/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 04:19:31,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:19:31,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:19:31,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:19:31,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:19:31,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:19:31,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:19:31,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:19:31,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:19:31,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:19:31,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:19:31,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:19:31,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:19:31,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:19:31,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:19:31,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:19:31,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:19:31,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:19:31,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:19:31,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:19:31,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:19:31,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:19:31,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:19:31,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:19:31,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:19:31,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:19:31,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:19:31,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:19:31,419 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 04:19:31,434 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:19:31,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:19:31,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:19:31,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:19:31,436 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:19:31,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:19:31,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:19:31,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:19:31,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:19:31,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:19:31,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:19:31,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:19:31,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:19:31,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:19:31,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:19:31,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:19:31,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:19:31,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:19:31,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:19:31,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:19:31,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:19:31,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:19:31,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:19:31,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:19:31,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:19:31,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:19:31,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:19:31,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:19:31,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:19:31,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 04:19:31,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:19:31,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:19:31,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:19:31,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:19:31,766 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:19:31,768 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-20 04:19:31,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83b0ae1ea/98c17faeacbf4a21badf74103a4c08b7/FLAGe26218a8d [2020-07-20 04:19:32,513 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:19:32,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-20 04:19:32,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83b0ae1ea/98c17faeacbf4a21badf74103a4c08b7/FLAGe26218a8d [2020-07-20 04:19:32,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83b0ae1ea/98c17faeacbf4a21badf74103a4c08b7 [2020-07-20 04:19:32,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:19:32,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:19:32,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:19:32,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:19:32,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:19:32,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:19:32" (1/1) ... [2020-07-20 04:19:32,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c7b11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:32, skipping insertion in model container [2020-07-20 04:19:32,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:19:32" (1/1) ... [2020-07-20 04:19:32,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:19:32,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:19:33,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:19:33,940 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:19:34,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:19:34,665 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:19:34,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34 WrapperNode [2020-07-20 04:19:34,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:19:34,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:19:34,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:19:34,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:19:34,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (1/1) ... [2020-07-20 04:19:34,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:19:34,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:19:34,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:19:34,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:19:34,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (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 04:19:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:19:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:19:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:19:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:19:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:19:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 04:19:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 04:19:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 04:19:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 04:19:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:19:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:19:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 04:19:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 04:19:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 04:19:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 04:19:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 04:19:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 04:19:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 04:19:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 04:19:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:19:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:19:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:19:37,660 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:19:37,660 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 04:19:37,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:19:37 BoogieIcfgContainer [2020-07-20 04:19:37,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:19:37,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:19:37,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:19:37,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:19:37,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:19:32" (1/3) ... [2020-07-20 04:19:37,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abe12b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:19:37, skipping insertion in model container [2020-07-20 04:19:37,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:19:34" (2/3) ... [2020-07-20 04:19:37,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abe12b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:19:37, skipping insertion in model container [2020-07-20 04:19:37,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:19:37" (3/3) ... [2020-07-20 04:19:37,680 