655998734] [2020-07-20 01:12:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46b4bba No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:12:59,549 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46b4bba issued 2 check-sat command(s) [2020-07-20 01:12:59,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:12:59,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 92 conjunts are in the unsatisfiable core [2020-07-20 01:12:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:12:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-20 01:12:59,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:12:59,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-07-20 01:12:59,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610333572] [2020-07-20 01:12:59,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-20 01:12:59,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:12:59,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-20 01:12:59,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 01:12:59,767 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 51 states. [2020-07-20 01:13:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:00,862 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-07-20 01:13:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-20 01:13:00,863 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 321 [2020-07-20 01:13:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:00,865 INFO L225 Difference]: With dead ends: 167 [2020-07-20 01:13:00,865 INFO L226 Difference]: Without dead ends: 163 [2020-07-20 01:13:00,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3435, Invalid=5877, Unknown=0, NotChecked=0, Total=9312 [2020-07-20 01:13:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-07-20 01:13:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-07-20 01:13:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-20 01:13:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2020-07-20 01:13:00,871 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 321 [2020-07-20 01:13:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:00,872 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2020-07-20 01:13:00,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-20 01:13:00,872 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2020-07-20 01:13:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 01:13:00,874 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:00,874 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:01,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-07-20 01:13:01,088 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:01,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash 44725832, now seen corresponding path program 45 times [2020-07-20 01:13:01,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:01,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336713588] [2020-07-20 01:13:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-20 01:13:05,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336713588] [2020-07-20 01:13:05,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501956847] [2020-07-20 01:13:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b0f5bf No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:05,541 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b0f5bf issued 2 check-sat command(s) [2020-07-20 01:13:05,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:05,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 94 conjunts are in the unsatisfiable core [2020-07-20 01:13:05,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-20 01:13:05,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:05,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 52 [2020-07-20 01:13:05,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748937861] [2020-07-20 01:13:05,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-20 01:13:05,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:05,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-20 01:13:05,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 01:13:05,755 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 52 states. [2020-07-20 01:13:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:06,916 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-20 01:13:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-20 01:13:06,917 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 328 [2020-07-20 01:13:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:06,918 INFO L225 Difference]: With dead ends: 170 [2020-07-20 01:13:06,918 INFO L226 Difference]: Without dead ends: 166 [2020-07-20 01:13:06,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3580, Invalid=6122, Unknown=0, NotChecked=0, Total=9702 [2020-07-20 01:13:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-20 01:13:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-20 01:13:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-20 01:13:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2020-07-20 01:13:06,925 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 328 [2020-07-20 01:13:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:06,925 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2020-07-20 01:13:06,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-20 01:13:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2020-07-20 01:13:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 01:13:06,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:06,928 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:07,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-07-20 01:13:07,141 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash 454376279, now seen corresponding path program 46 times [2020-07-20 01:13:07,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:07,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082914096] [2020-07-20 01:13:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-20 01:13:11,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082914096] [2020-07-20 01:13:11,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009361716] [2020-07-20 01:13:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@27e0c625 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:11,859 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@27e0c625 issued 2 check-sat command(s) [2020-07-20 01:13:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:11,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-20 01:13:11,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-20 01:13:12,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:12,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-07-20 01:13:12,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183309419] [2020-07-20 01:13:12,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 01:13:12,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:12,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 01:13:12,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1232, Invalid=1524, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 01:13:12,035 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand 53 states. [2020-07-20 01:13:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:13,256 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-07-20 01:13:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-20 01:13:13,257 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 335 [2020-07-20 01:13:13,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:13,259 INFO L225 Difference]: With dead ends: 173 [2020-07-20 01:13:13,259 INFO L226 Difference]: Without dead ends: 169 [2020-07-20 01:13:13,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3728, Invalid=6372, Unknown=0, NotChecked=0, Total=10100 [2020-07-20 01:13:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-20 01:13:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-20 01:13:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-20 01:13:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2020-07-20 01:13:13,266 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 335 [2020-07-20 01:13:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:13,266 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2020-07-20 01:13:13,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 01:13:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2020-07-20 01:13:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-20 01:13:13,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:13,269 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:13,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-07-20 01:13:13,484 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:13,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:13,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1718484146, now seen corresponding path program 47 times [2020-07-20 01:13:13,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:13,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186160681] [2020-07-20 01:13:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-20 01:13:18,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186160681] [2020-07-20 01:13:18,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914194657] [2020-07-20 01:13:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38b66c5f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:18,369 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38b66c5f issued 2 check-sat command(s) [2020-07-20 01:13:18,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:18,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-20 01:13:18,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-20 01:13:18,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:18,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 54 [2020-07-20 01:13:18,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385130019] [2020-07-20 01:13:18,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-20 01:13:18,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:18,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-20 01:13:18,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=1580, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 01:13:18,647 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand 54 states. [2020-07-20 01:13:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:20,042 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-07-20 01:13:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-20 01:13:20,043 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 342 [2020-07-20 01:13:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:20,045 INFO L225 Difference]: With dead ends: 176 [2020-07-20 01:13:20,045 INFO L226 Difference]: Without dead ends: 172 [2020-07-20 01:13:20,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3879, Invalid=6627, Unknown=0, NotChecked=0, Total=10506 [2020-07-20 01:13:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-20 01:13:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-07-20 01:13:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-20 01:13:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-07-20 01:13:20,052 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 342 [2020-07-20 01:13:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:20,052 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-07-20 01:13:20,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-20 01:13:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-07-20 01:13:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-20 01:13:20,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:20,055 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:20,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:20,269 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:20,269 INFO L82 PathProgramCache]: Analyzing trace with hash 849546605, now seen corresponding path program 48 times [2020-07-20 01:13:20,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:20,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203504732] [2020-07-20 01:13:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-20 01:13:25,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203504732] [2020-07-20 01:13:25,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647218753] [2020-07-20 01:13:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6bb2211e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:25,774 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6bb2211e issued 2 check-sat command(s) [2020-07-20 01:13:25,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:25,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-20 01:13:25,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-20 01:13:25,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:25,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-07-20 01:13:25,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477511439] [2020-07-20 01:13:25,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-20 01:13:25,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-20 01:13:25,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=1637, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 01:13:25,997 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 55 states. [2020-07-20 01:13:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:27,305 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-07-20 01:13:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-20 01:13:27,306 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 349 [2020-07-20 01:13:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:27,308 INFO L225 Difference]: With dead ends: 179 [2020-07-20 01:13:27,308 INFO L226 Difference]: Without dead ends: 175 [2020-07-20 01:13:27,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4033, Invalid=6887, Unknown=0, NotChecked=0, Total=10920 [2020-07-20 01:13:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-20 01:13:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-07-20 01:13:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-07-20 01:13:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2020-07-20 01:13:27,316 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 349 [2020-07-20 01:13:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:27,316 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 181 transitions. [2020-07-20 01:13:27,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-20 01:13:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 181 transitions. [2020-07-20 01:13:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-07-20 01:13:27,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:27,319 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:27,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-07-20 01:13:27,527 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1560892900, now seen corresponding path program 49 times [2020-07-20 01:13:27,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:27,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855263332] [2020-07-20 01:13:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-20 01:13:33,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855263332] [2020-07-20 01:13:33,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689410148] [2020-07-20 01:13:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7618ec54 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:33,370 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7618ec54 issued 2 check-sat command(s) [2020-07-20 01:13:33,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:33,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 102 conjunts are in the unsatisfiable core [2020-07-20 01:13:33,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-20 01:13:33,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:33,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 56 [2020-07-20 01:13:33,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024702841] [2020-07-20 01:13:33,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-20 01:13:33,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:33,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-20 01:13:33,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=1695, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 01:13:33,601 INFO L87 Difference]: Start difference. First operand 173 states and 181 transitions. Second operand 56 states. [2020-07-20 01:13:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:34,993 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2020-07-20 01:13:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-20 01:13:34,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 356 [2020-07-20 01:13:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:34,996 INFO L225 Difference]: With dead ends: 182 [2020-07-20 01:13:34,997 INFO L226 Difference]: Without dead ends: 178 [2020-07-20 01:13:34,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4190, Invalid=7152, Unknown=0, NotChecked=0, Total=11342 [2020-07-20 01:13:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-20 01:13:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-20 01:13:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-20 01:13:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2020-07-20 01:13:35,003 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 356 [2020-07-20 01:13:35,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:35,003 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2020-07-20 01:13:35,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-20 01:13:35,004 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2020-07-20 01:13:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-07-20 01:13:35,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:35,006 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:35,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:35,215 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:35,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1352660861, now seen corresponding path program 50 times [2020-07-20 01:13:35,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:35,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049025285] [2020-07-20 01:13:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-20 01:13:40,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049025285] [2020-07-20 01:13:40,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061254474] [2020-07-20 01:13:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a41a8f4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:40,784 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a41a8f4 issued 2 check-sat command(s) [2020-07-20 01:13:40,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:40,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 104 conjunts are in the unsatisfiable core [2020-07-20 01:13:40,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-20 01:13:41,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:41,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-07-20 01:13:41,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605813398] [2020-07-20 01:13:41,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-20 01:13:41,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-20 01:13:41,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=1754, Unknown=0, NotChecked=0, Total=3192 [2020-07-20 01:13:41,009 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand 57 states. [2020-07-20 01:13:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:42,434 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-07-20 01:13:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-20 01:13:42,435 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 363 [2020-07-20 01:13:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:42,437 INFO L225 Difference]: With dead ends: 185 [2020-07-20 01:13:42,438 INFO L226 Difference]: Without dead ends: 181 [2020-07-20 01:13:42,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4350, Invalid=7422, Unknown=0, NotChecked=0, Total=11772 [2020-07-20 01:13:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-07-20 01:13:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-07-20 01:13:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-07-20 01:13:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2020-07-20 01:13:42,445 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 363 [2020-07-20 01:13:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:42,446 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2020-07-20 01:13:42,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-20 01:13:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2020-07-20 01:13:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-07-20 01:13:42,448 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:42,448 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:42,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:42,664 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:42,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash -722215290, now seen corresponding path program 51 times [2020-07-20 01:13:42,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:42,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406940428] [2020-07-20 01:13:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-20 01:13:48,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406940428] [2020-07-20 01:13:48,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780116432] [2020-07-20 01:13:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19b6102 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:48,580 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19b6102 issued 2 check-sat command(s) [2020-07-20 01:13:48,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:48,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 106 conjunts are in the unsatisfiable core [2020-07-20 01:13:48,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-20 01:13:48,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:48,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 58 [2020-07-20 01:13:48,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203960037] [2020-07-20 01:13:48,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-20 01:13:48,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-20 01:13:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1492, Invalid=1814, Unknown=0, NotChecked=0, Total=3306 [2020-07-20 01:13:48,783 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 58 states. [2020-07-20 01:13:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:50,204 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-07-20 01:13:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-20 01:13:50,205 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 370 [2020-07-20 01:13:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:50,206 INFO L225 Difference]: With dead ends: 188 [2020-07-20 01:13:50,206 INFO L226 Difference]: Without dead ends: 184 [2020-07-20 01:13:50,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4513, Invalid=7697, Unknown=0, NotChecked=0, Total=12210 [2020-07-20 01:13:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-20 01:13:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-07-20 01:13:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-07-20 01:13:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2020-07-20 01:13:50,214 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 370 [2020-07-20 01:13:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:50,214 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2020-07-20 01:13:50,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-20 01:13:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2020-07-20 01:13:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-07-20 01:13:50,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:50,217 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:50,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-07-20 01:13:50,431 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash -148058983, now seen corresponding path program 52 times [2020-07-20 01:13:50,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:50,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929138287] [2020-07-20 01:13:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-20 01:13:56,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929138287] [2020-07-20 01:13:56,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960049319] [2020-07-20 01:13:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b46248c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:56,609 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b46248c issued 2 check-sat command(s) [2020-07-20 01:13:56,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:13:56,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 108 conjunts are in the unsatisfiable core [2020-07-20 01:13:56,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:13:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-20 01:13:56,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:13:56,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-07-20 01:13:56,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555848285] [2020-07-20 01:13:56,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-20 01:13:56,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:13:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-20 01:13:56,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1547, Invalid=1875, Unknown=0, NotChecked=0, Total=3422 [2020-07-20 01:13:56,974 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand 59 states. [2020-07-20 01:13:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:13:58,553 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-07-20 01:13:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-20 01:13:58,553 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 377 [2020-07-20 01:13:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:13:58,555 INFO L225 Difference]: With dead ends: 191 [2020-07-20 01:13:58,555 INFO L226 Difference]: Without dead ends: 187 [2020-07-20 01:13:58,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4679, Invalid=7977, Unknown=0, NotChecked=0, Total=12656 [2020-07-20 01:13:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-20 01:13:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-20 01:13:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-20 01:13:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2020-07-20 01:13:58,564 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 377 [2020-07-20 01:13:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:13:58,564 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2020-07-20 01:13:58,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-20 01:13:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2020-07-20 01:13:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-07-20 01:13:58,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:13:58,567 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:13:58,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:13:58,782 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:13:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:13:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2088040944, now seen corresponding path program 53 times [2020-07-20 01:13:58,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:13:58,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491403762] [2020-07-20 01:13:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:13:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:13:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-20 01:14:05,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491403762] [2020-07-20 01:14:05,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612664031] [2020-07-20 01:14:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@186bb61 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:05,272 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@186bb61 issued 2 check-sat command(s) [2020-07-20 01:14:05,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:14:05,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 110 conjunts are in the unsatisfiable core [2020-07-20 01:14:05,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:14:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-20 01:14:05,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:14:05,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 60 [2020-07-20 01:14:05,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558865651] [2020-07-20 01:14:05,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-20 01:14:05,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:14:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-20 01:14:05,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=1937, Unknown=0, NotChecked=0, Total=3540 [2020-07-20 01:14:05,521 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand 60 states. [2020-07-20 01:14:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:14:07,092 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2020-07-20 01:14:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-07-20 01:14:07,093 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 384 [2020-07-20 01:14:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:14:07,095 INFO L225 Difference]: With dead ends: 194 [2020-07-20 01:14:07,095 INFO L226 Difference]: Without dead ends: 190 [2020-07-20 01:14:07,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2969 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4848, Invalid=8262, Unknown=0, NotChecked=0, Total=13110 [2020-07-20 01:14:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-20 01:14:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-07-20 01:14:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-20 01:14:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 196 transitions. [2020-07-20 01:14:07,101 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 196 transitions. Word has length 384 [2020-07-20 01:14:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:14:07,102 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 196 transitions. [2020-07-20 01:14:07,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-20 01:14:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 196 transitions. [2020-07-20 01:14:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-20 01:14:07,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:14:07,104 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:14:07,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-07-20 01:14:07,313 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:14:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:14:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1685456465, now seen corresponding path program 54 times [2020-07-20 01:14:07,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:14:07,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057343961] [2020-07-20 01:14:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:14:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-20 01:14:13,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057343961] [2020-07-20 01:14:13,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349761241] [2020-07-20 01:14:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@710c9258 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:14,016 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@710c9258 issued 2 check-sat command(s) [2020-07-20 01:14:14,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:14:14,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 112 conjunts are in the unsatisfiable core [2020-07-20 01:14:14,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:14:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-20 01:14:14,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:14:14,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-07-20 01:14:14,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725620469] [2020-07-20 01:14:14,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-20 01:14:14,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:14:14,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-20 01:14:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1660, Invalid=2000, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 01:14:14,229 INFO L87 Difference]: Start difference. First operand 188 states and 196 transitions. Second operand 61 states. [2020-07-20 01:14:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:14:15,850 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2020-07-20 01:14:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-20 01:14:15,851 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 391 [2020-07-20 01:14:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:14:15,852 INFO L225 Difference]: With dead ends: 197 [2020-07-20 01:14:15,853 INFO L226 Difference]: Without dead ends: 193 [2020-07-20 01:14:15,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5020, Invalid=8552, Unknown=0, NotChecked=0, Total=13572 [2020-07-20 01:14:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-07-20 01:14:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2020-07-20 01:14:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-07-20 01:14:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2020-07-20 01:14:15,861 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 391 [2020-07-20 01:14:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:14:15,861 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2020-07-20 01:14:15,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-20 01:14:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2020-07-20 01:14:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-20 01:14:15,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:14:15,864 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:14:16,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-07-20 01:14:16,078 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:14:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:14:16,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1628873638, now seen corresponding path program 55 times [2020-07-20 01:14:16,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:14:16,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295202476] [2020-07-20 01:14:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:14:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-20 01:14:23,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295202476] [2020-07-20 01:14:23,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985115725] [2020-07-20 01:14:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@45caecb0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:23,248 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@45caecb0 issued 2 check-sat command(s) [2020-07-20 01:14:23,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:14:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 114 conjunts are in the unsatisfiable core [2020-07-20 01:14:23,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:14:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-20 01:14:23,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:14:23,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 62 [2020-07-20 01:14:23,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10421702] [2020-07-20 01:14:23,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-20 01:14:23,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:14:23,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-20 01:14:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1718, Invalid=2064, Unknown=0, NotChecked=0, Total=3782 [2020-07-20 01:14:23,483 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand 62 states. [2020-07-20 01:14:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:14:25,161 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2020-07-20 01:14:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-20 01:14:25,162 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 398 [2020-07-20 01:14:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:14:25,164 INFO L225 Difference]: With dead ends: 200 [2020-07-20 01:14:25,164 INFO L226 Difference]: Without dead ends: 196 [2020-07-20 01:14:25,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5195, Invalid=8847, Unknown=0, NotChecked=0, Total=14042 [2020-07-20 01:14:25,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-20 01:14:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-20 01:14:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-20 01:14:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-07-20 01:14:25,172 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 398 [2020-07-20 01:14:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:14:25,172 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-07-20 01:14:25,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-20 01:14:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-07-20 01:14:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-07-20 01:14:25,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:14:25,175 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:14:25,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:25,389 