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-07-20 04:19:37,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:19:37,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:19:37,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:19:37,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:19:37,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:19:37,743 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:19:37,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:19:37,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:19:37,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:19:37,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:19:37,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:19:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2020-07-20 04:19:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 04:19:37,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:19:37,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:19:37,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:19:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:19:37,814 INFO L82 PathProgramCache]: Analyzing trace with hash 578636414, now seen corresponding path program 1 times [2020-07-20 04:19:37,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:19:37,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420939836] [2020-07-20 04:19:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:19:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:39,509 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:19:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:39,675 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 04:19:39,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420939836] [2020-07-20 04:19:39,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:19:39,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:19:39,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617068410] [2020-07-20 04:19:39,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:19:39,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:19:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:19:39,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:19:39,701 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 4 states. [2020-07-20 04:19:40,213 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 04:19:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:19:45,525 INFO L93 Difference]: Finished difference Result 1515 states and 2659 transitions. [2020-07-20 04:19:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:19:45,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 04:19:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:19:45,556 INFO L225 Difference]: With dead ends: 1515 [2020-07-20 04:19:45,556 INFO L226 Difference]: Without dead ends: 1299 [2020-07-20 04:19:45,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:19:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-07-20 04:19:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2020-07-20 04:19:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-07-20 04:19:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2028 transitions. [2020-07-20 04:19:45,687 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2028 transitions. Word has length 318 [2020-07-20 04:19:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:19:45,688 INFO L479 AbstractCegarLoop]: Abstraction has 1297 states and 2028 transitions. [2020-07-20 04:19:45,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:19:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2028 transitions. [2020-07-20 04:19:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 04:19:45,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:19:45,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:19:45,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:19:45,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:19:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:19:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1367796252, now seen corresponding path program 1 times [2020-07-20 04:19:45,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:19:45,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526769582] [2020-07-20 04:19:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:19:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:46,694 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:19:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:46,995 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 04:19:46,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526769582] [2020-07-20 04:19:46,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:19:46,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:19:46,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103532060] [2020-07-20 04:19:46,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:19:47,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:19:47,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:19:47,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:19:47,001 INFO L87 Difference]: Start difference. First operand 1297 states and 2028 transitions. Second operand 4 states. [2020-07-20 04:19:47,543 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 04:19:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:19:52,229 INFO L93 Difference]: Finished difference Result 2671 states and 4201 transitions. [2020-07-20 04:19:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:19:52,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 04:19:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:19:52,249 INFO L225 Difference]: With dead ends: 2671 [2020-07-20 04:19:52,250 INFO L226 Difference]: Without dead ends: 2289 [2020-07-20 04:19:52,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:19:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-07-20 04:19:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2020-07-20 04:19:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-07-20 04:19:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3564 transitions. [2020-07-20 04:19:52,394 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3564 transitions. Word has length 318 [2020-07-20 04:19:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:19:52,397 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 3564 transitions. [2020-07-20 04:19:52,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:19:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3564 transitions. [2020-07-20 04:19:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 04:19:52,410 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:19:52,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:19:52,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 04:19:52,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:19:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:19:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1797025293, now seen corresponding path program 1 times [2020-07-20 04:19:52,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:19:52,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778828153] [2020-07-20 04:19:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:19:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:53,414 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:19:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:53,749 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 04:19:53,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778828153] [2020-07-20 04:19:53,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:19:53,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:19:53,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122700520] [2020-07-20 04:19:53,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:19:53,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:19:53,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:19:53,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:19:53,763 INFO L87 Difference]: Start difference. First operand 2287 states and 3564 transitions. Second operand 4 states. [2020-07-20 04:19:54,206 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 04:19:58,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:19:58,381 INFO L93 Difference]: Finished difference Result 4943 states and 7762 transitions. [2020-07-20 04:19:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:19:58,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 04:19:58,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:19:58,405 INFO L225 Difference]: With dead ends: 4943 [2020-07-20 04:19:58,405 INFO L226 Difference]: Without dead ends: 4229 [2020-07-20 04:19:58,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:19:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2020-07-20 04:19:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4227. [2020-07-20 04:19:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-07-20 04:19:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 6568 transitions. [2020-07-20 04:19:58,541 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 6568 transitions. Word has length 318 [2020-07-20 04:19:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:19:58,542 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 6568 transitions. [2020-07-20 04:19:58,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:19:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 6568 transitions. [2020-07-20 04:19:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 04:19:58,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:19:58,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:19:58,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 04:19:58,556 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:19:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:19:58,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1914723175, now seen corresponding path program 1 times [2020-07-20 04:19:58,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:19:58,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303682545] [2020-07-20 04:19:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:19:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:59,402 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:19:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:19:59,541 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 04:19:59,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303682545] [2020-07-20 04:19:59,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:19:59,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:19:59,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705938388] [2020-07-20 04:19:59,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:19:59,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:19:59,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:19:59,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:19:59,544 INFO L87 Difference]: Start difference. First operand 4227 states and 6568 transitions. Second operand 4 states. [2020-07-20 04:19:59,979 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-07-20 04:20:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:20:04,192 INFO L93 Difference]: Finished difference Result 9359 states and 14670 transitions. [2020-07-20 04:20:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:20:04,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-07-20 04:20:04,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:20:04,234 INFO L225 Difference]: With dead ends: 9359 [2020-07-20 04:20:04,234 INFO L226 Difference]: Without dead ends: 8029 [2020-07-20 04:20:04,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:20:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2020-07-20 04:20:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 8027. [2020-07-20 04:20:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8027 states. [2020-07-20 04:20:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 12440 transitions. [2020-07-20 04:20:04,467 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 12440 transitions. Word has length 318 [2020-07-20 04:20:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:20:04,468 INFO L479 AbstractCegarLoop]: Abstraction has 8027 states and 12440 transitions. [2020-07-20 04:20:04,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:20:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 12440 transitions. [2020-07-20 04:20:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-20 04:20:04,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:20:04,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:20:04,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 04:20:04,491 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:20:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:20:04,492 INFO L82 PathProgramCache]: Analyzing trace with hash 769893352, now seen corresponding path program 1 times [2020-07-20 04:20:04,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:20:04,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509431050] [2020-07-20 04:20:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:20:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:05,634 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:20:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:05,850 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 04:20:05,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509431050] [2020-07-20 04:20:05,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:20:05,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:20:05,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464888649] [2020-07-20 04:20:05,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:20:05,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:20:05,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:20:05,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:20:05,854 INFO L87 Difference]: Start difference. First operand 8027 states and 12440 transitions. Second operand 5 states. [2020-07-20 04:20:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:20:13,388 INFO L93 Difference]: Finished difference Result 23754 states and 36777 transitions. [2020-07-20 04:20:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:20:13,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-07-20 04:20:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:20:13,449 INFO L225 Difference]: With dead ends: 23754 [2020-07-20 04:20:13,449 INFO L226 Difference]: Without dead ends: 15742 [2020-07-20 04:20:13,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:20:13,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15742 states. [2020-07-20 04:20:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15742 to 15740. [2020-07-20 04:20:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15740 states. [2020-07-20 04:20:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 24254 transitions. [2020-07-20 04:20:14,064 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 24254 transitions. Word has length 318 [2020-07-20 04:20:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:20:14,065 INFO L479 AbstractCegarLoop]: Abstraction has 15740 states and 24254 transitions. [2020-07-20 04:20:14,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:20:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 24254 transitions. [2020-07-20 04:20:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-07-20 04:20:14,097 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:20:14,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:20:14,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 04:20:14,098 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:20:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:20:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash -685152901, now seen corresponding path program 1 times [2020-07-20 04:20:14,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:20:14,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661087360] [2020-07-20 04:20:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:20:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:14,818 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:20:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:15,050 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 04:20:15,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661087360] [2020-07-20 04:20:15,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:20:15,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:20:15,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553608244] [2020-07-20 04:20:15,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:20:15,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:20:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:20:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:15,059 INFO L87 Difference]: Start difference. First operand 15740 states and 24254 transitions. Second operand 4 states. [2020-07-20 04:20:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:20:23,545 INFO L93 Difference]: Finished difference Result 46481 states and 71518 transitions. [2020-07-20 04:20:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:20:23,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-07-20 