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:14:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:14:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1214763067, now seen corresponding path program 56 times [2020-07-20 01:14:25,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:14:25,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035635546] [2020-07-20 01:14:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:14:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-20 01:14:32,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035635546] [2020-07-20 01:14:32,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785484276] [2020-07-20 01:14:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c2c58fe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:32,796 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c2c58fe issued 2 check-sat command(s) [2020-07-20 01:14:32,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:14:32,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 116 conjunts are in the unsatisfiable core [2020-07-20 01:14:32,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:14:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-20 01:14:33,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:14:33,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2020-07-20 01:14:33,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335758076] [2020-07-20 01:14:33,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-20 01:14:33,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:14:33,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-20 01:14:33,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1777, Invalid=2129, Unknown=0, NotChecked=0, Total=3906 [2020-07-20 01:14:33,075 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 63 states. [2020-07-20 01:14:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:14:34,796 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2020-07-20 01:14:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-20 01:14:34,797 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 405 [2020-07-20 01:14:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:14:34,799 INFO L225 Difference]: With dead ends: 203 [2020-07-20 01:14:34,799 INFO L226 Difference]: Without dead ends: 199 [2020-07-20 01:14:34,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5373, Invalid=9147, Unknown=0, NotChecked=0, Total=14520 [2020-07-20 01:14:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-20 01:14:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-07-20 01:14:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-07-20 01:14:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2020-07-20 01:14:34,807 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 405 [2020-07-20 01:14:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:14:34,807 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2020-07-20 01:14:34,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-20 01:14:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2020-07-20 01:14:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-20 01:14:34,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:14:34,810 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:14:35,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-07-20 01:14:35,026 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:14:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:14:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash -383752764, now seen corresponding path program 57 times [2020-07-20 01:14:35,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:14:35,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328101451] [2020-07-20 01:14:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:14:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-20 01:14:42,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328101451] [2020-07-20 01:14:42,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089709886] [2020-07-20 01:14:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1d81697 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:42,727 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1d81697 issued 2 check-sat command(s) [2020-07-20 01:14:42,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:14:42,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 118 conjunts are in the unsatisfiable core [2020-07-20 01:14:42,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:14:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-20 01:14:42,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:14:42,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 64 [2020-07-20 01:14:42,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267160434] [2020-07-20 01:14:42,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-07-20 01:14:42,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:14:42,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-07-20 01:14:42,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1837, Invalid=2195, Unknown=0, NotChecked=0, Total=4032 [2020-07-20 01:14:42,960 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 64 states. [2020-07-20 01:14:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:14:44,694 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2020-07-20 01:14:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-20 01:14:44,695 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 412 [2020-07-20 01:14:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:14:44,697 INFO L225 Difference]: With dead ends: 206 [2020-07-20 01:14:44,697 INFO L226 Difference]: Without dead ends: 202 [2020-07-20 01:14:44,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5554, Invalid=9452, Unknown=0, NotChecked=0, Total=15006 [2020-07-20 01:14:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-20 01:14:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-07-20 01:14:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-20 01:14:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2020-07-20 01:14:44,705 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 412 [2020-07-20 01:14:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:14:44,705 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2020-07-20 01:14:44,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-07-20 01:14:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2020-07-20 01:14:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-07-20 01:14:44,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:14:44,708 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:14:44,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:44,922 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:14:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:14:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1310199515, now seen corresponding path program 58 times [2020-07-20 01:14:44,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:14:44,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706722072] [2020-07-20 01:14:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:14:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-20 01:14:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706722072] [2020-07-20 01:14:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901005892] [2020-07-20 01:14:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@67a764fb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:14:52,833 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@67a764fb issued 2 check-sat command(s) [2020-07-20 01:14:52,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:14:52,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 120 conjunts are in the unsatisfiable core [2020-07-20 01:14:52,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:14:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-20 01:14:53,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:14:53,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2020-07-20 01:14:53,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154845355] [2020-07-20 01:14:53,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-20 01:14:53,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:14:53,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-20 01:14:53,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1898, Invalid=2262, Unknown=0, NotChecked=0, Total=4160 [2020-07-20 01:14:53,070 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand 65 states. [2020-07-20 01:14:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:14:54,952 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2020-07-20 01:14:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-20 01:14:54,953 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 419 [2020-07-20 01:14:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:14:54,955 INFO L225 Difference]: With dead ends: 209 [2020-07-20 01:14:54,955 INFO L226 Difference]: Without dead ends: 205 [2020-07-20 01:14:54,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5738, Invalid=9762, Unknown=0, NotChecked=0, Total=15500 [2020-07-20 01:14:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-20 01:14:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-20 01:14:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-20 01:14:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2020-07-20 01:14:54,962 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 419 [2020-07-20 01:14:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:14:54,963 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2020-07-20 01:14:54,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-20 01:14:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2020-07-20 01:14:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-07-20 01:14:54,965 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:14:54,966 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:14:55,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-07-20 01:14:55,181 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:14:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:14:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash -783714770, now seen corresponding path program 59 times [2020-07-20 01:14:55,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:14:55,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147465102] [2020-07-20 01:14:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:14:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:14:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-20 01:15:03,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147465102] [2020-07-20 01:15:03,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989601978] [2020-07-20 01:15:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e8ef99 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:03,816 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e8ef99 issued 2 check-sat command(s) [2020-07-20 01:15:03,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:15:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 122 conjunts are in the unsatisfiable core [2020-07-20 01:15:03,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:15:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-20 01:15:04,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:15:04,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 66 [2020-07-20 01:15:04,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095465115] [2020-07-20 01:15:04,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-20 01:15:04,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:15:04,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-20 01:15:04,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1960, Invalid=2330, Unknown=0, NotChecked=0, Total=4290 [2020-07-20 01:15:04,094 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 66 states. [2020-07-20 01:15:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:15:06,034 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2020-07-20 01:15:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-07-20 01:15:06,034 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 426 [2020-07-20 01:15:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:15:06,036 INFO L225 Difference]: With dead ends: 212 [2020-07-20 01:15:06,036 INFO L226 Difference]: Without dead ends: 208 [2020-07-20 01:15:06,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3659 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5925, Invalid=10077, Unknown=0, NotChecked=0, Total=16002 [2020-07-20 01:15:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-20 01:15:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2020-07-20 01:15:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-20 01:15:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2020-07-20 01:15:06,043 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 426 [2020-07-20 01:15:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:15:06,043 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 214 transitions. [2020-07-20 01:15:06,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-20 01:15:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 214 transitions. [2020-07-20 01:15:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-20 01:15:06,046 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:15:06,046 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:15:06,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:06,262 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:15:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:15:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1486211343, now seen corresponding path program 60 times [2020-07-20 01:15:06,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:15:06,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234840024] [2020-07-20 01:15:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:15:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-20 01:15:15,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234840024] [2020-07-20 01:15:15,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449111537] [2020-07-20 01:15:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@454cbf8a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:15,186 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@454cbf8a issued 2 check-sat command(s) [2020-07-20 01:15:15,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:15:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 124 conjunts are in the unsatisfiable core [2020-07-20 01:15:15,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:15:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-20 01:15:15,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:15:15,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2020-07-20 01:15:15,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268131763] [2020-07-20 01:15:15,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-20 01:15:15,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:15:15,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-20 01:15:15,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2023, Invalid=2399, Unknown=0, NotChecked=0, Total=4422 [2020-07-20 01:15:15,451 INFO L87 Difference]: Start difference. First operand 206 states and 214 transitions. Second operand 67 states. [2020-07-20 01:15:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:15:17,424 INFO L93 Difference]: Finished difference Result 215 states and 225 transitions. [2020-07-20 01:15:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-20 01:15:17,425 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 433 [2020-07-20 01:15:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:15:17,427 INFO L225 Difference]: With dead ends: 215 [2020-07-20 01:15:17,427 INFO L226 Difference]: Without dead ends: 211 [2020-07-20 01:15:17,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3781 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6115, Invalid=10397, Unknown=0, NotChecked=0, Total=16512 [2020-07-20 01:15:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-20 01:15:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-07-20 01:15:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-07-20 01:15:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 217 transitions. [2020-07-20 01:15:17,434 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 217 transitions. Word has length 433 [2020-07-20 01:15:17,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:15:17,434 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 217 transitions. [2020-07-20 01:15:17,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-20 01:15:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 217 transitions. [2020-07-20 01:15:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-07-20 01:15:17,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:15:17,438 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:15:17,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-07-20 01:15:17,652 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:15:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:15:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1191973480, now seen corresponding path program 61 times [2020-07-20 01:15:17,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:15:17,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544081008] [2020-07-20 01:15:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:15:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-20 01:15:26,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544081008] [2020-07-20 01:15:26,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319645590] [2020-07-20 01:15:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d875157 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:26,996 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d875157 issued 2 check-sat command(s) [2020-07-20 01:15:26,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:15:27,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 126 conjunts are in the unsatisfiable core [2020-07-20 01:15:27,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:15:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-20 01:15:27,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:15:27,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 68 [2020-07-20 01:15:27,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295951803] [2020-07-20 01:15:27,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-20 01:15:27,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:15:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-20 01:15:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2087, Invalid=2469, Unknown=0, NotChecked=0, Total=4556 [2020-07-20 01:15:27,247 INFO L87 Difference]: Start difference. First operand 209 states and 217 transitions. Second operand 68 states. [2020-07-20 01:15:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:15:29,231 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2020-07-20 01:15:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-20 01:15:29,232 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 440 [2020-07-20 01:15:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:15:29,234 INFO L225 Difference]: With dead ends: 218 [2020-07-20 01:15:29,234 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 01:15:29,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3905 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6308, Invalid=10722, Unknown=0, NotChecked=0, Total=17030 [2020-07-20 01:15:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 01:15:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-20 01:15:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-20 01:15:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2020-07-20 01:15:29,242 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 440 [2020-07-20 01:15:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:15:29,242 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2020-07-20 01:15:29,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-20 01:15:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2020-07-20 01:15:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-20 01:15:29,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:15:29,246 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:15:29,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:29,459 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:15:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:15:29,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1349564409, now seen corresponding path program 62 times [2020-07-20 01:15:29,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:15:29,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853600361] [2020-07-20 01:15:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:15:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-20 01:15:39,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853600361] [2020-07-20 01:15:39,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717784498] [2020-07-20 01:15:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@556bfa89 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:39,451 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@556bfa89 issued 2 check-sat command(s) [2020-07-20 01:15:39,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:15:39,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 128 conjunts are in the unsatisfiable core [2020-07-20 01:15:39,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:15:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-20 01:15:39,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:15:39,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2020-07-20 01:15:39,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997217776] [2020-07-20 01:15:39,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-20 01:15:39,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:15:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-20 01:15:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2152, Invalid=2540, Unknown=0, NotChecked=0, Total=4692 [2020-07-20 01:15:39,717 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand 69 states. [2020-07-20 01:15:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:15:41,864 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2020-07-20 01:15:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-20 01:15:41,865 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 447 [2020-07-20 01:15:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:15:41,867 INFO L225 Difference]: With dead ends: 221 [2020-07-20 01:15:41,867 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 01:15:41,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6504, Invalid=11052, Unknown=0, NotChecked=0, Total=17556 [2020-07-20 01:15:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 01:15:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-07-20 01:15:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-20 01:15:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 223 transitions. [2020-07-20 01:15:41,884 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 223 transitions. Word has length 447 [2020-07-20 01:15:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:15:41,885 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 223 transitions. [2020-07-20 01:15:41,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-20 01:15:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 223 transitions. [2020-07-20 01:15:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-07-20 01:15:41,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:15:41,889 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:15:42,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-07-20 01:15:42,104 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:15:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:15:42,105 INFO L82 PathProgramCache]: Analyzing trace with hash 252652546, now seen corresponding path program 63 times [2020-07-20 01:15:42,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:15:42,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713895746] [2020-07-20 01:15:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:15:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-20 01:15:52,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713895746] [2020-07-20 01:15:52,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694976583] [2020-07-20 01:15:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@514ce04d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:52,291 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@514ce04d issued 2 check-sat command(s) [2020-07-20 01:15:52,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:15:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 130 conjunts are in the unsatisfiable core [2020-07-20 01:15:52,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:15:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-20 01:15:52,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:15:52,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2020-07-20 01:15:52,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304623542] [2020-07-20 01:15:52,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-07-20 01:15:52,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:15:52,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-07-20 01:15:52,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2218, Invalid=2612, Unknown=0, NotChecked=0, Total=4830 [2020-07-20 01:15:52,638 INFO L87 Difference]: Start difference. First operand 215 states and 223 transitions. Second operand 70 states. [2020-07-20 01:15:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:15:54,802 INFO L93 Difference]: Finished difference Result 224 states and 234 transitions. [2020-07-20 01:15:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-20 01:15:54,803 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 454 [2020-07-20 01:15:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:15:54,804 INFO L225 Difference]: With dead ends: 224 [2020-07-20 01:15:54,804 INFO L226 Difference]: Without dead ends: 220 [2020-07-20 01:15:54,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6703, Invalid=11387, Unknown=0, NotChecked=0, Total=18090 [2020-07-20 01:15:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-20 01:15:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2020-07-20 01:15:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-20 01:15:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-07-20 01:15:54,812 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 454 [2020-07-20 01:15:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:15:54,813 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-07-20 01:15:54,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-07-20 01:15:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-07-20 01:15:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-20 01:15:54,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:15:54,816 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:15:55,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:15:55,032 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:15:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:15:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1411899933, now seen corresponding path program 64 times [2020-07-20 01:15:55,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:15:55,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461120488] [2020-07-20 01:15:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:15:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:15:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-20 01:16:05,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461120488] [2020-07-20 01:16:05,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168999247] [2020-07-20 01:16:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60f09d4c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:16:05,438 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60f09d4c issued 2 check-sat command(s) [2020-07-20 01:16:05,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:16:05,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 132 conjunts are in the unsatisfiable core [2020-07-20 01:16:05,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:16:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-20 01:16:05,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:16:05,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2020-07-20 01:16:05,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112765336] [2020-07-20 01:16:05,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-20 01:16:05,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:16:05,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-20 01:16:05,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2285, Invalid=2685, Unknown=0, NotChecked=0, Total=4970 [2020-07-20 01:16:05,725 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 71 states. [2020-07-20 01:16:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:16:08,065 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2020-07-20 01:16:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-20 01:16:08,066 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 461 [2020-07-20 01:16:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:16:08,068 INFO L225 Difference]: With dead ends: 227 [2020-07-20 01:16:08,068 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 01:16:08,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6905, Invalid=11727, Unknown=0, NotChecked=0, Total=18632 [2020-07-20 01:16:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 01:16:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-20 01:16:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-20 01:16:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2020-07-20 01:16:08,077 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 461 [2020-07-20 01:16:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:16:08,077 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2020-07-20 01:16:08,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-20 01:16:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2020-07-20 01:16:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-07-20 01:16:08,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:16:08,081 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:16:08,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-07-20 01:16:08,296 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:16:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:16:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1911198060, now seen corresponding path program 65 times [2020-07-20 01:16:08,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:16:08,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986562807] [2020-07-20 01:16:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:16:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-20 01:16:19,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986562807] [2020-07-20 01:16:19,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887037926] [2020-07-20 01:16:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d30a990 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:16:19,333 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d30a990 issued 2 check-sat command(s) [2020-07-20 01:16:19,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:16:19,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 134 conjunts are in the unsatisfiable core [2020-07-20 01:16:19,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:16:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-20 01:16:19,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:16:19,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2020-07-20 01:16:19,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864986941] [2020-07-20 01:16:19,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-07-20 01:16:19,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:16:19,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-07-20 01:16:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=2759, Unknown=0, NotChecked=0, Total=5112 [2020-07-20 01:16:19,614 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand 72 states. [2020-07-20 01:16:21,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:16:21,958 INFO L93 Difference]: Finished difference Result 230 states and 240 transitions. [2020-07-20 01:16:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-07-20 01:16:21,959 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 468 [2020-07-20 01:16:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:16:21,961 INFO L225 Difference]: With dead ends: 230 [2020-07-20 01:16:21,961 INFO L226 Difference]: Without dead ends: 226 [2020-07-20 01:16:21,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4421 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7110, Invalid=12072, Unknown=0, NotChecked=0, Total=19182 [2020-07-20 01:16:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-20 01:16:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2020-07-20 01:16:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-20 01:16:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 232 transitions. [2020-07-20 01:16:21,970 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 232 transitions. Word has length 468 [2020-07-20 01:16:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:16:21,970 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 232 transitions. [2020-07-20 01:16:21,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-07-20 01:16:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 232 transitions. [2020-07-20 01:16:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-07-20 01:16:21,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:16:21,974 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:16:22,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-07-20 01:16:22,189 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:16:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:16:22,189 INFO L82 PathProgramCache]: Analyzing trace with hash -495672013, now seen corresponding path program 66 times [2020-07-20 01:16:22,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:16:22,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73497475] [2020-07-20 01:16:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:16:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-20 01:16:33,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73497475] [2020-07-20 01:16:33,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445524658] [2020-07-20 01:16:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@680f3850 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:16:33,472 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@680f3850 issued 2 check-sat command(s) [2020-07-20 01:16:33,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:16:33,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 136 conjunts are in the unsatisfiable core [2020-07-20 01:16:33,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:16:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-20 01:16:33,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:16:33,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2020-07-20 01:16:33,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567946368] [2020-07-20 01:16:33,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-20 01:16:33,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:16:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-20 01:16:33,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2422, Invalid=2834, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 01:16:33,764 INFO L87 Difference]: Start difference. First operand 224 states and 232 transitions. Second operand 73 states. [2020-07-20 01:16:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:16:36,119 INFO L93 Difference]: Finished difference Result 233 states and 243 transitions. [2020-07-20 01:16:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-20 01:16:36,120 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 475 [2020-07-20 01:16:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:16:36,122 INFO L225 Difference]: With dead ends: 233 [2020-07-20 01:16:36,122 INFO L226 Difference]: Without dead ends: 229 [2020-07-20 01:16:36,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7318, Invalid=12422, Unknown=0, NotChecked=0, Total=19740 [2020-07-20 01:16:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-20 01:16:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-07-20 01:16:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-20 01:16:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2020-07-20 01:16:36,129 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 475 [2020-07-20 01:16:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:16:36,129 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2020-07-20 01:16:36,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-20 01:16:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2020-07-20 01:16:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-07-20 01:16:36,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:16:36,131 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:16:36,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-07-20 