04:20:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:20:23,620 INFO L225 Difference]: With dead ends: 46481 [2020-07-20 04:20:23,620 INFO L226 Difference]: Without dead ends: 30870 [2020-07-20 04:20:23,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30870 states. [2020-07-20 04:20:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30870 to 30868. [2020-07-20 04:20:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30868 states. [2020-07-20 04:20:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30868 states to 30868 states and 47285 transitions. [2020-07-20 04:20:24,829 INFO L78 Accepts]: Start accepts. Automaton has 30868 states and 47285 transitions. Word has length 320 [2020-07-20 04:20:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:20:24,829 INFO L479 AbstractCegarLoop]: Abstraction has 30868 states and 47285 transitions. [2020-07-20 04:20:24,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:20:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 30868 states and 47285 transitions. [2020-07-20 04:20:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-07-20 04:20:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:20:24,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:20:24,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 04:20:24,894 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:20:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:20:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash -810813248, now seen corresponding path program 1 times [2020-07-20 04:20:24,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:20:24,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951567713] [2020-07-20 04:20:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:20:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:25,509 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:20:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:25,635 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 04:20:25,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951567713] [2020-07-20 04:20:25,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:20:25,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:20:25,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909680443] [2020-07-20 04:20:25,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:20:25,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:20:25,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:20:25,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:25,639 INFO L87 Difference]: Start difference. First operand 30868 states and 47285 transitions. Second operand 4 states. [2020-07-20 04:20:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:20:35,744 INFO L93 Difference]: Finished difference Result 92529 states and 141731 transitions. [2020-07-20 04:20:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:20:35,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-07-20 04:20:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:20:35,886 INFO L225 Difference]: With dead ends: 92529 [2020-07-20 04:20:35,886 INFO L226 Difference]: Without dead ends: 61703 [2020-07-20 04:20:35,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61703 states. [2020-07-20 04:20:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61703 to 30887. [2020-07-20 04:20:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30887 states. [2020-07-20 04:20:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30887 states to 30887 states and 47313 transitions. [2020-07-20 04:20:37,189 INFO L78 Accepts]: Start accepts. Automaton has 30887 states and 47313 transitions. Word has length 320 [2020-07-20 04:20:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:20:37,189 INFO L479 AbstractCegarLoop]: Abstraction has 30887 states and 47313 transitions. [2020-07-20 04:20:37,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:20:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 30887 states and 47313 transitions. [2020-07-20 04:20:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-20 04:20:37,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:20:37,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:20:37,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 04:20:37,241 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:20:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:20:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash -83680004, now seen corresponding path program 1 times [2020-07-20 04:20:37,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:20:37,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735262295] [2020-07-20 04:20:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:20:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:37,783 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:20:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:38,077 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 04:20:38,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735262295] [2020-07-20 04:20:38,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:20:38,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:20:38,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982524194] [2020-07-20 04:20:38,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:20:38,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:20:38,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:20:38,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:38,080 INFO L87 Difference]: Start difference. First operand 30887 states and 47313 transitions. Second operand 4 states. [2020-07-20 04:20:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:20:47,942 INFO L93 Difference]: Finished difference Result 92548 states and 141752 transitions. [2020-07-20 04:20:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:20:47,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-07-20 04:20:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:20:48,025 INFO L225 Difference]: With dead ends: 92548 [2020-07-20 04:20:48,026 INFO L226 Difference]: Without dead ends: 61721 [2020-07-20 04:20:48,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61721 states. [2020-07-20 04:20:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61721 to 30905. [2020-07-20 04:20:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30905 states. [2020-07-20 04:20:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30905 states to 30905 states and 47334 transitions. [2020-07-20 04:20:49,455 INFO L78 Accepts]: Start accepts. Automaton has 30905 states and 47334 transitions. Word has length 321 [2020-07-20 04:20:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:20:49,455 INFO L479 AbstractCegarLoop]: Abstraction has 30905 states and 47334 transitions. [2020-07-20 04:20:49,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:20:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 30905 states and 47334 transitions. [2020-07-20 04:20:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-20 04:20:49,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:20:49,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:20:49,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 04:20:49,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:20:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:20:49,479 INFO L82 PathProgramCache]: Analyzing trace with hash 165674294, now seen corresponding path program 1 times [2020-07-20 04:20:49,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:20:49,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306621198] [2020-07-20 04:20:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:20:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:50,051 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:20:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:20:50,220 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 04:20:50,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306621198] [2020-07-20 04:20:50,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:20:50,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:20:50,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572200339] [2020-07-20 04:20:50,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:20:50,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:20:50,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:20:50,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:20:50,225 INFO L87 Difference]: Start difference. First operand 30905 states and 47334 transitions. Second operand 4 states. [2020-07-20 04:21:00,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:21:00,621 