01:16:36,332 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:16:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:16:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash -785023530, now seen corresponding path program 67 times [2020-07-20 01:16:36,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:16:36,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351471671] [2020-07-20 01:16:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:16:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-20 01:16:47,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351471671] [2020-07-20 01:16:47,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440357204] [2020-07-20 01:16:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20384f0a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:16:48,072 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20384f0a issued 2 check-sat command(s) [2020-07-20 01:16:48,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:16:48,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 138 conjunts are in the unsatisfiable core [2020-07-20 01:16:48,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:16:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-20 01:16:48,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:16:48,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 74 [2020-07-20 01:16:48,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196868326] [2020-07-20 01:16:48,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-20 01:16:48,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:16:48,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-20 01:16:48,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2492, Invalid=2910, Unknown=0, NotChecked=0, Total=5402 [2020-07-20 01:16:48,374 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 74 states. [2020-07-20 01:16:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:16:50,801 INFO L93 Difference]: Finished difference Result 236 states and 246 transitions. [2020-07-20 01:16:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-20 01:16:50,802 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 482 [2020-07-20 01:16:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:16:50,804 INFO L225 Difference]: With dead ends: 236 [2020-07-20 01:16:50,804 INFO L226 Difference]: Without dead ends: 232 [2020-07-20 01:16:50,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4691 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7529, Invalid=12777, Unknown=0, NotChecked=0, Total=20306 [2020-07-20 01:16:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-20 01:16:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-20 01:16:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-20 01:16:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2020-07-20 01:16:50,811 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 482 [2020-07-20 01:16:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:16:50,812 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 238 transitions. [2020-07-20 01:16:50,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-20 01:16:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 238 transitions. [2020-07-20 01:16:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-20 01:16:50,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:16:50,815 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:16:51,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:16:51,016 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:16:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:16:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1700147529, now seen corresponding path program 68 times [2020-07-20 01:16:51,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:16:51,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252478270] [2020-07-20 01:16:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:16:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:16:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-20 01:17:02,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252478270] [2020-07-20 01:17:02,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376090279] [2020-07-20 01:17:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4155f5a8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:17:03,070 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4155f5a8 issued 2 check-sat command(s) [2020-07-20 01:17:03,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:17:03,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 140 conjunts are in the unsatisfiable core [2020-07-20 01:17:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:17:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-20 01:17:03,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:17:03,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2020-07-20 01:17:03,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077658593] [2020-07-20 01:17:03,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-20 01:17:03,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:17:03,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-20 01:17:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2563, Invalid=2987, Unknown=0, NotChecked=0, Total=5550 [2020-07-20 01:17:03,456 INFO L87 Difference]: Start difference. First operand 230 states and 238 transitions. Second operand 75 states. [2020-07-20 01:17:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:17:05,999 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2020-07-20 01:17:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-20 01:17:06,000 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 489 [2020-07-20 01:17:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:17:06,002 INFO L225 Difference]: With dead ends: 239 [2020-07-20 01:17:06,002 INFO L226 Difference]: Without dead ends: 235 [2020-07-20 01:17:06,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7743, Invalid=13137, Unknown=0, NotChecked=0, Total=20880 [2020-07-20 01:17:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-20 01:17:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2020-07-20 01:17:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-07-20 01:17:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 241 transitions. [2020-07-20 01:17:06,007 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 241 transitions. Word has length 489 [2020-07-20 01:17:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:17:06,008 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 241 transitions. [2020-07-20 01:17:06,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-20 01:17:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 241 transitions. [2020-07-20 01:17:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-07-20 01:17:06,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:17:06,011 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:17:06,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-07-20 01:17:06,212 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:17:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:17:06,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1879092928, now seen corresponding path program 69 times [2020-07-20 01:17:06,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:17:06,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344219597] [2020-07-20 01:17:06,214 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:17:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-20 01:17:18,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344219597] [2020-07-20 01:17:18,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907083572] [2020-07-20 01:17:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52982861 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:17:18,920 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52982861 issued 2 check-sat command(s) [2020-07-20 01:17:18,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:17:18,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 142 conjunts are in the unsatisfiable core [2020-07-20 01:17:18,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:17:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-20 01:17:19,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:17:19,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 76 [2020-07-20 01:17:19,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197925932] [2020-07-20 01:17:19,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-20 01:17:19,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:17:19,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-20 01:17:19,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2635, Invalid=3065, Unknown=0, NotChecked=0, Total=5700 [2020-07-20 01:17:19,230 INFO L87 Difference]: Start difference. First operand 233 states and 241 transitions. Second operand 76 states. [2020-07-20 01:17:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:17:21,802 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2020-07-20 01:17:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-20 01:17:21,803 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 496 [2020-07-20 01:17:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:17:21,805 INFO L225 Difference]: With dead ends: 242 [2020-07-20 01:17:21,805 INFO L226 Difference]: Without dead ends: 238 [2020-07-20 01:17:21,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7960, Invalid=13502, Unknown=0, NotChecked=0, Total=21462 [2020-07-20 01:17:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-20 01:17:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-07-20 01:17:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-20 01:17:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 244 transitions. [2020-07-20 01:17:21,812 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 244 transitions. Word has length 496 [2020-07-20 01:17:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:17:21,812 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 244 transitions. [2020-07-20 01:17:21,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-20 01:17:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 244 transitions. [2020-07-20 01:17:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-20 01:17:21,815 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:17:21,816 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:17:22,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:17:22,017 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:17:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:17:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 55387743, now seen corresponding path program 70 times [2020-07-20 01:17:22,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:17:22,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809950735] [2020-07-20 01:17:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:17:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-20 01:17:35,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809950735] [2020-07-20 01:17:35,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527075743] [2020-07-20 01:17:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@297f92a6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:17:35,403 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@297f92a6 issued 2 check-sat command(s) [2020-07-20 01:17:35,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:17:35,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 144 conjunts are in the unsatisfiable core [2020-07-20 01:17:35,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:17:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-20 01:17:35,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:17:35,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2020-07-20 01:17:35,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891359349] [2020-07-20 01:17:35,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-20 01:17:35,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:17:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-20 01:17:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2708, Invalid=3144, Unknown=0, NotChecked=0, Total=5852 [2020-07-20 01:17:35,984 INFO L87 Difference]: Start difference. First operand 236 states and 244 transitions. Second operand 77 states. [2020-07-20 01:17:38,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:17:38,577 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2020-07-20 01:17:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-20 01:17:38,578 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 503 [2020-07-20 01:17:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:17:38,580 INFO L225 Difference]: With dead ends: 245 [2020-07-20 01:17:38,581 INFO L226 Difference]: Without dead ends: 241 [2020-07-20 01:17:38,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5111 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8180, Invalid=13872, Unknown=0, NotChecked=0, Total=22052 [2020-07-20 01:17:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-20 01:17:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-20 01:17:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-20 01:17:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 247 transitions. [2020-07-20 01:17:38,587 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 247 transitions. Word has length 503 [2020-07-20 01:17:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:17:38,588 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 247 transitions. [2020-07-20 01:17:38,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-20 01:17:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 247 transitions. [2020-07-20 01:17:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-07-20 01:17:38,590 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:17:38,591 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:17:38,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2020-07-20 01:17:38,792 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:17:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:17:38,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1497928790, now seen corresponding path program 71 times [2020-07-20 01:17:38,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:17:38,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795684658] [2020-07-20 01:17:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:17:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-20 01:17:52,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795684658] [2020-07-20 01:17:52,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153538900] [2020-07-20 01:17:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7237f500 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:17:52,402 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7237f500 issued 2 check-sat command(s) [2020-07-20 01:17:52,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:17:52,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 146 conjunts are in the unsatisfiable core [2020-07-20 01:17:52,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:17:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-20 01:17:52,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:17:52,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 78 [2020-07-20 01:17:52,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728255049] [2020-07-20 01:17:52,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-07-20 01:17:52,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:17:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-07-20 01:17:52,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2782, Invalid=3224, Unknown=0, NotChecked=0, Total=6006 [2020-07-20 01:17:52,726 INFO L87 Difference]: Start difference. First operand 239 states and 247 transitions. Second operand 78 states. [2020-07-20 01:17:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:17:55,489 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2020-07-20 01:17:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-20 01:17:55,490 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 510 [2020-07-20 01:17:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:17:55,492 INFO L225 Difference]: With dead ends: 248 [2020-07-20 01:17:55,492 INFO L226 Difference]: Without dead ends: 244 [2020-07-20 01:17:55,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5255 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8403, Invalid=14247, Unknown=0, NotChecked=0, Total=22650 [2020-07-20 01:17:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-20 01:17:55,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-07-20 01:17:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-07-20 01:17:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-07-20 01:17:55,501 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 510 [2020-07-20 01:17:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:17:55,501 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-07-20 01:17:55,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-07-20 01:17:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-07-20 01:17:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-07-20 01:17:55,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:17:55,505 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:17:55,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:17:55,706 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:17:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:17:55,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1551508597, now seen corresponding path program 72 times [2020-07-20 01:17:55,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:17:55,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978126537] [2020-07-20 01:17:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:17:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:17:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-20 01:18:09,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978126537] [2020-07-20 01:18:09,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598277351] [2020-07-20 01:18:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74bb0124 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:18:09,935 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74bb0124 issued 2 check-sat command(s) [2020-07-20 01:18:09,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:18:09,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 148 conjunts are in the unsatisfiable core [2020-07-20 01:18:09,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:18:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-20 01:18:10,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:18:10,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2020-07-20 01:18:10,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927992580] [2020-07-20 01:18:10,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-20 01:18:10,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:18:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-20 01:18:10,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2857, Invalid=3305, Unknown=0, NotChecked=0, Total=6162 [2020-07-20 01:18:10,264 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 79 states. [2020-07-20 01:18:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:18:13,129 INFO L93 Difference]: Finished difference Result 251 states and 261 transitions. [2020-07-20 01:18:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-20 01:18:13,130 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 517 [2020-07-20 01:18:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:18:13,132 INFO L225 Difference]: With dead ends: 251 [2020-07-20 01:18:13,132 INFO L226 Difference]: Without dead ends: 247 [2020-07-20 01:18:13,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5401 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=8629, Invalid=14627, Unknown=0, NotChecked=0, Total=23256 [2020-07-20 01:18:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-07-20 01:18:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-07-20 01:18:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-20 01:18:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions. [2020-07-20 01:18:13,140 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 517 [2020-07-20 01:18:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:18:13,140 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 253 transitions. [2020-07-20 01:18:13,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-20 01:18:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 253 transitions. [2020-07-20 01:18:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-20 01:18:13,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:18:13,143 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:18:13,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:18:13,346 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:18:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:18:13,347 INFO L82 PathProgramCache]: Analyzing trace with hash -986895084, now seen corresponding path program 73 times [2020-07-20 01:18:13,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:18:13,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810583791] [2020-07-20 01:18:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:18:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-20 01:18:28,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810583791] [2020-07-20 01:18:28,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980362849] [2020-07-20 01:18:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68456325 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:18:28,271 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68456325 issued 2 check-sat command(s) [2020-07-20 01:18:28,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:18:28,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 150 conjunts are in the unsatisfiable core [2020-07-20 01:18:28,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:18:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-20 01:18:28,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:18:28,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 80 [2020-07-20 01:18:28,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880551139] [2020-07-20 01:18:28,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-20 01:18:28,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:18:28,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-20 01:18:28,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2933, Invalid=3387, Unknown=0, NotChecked=0, Total=6320 [2020-07-20 01:18:28,622 INFO L87 Difference]: Start difference. First operand 245 states and 253 transitions. Second operand 80 states. [2020-07-20 01:18:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:18:31,622 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2020-07-20 01:18:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-20 01:18:31,623 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 524 [2020-07-20 01:18:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:18:31,625 INFO L225 Difference]: With dead ends: 254 [2020-07-20 01:18:31,625 INFO L226 Difference]: Without dead ends: 250 [2020-07-20 01:18:31,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=8858, Invalid=15012, Unknown=0, NotChecked=0, Total=23870 [2020-07-20 01:18:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-20 01:18:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-20 01:18:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-20 01:18:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 256 transitions. [2020-07-20 01:18:31,638 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 256 transitions. Word has length 524 [2020-07-20 01:18:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:18:31,638 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 256 transitions. [2020-07-20 01:18:31,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-20 01:18:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 256 transitions. [2020-07-20 01:18:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-07-20 01:18:31,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:18:31,642 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:18:31,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:18:31,857 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:18:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:18:31,858 INFO L82 PathProgramCache]: Analyzing trace with hash -392311925, now seen corresponding path program 74 times [2020-07-20 01:18:31,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:18:31,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659258810] [2020-07-20 01:18:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:18:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-20 01:18:47,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659258810] [2020-07-20 01:18:47,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756994078] [2020-07-20 01:18:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60f40189 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:18:47,191 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60f40189 issued 2 check-sat command(s) [2020-07-20 01:18:47,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:18:47,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 152 conjunts are in the unsatisfiable core [2020-07-20 01:18:47,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:18:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-20 01:18:47,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:18:47,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2020-07-20 01:18:47,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175851164] [2020-07-20 01:18:47,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-20 01:18:47,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:18:47,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-20 01:18:47,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3010, Invalid=3470, Unknown=0, NotChecked=0, Total=6480 [2020-07-20 01:18:47,535 INFO L87 Difference]: Start difference. First operand 248 states and 256 transitions. Second operand 81 states. [2020-07-20 01:18:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:18:50,593 INFO L93 Difference]: Finished difference Result 257 states and 267 transitions. [2020-07-20 01:18:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-20 01:18:50,594 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 531 [2020-07-20 01:18:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:18:50,596 INFO L225 Difference]: With dead ends: 257 [2020-07-20 01:18:50,596 INFO L226 Difference]: Without dead ends: 253 [2020-07-20 01:18:50,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5699 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9090, Invalid=15402, Unknown=0, NotChecked=0, Total=24492 [2020-07-20 01:18:50,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-20 01:18:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2020-07-20 01:18:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-07-20 01:18:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2020-07-20 01:18:50,605 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 531 [2020-07-20 01:18:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:18:50,606 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2020-07-20 01:18:50,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-20 01:18:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2020-07-20 01:18:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-07-20 01:18:50,609 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:18:50,609 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:18:50,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-07-20 01:18:50,823 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:18:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:18:50,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1955591550, now seen corresponding path program 75 times [2020-07-20 01:18:50,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:18:50,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461084942] [2020-07-20 01:18:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:18:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:18:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-20 01:19:06,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461084942] [2020-07-20 01:19:06,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182616788] [2020-07-20 01:19:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ec337f9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:19:06,721 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ec337f9 issued 2 check-sat command(s) [2020-07-20 01:19:06,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:19:06,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 154 conjunts are in the unsatisfiable core [2020-07-20 01:19:06,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:19:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-20 01:19:07,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:19:07,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 82 [2020-07-20 01:19:07,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331352802] [2020-07-20 01:19:07,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-07-20 01:19:07,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:19:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-07-20 01:19:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3088, Invalid=3554, Unknown=0, NotChecked=0, Total=6642 [2020-07-20 01:19:07,066 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand 82 states. [2020-07-20 01:19:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:19:10,311 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2020-07-20 01:19:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-20 01:19:10,312 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 538 [2020-07-20 01:19:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:19:10,315 INFO L225 Difference]: With dead ends: 260 [2020-07-20 01:19:10,315 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 01:19:10,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5851 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=9325, Invalid=15797, Unknown=0, NotChecked=0, Total=25122 [2020-07-20 01:19:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 01:19:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2020-07-20 01:19:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-20 01:19:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 262 transitions. [2020-07-20 01:19:10,322 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 262 transitions. Word has length 538 [2020-07-20 01:19:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:19:10,322 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 262 transitions. [2020-07-20 01:19:10,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-07-20 01:19:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 262 transitions. [2020-07-20 01:19:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-07-20 01:19:10,325 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:19:10,325 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:19:10,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:19:10,526 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:19:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:19:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1427684257, now seen corresponding path program 76 times [2020-07-20 01:19:10,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:19:10,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823169895] [2020-07-20 01:19:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:19:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-20 01:19:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823169895] [2020-07-20 01:19:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573523100] [2020-07-20 01:19:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@435615f7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:19:27,138 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@435615f7 issued 2 check-sat command(s) [2020-07-20 01:19:27,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:19:27,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 156 conjunts are in the unsatisfiable core [2020-07-20 01:19:27,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:19:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-20 01:19:27,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:19:27,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2020-07-20 01:19:27,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976775562] [2020-07-20 01:19:27,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-20 01:19:27,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:19:27,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-20 01:19:27,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3167, Invalid=3639, Unknown=0, NotChecked=0, Total=6806 [2020-07-20 01:19:27,499 INFO L87 Difference]: Start difference. First operand 254 states and 262 transitions. Second operand 83 states. [2020-07-20 01:19:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:19:30,727 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2020-07-20 01:19:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-20 01:19:30,728 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 545 [2020-07-20 01:19:30,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:19:30,730 INFO L225 Difference]: With dead ends: 263 [2020-07-20 01:19:30,730 INFO L226 Difference]: Without dead ends: 259 [2020-07-20 01:19:30,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6005 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=9563, Invalid=16197, Unknown=0, NotChecked=0, Total=25760 [2020-07-20 01:19:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-20 01:19:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-20 01:19:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-20 01:19:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2020-07-20 01:19:30,737 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 545 [2020-07-20 01:19:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:19:30,741 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 265 transitions. [2020-07-20 01:19:30,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-20 01:19:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 265 transitions. [2020-07-20 01:19:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-07-20 01:19:30,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:19:30,745 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:19:30,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:19:30,946 INFO L427 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:19:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:19:30,947 INFO L82 PathProgramCache]: Analyzing trace with hash 963585256, now seen corresponding path program 77 times [2020-07-20 01:19:30,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:19:30,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058461693] [2020-07-20 01:19:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:19:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-20 01:19:47,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058461693] [2020-07-20 01:19:47,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368764125] [2020-07-20 01:19:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@37df9b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:19:47,936 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@37df9b issued 2 check-sat command(s) [2020-07-20 01:19:47,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:19:47,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 158 conjunts are in the unsatisfiable core [2020-07-20 01:19:47,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:19:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-20 01:19:48,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:19:48,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 84 [2020-07-20 01:19:48,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486240989] [2020-07-20 01:19:48,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-07-20 01:19:48,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:19:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-07-20 01:19:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3247, Invalid=3725, Unknown=0, NotChecked=0, Total=6972 [2020-07-20 01:19:48,310 INFO L87 Difference]: Start difference. First operand 257 states and 265 transitions. Second operand 84 states. [2020-07-20 01:19:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:19:51,500 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2020-07-20 01:19:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-07-20 01:19:51,501 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 552 [2020-07-20 01:19:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:19:51,503 INFO L225 Difference]: With dead ends: 266 [2020-07-20 01:19:51,503 INFO L226 Difference]: Without dead ends: 262 [2020-07-20 01:19:51,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9804, Invalid=16602, Unknown=0, NotChecked=0, Total=26406 [2020-07-20 01:19:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-07-20 