INFO L93 Difference]: Finished difference Result 87746 states and 134159 transitions. [2020-07-20 04:21:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:21:00,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-07-20 04:21:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:21:00,683 INFO L225 Difference]: With dead ends: 87746 [2020-07-20 04:21:00,683 INFO L226 Difference]: Without dead ends: 57086 [2020-07-20 04:21:00,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:21:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57086 states. [2020-07-20 04:21:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57086 to 57084. [2020-07-20 04:21:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57084 states. [2020-07-20 04:21:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57084 states to 57084 states and 86830 transitions. [2020-07-20 04:21:03,955 INFO L78 Accepts]: Start accepts. Automaton has 57084 states and 86830 transitions. Word has length 322 [2020-07-20 04:21:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:21:03,956 INFO L479 AbstractCegarLoop]: Abstraction has 57084 states and 86830 transitions. [2020-07-20 04:21:03,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:21:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 57084 states and 86830 transitions. [2020-07-20 04:21:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-20 04:21:04,004 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:21:04,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:21:04,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 04:21:04,005 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:21:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:21:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1404392915, now seen corresponding path program 1 times [2020-07-20 04:21:04,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:21:04,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161332748] [2020-07-20 04:21:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:21:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:04,842 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:21:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:04,937 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 04:21:04,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161332748] [2020-07-20 04:21:04,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:21:04,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:21:04,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059484134] [2020-07-20 04:21:04,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:21:04,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:21:04,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:21:04,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:21:04,940 INFO L87 Difference]: Start difference. First operand 57084 states and 86830 transitions. Second operand 5 states. [2020-07-20 04:21:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:21:13,045 INFO L93 Difference]: Finished difference Result 115449 states and 175645 transitions. [2020-07-20 04:21:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:21:13,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-07-20 04:21:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:21:13,103 INFO L225 Difference]: With dead ends: 115449 [2020-07-20 04:21:13,103 INFO L226 Difference]: Without dead ends: 57905 [2020-07-20 04:21:13,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:21:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57905 states. [2020-07-20 04:21:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57905 to 57903. [2020-07-20 04:21:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57903 states. [2020-07-20 04:21:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57903 states to 57903 states and 87752 transitions. [2020-07-20 04:21:14,857 INFO L78 Accepts]: Start accepts. Automaton has 57903 states and 87752 transitions. Word has length 322 [2020-07-20 04:21:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:21:14,857 INFO L479 AbstractCegarLoop]: Abstraction has 57903 states and 87752 transitions. [2020-07-20 04:21:14,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:21:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 57903 states and 87752 transitions. [2020-07-20 04:21:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 04:21:14,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:21:14,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:21:14,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 04:21:14,896 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:21:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:21:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash -715741738, now seen corresponding path program 1 times [2020-07-20 04:21:14,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:21:14,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230216573] [2020-07-20 04:21:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:21:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:15,749 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:21:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:15,840 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 04:21:15,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230216573] [2020-07-20 04:21:15,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:21:15,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:21:15,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891002729] [2020-07-20 04:21:15,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:21:15,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:21:15,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:21:15,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:21:15,842 INFO L87 Difference]: Start difference. First operand 57903 states and 87752 transitions. Second operand 4 states. [2020-07-20 04:21:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:21:25,315 INFO L93 Difference]: Finished difference Result 172837 states and 261779 transitions. [2020-07-20 04:21:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:21:25,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 04:21:25,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:21:25,447 INFO L225 Difference]: With dead ends: 172837 [2020-07-20 04:21:25,447 INFO L226 Difference]: Without dead ends: 115387 [2020-07-20 04:21:25,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:21:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115387 states. [2020-07-20 04:21:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115387 to 57961. [2020-07-20 04:21:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57961 states. [2020-07-20 04:21:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57961 states to 57961 states and 87827 transitions. [2020-07-20 04:21:27,959 INFO L78 Accepts]: Start accepts. Automaton has 57961 states and 87827 transitions. Word has length 324 [2020-07-20 04:21:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:21:27,959 INFO L479 AbstractCegarLoop]: Abstraction has 57961 states and 87827 transitions. [2020-07-20 04:21:27,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:21:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 57961 states and 87827 transitions. [2020-07-20 04:21:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 04:21:27,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:21:27,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:21:27,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 04:21:27,998 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:21:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:21:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash 396725324, now seen corresponding path program 1 times [2020-07-20 04:21:27,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:21:27,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576112597] [2020-07-20 04:21:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:21:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:28,582 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:21:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:28,696 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 04:21:28,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576112597] [2020-07-20 04:21:28,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:21:28,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:21:28,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541379956] [2020-07-20 04:21:28,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:21