01:19:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-07-20 01:19:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-20 01:19:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 268 transitions. [2020-07-20 01:19:51,512 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 268 transitions. Word has length 552 [2020-07-20 01:19:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:19:51,513 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 268 transitions. [2020-07-20 01:19:51,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-07-20 01:19:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 268 transitions. [2020-07-20 01:19:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-07-20 01:19:51,516 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:19:51,517 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:19:51,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-07-20 01:19:51,732 INFO L427 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:19:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:19:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash -487877449, now seen corresponding path program 78 times [2020-07-20 01:19:51,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:19:51,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18049645] [2020-07-20 01:19:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:19:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:19:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-20 01:20:09,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18049645] [2020-07-20 01:20:09,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967504160] [2020-07-20 01:20:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fe22080 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:20:09,439 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fe22080 issued 2 check-sat command(s) [2020-07-20 01:20:09,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:20:09,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 160 conjunts are in the unsatisfiable core [2020-07-20 01:20:09,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:20:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-20 01:20:09,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:20:09,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2020-07-20 01:20:09,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885058917] [2020-07-20 01:20:09,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-20 01:20:09,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:20:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-20 01:20:09,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3328, Invalid=3812, Unknown=0, NotChecked=0, Total=7140 [2020-07-20 01:20:09,815 INFO L87 Difference]: Start difference. First operand 260 states and 268 transitions. Second operand 85 states. [2020-07-20 01:20:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:20:13,169 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2020-07-20 01:20:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-20 01:20:13,170 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 559 [2020-07-20 01:20:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:20:13,173 INFO L225 Difference]: With dead ends: 269 [2020-07-20 01:20:13,173 INFO L226 Difference]: Without dead ends: 265 [2020-07-20 01:20:13,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6319 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=10048, Invalid=17012, Unknown=0, NotChecked=0, Total=27060 [2020-07-20 01:20:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-20 01:20:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2020-07-20 01:20:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-07-20 01:20:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 271 transitions. [2020-07-20 01:20:13,182 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 271 transitions. Word has length 559 [2020-07-20 01:20:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:20:13,183 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 271 transitions. [2020-07-20 01:20:13,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-20 01:20:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 271 transitions. [2020-07-20 01:20:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-07-20 01:20:13,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:20:13,187 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:20:13,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-07-20 01:20:13,399 INFO L427 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:20:13,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:20:13,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1246094510, now seen corresponding path program 79 times [2020-07-20 01:20:13,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:20:13,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910386806] [2020-07-20 01:20:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:20:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-20 01:20:31,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910386806] [2020-07-20 01:20:31,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858758319] [2020-07-20 01:20:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3d59ec7e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:20:31,747 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3d59ec7e issued 2 check-sat command(s) [2020-07-20 01:20:31,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:20:31,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 162 conjunts are in the unsatisfiable core [2020-07-20 01:20:31,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:20:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-20 01:20:32,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:20:32,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 86 [2020-07-20 01:20:32,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82675240] [2020-07-20 01:20:32,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-20 01:20:32,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:20:32,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-20 01:20:32,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3410, Invalid=3900, Unknown=0, NotChecked=0, Total=7310 [2020-07-20 01:20:32,139 INFO L87 Difference]: Start difference. First operand 263 states and 271 transitions. Second operand 86 states. [2020-07-20 01:20:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:20:35,626 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2020-07-20 01:20:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-20 01:20:35,627 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 566 [2020-07-20 01:20:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:20:35,630 INFO L225 Difference]: With dead ends: 272 [2020-07-20 01:20:35,630 INFO L226 Difference]: Without dead ends: 268 [2020-07-20 01:20:35,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=10295, Invalid=17427, Unknown=0, NotChecked=0, Total=27722 [2020-07-20 01:20:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-20 01:20:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-20 01:20:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-20 01:20:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-07-20 01:20:35,638 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 566 [2020-07-20 01:20:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:20:35,638 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-07-20 01:20:35,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-20 01:20:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-07-20 01:20:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-07-20 01:20:35,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:20:35,642 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:20:35,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:20:35,843 INFO L427 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:20:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:20:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash -994642227, now seen corresponding path program 80 times [2020-07-20 01:20:35,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:20:35,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669558378] [2020-07-20 01:20:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:20:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-20 01:20:54,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669558378] [2020-07-20 01:20:54,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410294948] [2020-07-20 01:20:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b34b953 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:20:54,838 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b34b953 issued 2 check-sat command(s) [2020-07-20 01:20:54,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:20:54,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 164 conjunts are in the unsatisfiable core [2020-07-20 01:20:54,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:20:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-20 01:20:55,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:20:55,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2020-07-20 01:20:55,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823610451] [2020-07-20 01:20:55,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-20 01:20:55,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:20:55,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-20 01:20:55,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3493, Invalid=3989, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 01:20:55,239 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 87 states. [2020-07-20 01:20:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:20:58,750 INFO L93 Difference]: Finished difference Result 275 states and 285 transitions. [2020-07-20 01:20:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-20 01:20:58,751 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 573 [2020-07-20 01:20:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:20:58,753 INFO L225 Difference]: With dead ends: 275 [2020-07-20 01:20:58,753 INFO L226 Difference]: Without dead ends: 271 [2020-07-20 01:20:58,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6641 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=10545, Invalid=17847, Unknown=0, NotChecked=0, Total=28392 [2020-07-20 01:20:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-07-20 01:20:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2020-07-20 01:20:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-20 01:20:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2020-07-20 01:20:58,762 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 573 [2020-07-20 01:20:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:20:58,763 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2020-07-20 01:20:58,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-20 01:20:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2020-07-20 01:20:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-07-20 01:20:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:20:58,767 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:20:58,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:20:58,981 INFO L427 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:20:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:20:58,982 INFO L82 PathProgramCache]: Analyzing trace with hash -893372228, now seen corresponding path program 81 times [2020-07-20 01:20:58,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:20:58,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562543531] [2020-07-20 01:20:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:20:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:20:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-20 01:21:18,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562543531] [2020-07-20 01:21:18,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506116776] [2020-07-20 01:21:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30beec48 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:21:19,090 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30beec48 issued 2 check-sat command(s) [2020-07-20 01:21:19,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:21:19,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 166 conjunts are in the unsatisfiable core [2020-07-20 01:21:19,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:21:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-20 01:21:19,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:21:19,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 88 [2020-07-20 01:21:19,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927525560] [2020-07-20 01:21:19,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-07-20 01:21:19,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:21:19,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-07-20 01:21:19,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3577, Invalid=4079, Unknown=0, NotChecked=0, Total=7656 [2020-07-20 01:21:19,485 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 88 states. [2020-07-20 01:21:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:21:23,401 INFO L93 Difference]: Finished difference Result 278 states and 288 transitions. [2020-07-20 01:21:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-07-20 01:21:23,402 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 580 [2020-07-20 01:21:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:21:23,404 INFO L225 Difference]: With dead ends: 278 [2020-07-20 01:21:23,405 INFO L226 Difference]: Without dead ends: 274 [2020-07-20 01:21:23,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6805 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=10798, Invalid=18272, Unknown=0, NotChecked=0, Total=29070 [2020-07-20 01:21:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-20 01:21:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2020-07-20 01:21:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-20 01:21:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 280 transitions. [2020-07-20 01:21:23,413 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 280 transitions. Word has length 580 [2020-07-20 01:21:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:21:23,413 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 280 transitions. [2020-07-20 01:21:23,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-07-20 01:21:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 280 transitions. [2020-07-20 01:21:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-07-20 01:21:23,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:21:23,416 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:21:23,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:21:23,617 INFO L427 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:21:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:21:23,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2092663267, now seen corresponding path program 82 times [2020-07-20 01:21:23,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:21:23,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122910895] [2020-07-20 01:21:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:21:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-20 01:21:44,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122910895] [2020-07-20 01:21:44,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301488005] [2020-07-20 01:21:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@337b0d10 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:21:44,673 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@337b0d10 issued 2 check-sat command(s) [2020-07-20 01:21:44,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:21:44,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 168 conjunts are in the unsatisfiable core [2020-07-20 01:21:44,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:21:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-20 01:21:45,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:21:45,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2020-07-20 01:21:45,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516802304] [2020-07-20 01:21:45,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-20 01:21:45,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:21:45,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-20 01:21:45,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3662, Invalid=4170, Unknown=0, NotChecked=0, Total=7832 [2020-07-20 01:21:45,112 INFO L87 Difference]: Start difference. First operand 272 states and 280 transitions. Second operand 89 states. [2020-07-20 01:21:49,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:21:49,344 INFO L93 Difference]: Finished difference Result 281 states and 291 transitions. [2020-07-20 01:21:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-20 01:21:49,346 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 587 [2020-07-20 01:21:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:21:49,348 INFO L225 Difference]: With dead ends: 281 [2020-07-20 01:21:49,348 INFO L226 Difference]: Without dead ends: 277 [2020-07-20 01:21:49,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=11054, Invalid=18702, Unknown=0, NotChecked=0, Total=29756 [2020-07-20 01:21:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-20 01:21:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-20 01:21:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-20 01:21:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 283 transitions. [2020-07-20 01:21:49,357 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 283 transitions. Word has length 587 [2020-07-20 01:21:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:21:49,357 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 283 transitions. [2020-07-20 01:21:49,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-20 01:21:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 283 transitions. [2020-07-20 01:21:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-07-20 01:21:49,361 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:21:49,362 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:21:49,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:21:49,576 INFO L427 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:21:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:21:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1154425562, now seen corresponding path program 83 times [2020-07-20 01:21:49,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:21:49,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959879948] [2020-07-20 01:21:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:21:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:21:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-20 01:22:11,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959879948] [2020-07-20 01:22:11,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608651131] [2020-07-20 01:22:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@57051ffa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:22:11,211 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@57051ffa issued 2 check-sat command(s) [2020-07-20 01:22:11,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:22:11,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 170 conjunts are in the unsatisfiable core [2020-07-20 01:22:11,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:22:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-20 01:22:11,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:22:11,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 90 [2020-07-20 01:22:11,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991122770] [2020-07-20 01:22:11,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-07-20 01:22:11,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:22:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-07-20 01:22:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3748, Invalid=4262, Unknown=0, NotChecked=0, Total=8010 [2020-07-20 01:22:11,663 INFO L87 Difference]: Start difference. First operand 275 states and 283 transitions. Second operand 90 states. [2020-07-20 01:22:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:22:15,715 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2020-07-20 01:22:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-07-20 01:22:15,716 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 594 [2020-07-20 01:22:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:22:15,719 INFO L225 Difference]: With dead ends: 284 [2020-07-20 01:22:15,719 INFO L226 Difference]: Without dead ends: 280 [2020-07-20 01:22:15,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=11313, Invalid=19137, Unknown=0, NotChecked=0, Total=30450 [2020-07-20 01:22:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-20 01:22:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2020-07-20 01:22:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 01:22:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 286 transitions. [2020-07-20 01:22:15,729 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 286 transitions. Word has length 594 [2020-07-20 01:22:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:22:15,729 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 286 transitions. [2020-07-20 01:22:15,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-07-20 01:22:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 286 transitions. [2020-07-20 01:22:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-07-20 01:22:15,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:22:15,733 INFO L422 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:22:15,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:22:15,934 INFO L427 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:22:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:22:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash 987354617, now seen corresponding path program 84 times [2020-07-20 01:22:15,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:22:15,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644515383] [2020-07-20 01:22:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:22:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-20 01:22:38,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644515383] [2020-07-20 01:22:38,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598809679] [2020-07-20 01:22:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1caa1e1e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:22:38,593 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1caa1e1e issued 2 check-sat command(s) [2020-07-20 01:22:38,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:22:38,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 172 conjunts are in the unsatisfiable core [2020-07-20 01:22:38,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:22:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-20 01:22:39,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:22:39,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2020-07-20 01:22:39,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284188822] [2020-07-20 01:22:39,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-20 01:22:39,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:22:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-20 01:22:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3835, Invalid=4355, Unknown=0, NotChecked=0, Total=8190 [2020-07-20 01:22:39,049 INFO L87 Difference]: Start difference. First operand 278 states and 286 transitions. Second operand 91 states. [2020-07-20 01:22:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:22:43,379 INFO L93 Difference]: Finished difference Result 287 states and 297 transitions. [2020-07-20 01:22:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-20 01:22:43,380 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 601 [2020-07-20 01:22:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:22:43,383 INFO L225 Difference]: With dead ends: 287 [2020-07-20 01:22:43,383 INFO L226 Difference]: Without dead ends: 283 [2020-07-20 01:22:43,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=11575, Invalid=19577, Unknown=0, NotChecked=0, Total=31152 [2020-07-20 01:22:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-07-20 01:22:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2020-07-20 01:22:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-07-20 01:22:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 289 transitions. [2020-07-20 01:22:43,394 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 289 transitions. Word has length 601 [2020-07-20 01:22:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:22:43,395 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 289 transitions. [2020-07-20 01:22:43,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-20 01:22:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 289 transitions. [2020-07-20 01:22:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-07-20 01:22:43,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:22:43,400 INFO L422 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:22:43,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-07-20 01:22:43,615 INFO L427 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:22:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:22:43,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1293641872, now seen corresponding path program 85 times [2020-07-20 01:22:43,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:22:43,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738217745] [2020-07-20 01:22:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:22:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:22:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-20 01:23:07,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738217745] [2020-07-20 01:23:07,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840444790] [2020-07-20 01:23:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4f871267 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:23:07,649 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4f871267 issued 2 check-sat command(s) [2020-07-20 01:23:07,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:23:07,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 174 conjunts are in the unsatisfiable core [2020-07-20 01:23:07,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:23:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-20 01:23:08,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:23:08,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 92 [2020-07-20 01:23:08,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461530584] [2020-07-20 01:23:08,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-07-20 01:23:08,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:23:08,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-07-20 01:23:08,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3923, Invalid=4449, Unknown=0, NotChecked=0, Total=8372 [2020-07-20 01:23:08,131 INFO L87 Difference]: Start difference. First operand 281 states and 289 transitions. Second operand 92 states. [2020-07-20 01:23:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:23:12,584 INFO L93 Difference]: Finished difference Result 290 states and 300 transitions. [2020-07-20 01:23:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-07-20 01:23:12,586 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 608 [2020-07-20 01:23:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:23:12,588 INFO L225 Difference]: With dead ends: 290 [2020-07-20 01:23:12,588 INFO L226 Difference]: Without dead ends: 286 [2020-07-20 01:23:12,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7481 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=11840, Invalid=20022, Unknown=0, NotChecked=0, Total=31862 [2020-07-20 01:23:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-20 01:23:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-20 01:23:12,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-20 01:23:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 292 transitions. [2020-07-20 01:23:12,598 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 292 transitions. Word has length 608 [2020-07-20 01:23:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:23:12,598 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 292 transitions. [2020-07-20 01:23:12,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-07-20 01:23:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 292 transitions. [2020-07-20 01:23:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-07-20 01:23:12,603 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:23:12,603 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:23:12,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:23:12,804 INFO L427 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:23:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:23:12,805 INFO L82 PathProgramCache]: Analyzing trace with hash 982684431, now seen corresponding path program 86 times [2020-07-20 01:23:12,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:23:12,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400566795] [2020-07-20 01:23:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:23:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25929 backedges. 0 proven. 11137 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2020-07-20 01:23:38,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400566795] [2020-07-20 01:23:38,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415774868] [2020-07-20 01:23:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@222a4f35 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:23:38,410 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@222a4f35 issued 2 check-sat command(s) [2020-07-20 01:23:38,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:23:38,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 176 conjunts are in the unsatisfiable core [2020-07-20 01:23:38,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:23:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 25929 backedges. 0 proven. 11137 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2020-07-20 01:23:38,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:23:38,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2020-07-20 01:23:38,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141309798] [2020-07-20 01:23:38,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-07-20 01:23:38,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:23:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-07-20 01:23:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4012, Invalid=4544, Unknown=0, NotChecked=0, Total=8556 [2020-07-20 01:23:38,904 INFO L87 Difference]: Start difference. First operand 284 states and 292 transitions. Second operand 93 states. [2020-07-20 01:23:43,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:23:43,443 INFO L93 Difference]: Finished difference Result 293 states and 303 transitions. [2020-07-20 01:23:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-07-20 01:23:43,444 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 615 [2020-07-20 01:23:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:23:43,446 INFO L225 Difference]: With dead ends: 293 [2020-07-20 01:23:43,446 INFO L226 Difference]: Without dead ends: 289 [2020-07-20 01:23:43,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7655 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=12108, Invalid=20472, Unknown=0, NotChecked=0, Total=32580 [2020-07-20 01:23:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-20 01:23:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-07-20 01:23:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-07-20 01:23:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 295 transitions. [2020-07-20 01:23:43,455 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 295 transitions. Word has length 615 [2020-07-20 01:23:43,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:23:43,455 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 295 transitions. [2020-07-20 01:23:43,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-07-20 01:23:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 295 transitions. [2020-07-20 01:23:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-07-20 01:23:43,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:23:43,460 INFO L422 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:23:43,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-07-20 01:23:43,674 INFO L427 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:23:43,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:23:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash -336643334, now seen corresponding path program 87 times [2020-07-20 01:23:43,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:23:43,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185903909] [2020-07-20 01:23:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:23:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:23:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 26535 backedges. 0 proven. 11397 refuted. 0 times theorem prover too weak. 15138 trivial. 0 not checked. [2020-07-20 01:24:09,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185903909] [2020-07-20 01:24:09,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253992061] [2020-07-20 01:24:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6ffcdac0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:24:09,544 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6ffcdac0 issued 2 check-sat command(s) [2020-07-20 01:24:09,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:24:09,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 178 conjunts are in the unsatisfiable core [2020-07-20 01:24:09,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:24:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 26535 backedges. 0 proven. 11397 refuted. 0 times theorem prover too weak. 15138 trivial. 0 not checked. [2020-07-20 01:24:10,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:24:10,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 94 [2020-07-20 01:24:10,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560838221] [2020-07-20 01:24:10,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-07-20 01:24:10,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:24:10,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-07-20 01:24:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4102, Invalid=4640, Unknown=0, NotChecked=0, Total=8742 [2020-07-20 01:24:10,038 INFO L87 Difference]: Start difference. First operand 287 states and 295 transitions. Second operand 94 states. [2020-07-20 01:24:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:24:14,789 INFO L93 Difference]: Finished difference Result 296 states and 306 transitions. [2020-07-20 01:24:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-07-20 01:24:14,790 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 622 [2020-07-20 01:24:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:24:14,793 INFO L225 Difference]: With dead ends: 296 [2020-07-20 01:24:14,793 INFO L226 Difference]: Without dead ends: 292 [2020-07-20 01:24:14,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7831 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=12379, Invalid=20927, Unknown=0, NotChecked=0, Total=33306 [2020-07-20 01:24:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-07-20 01:24:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2020-07-20 01:24:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-07-20 01:24:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 298 transitions. [2020-07-20 01:24:14,803 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 298 transitions. Word has length 622 [2020-07-20 01:24:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:24:14,804 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 298 transitions. [2020-07-20 01:24:14,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-07-20 01:24:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 298 transitions. [2020-07-20 01:24:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2020-07-20 01:24:14,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:24:14,808 INFO L422 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:24:15,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-07-20 01:24:15,009 INFO L427 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:24:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:24:15,010 INFO L82 PathProgramCache]: Analyzing trace with hash 554064165, now seen corresponding path program 88 times [2020-07-20 01:24:15,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:24:15,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312210241] [2020-07-20 01:24:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@33dd5ed1 [2020-07-20 01:24:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:24:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat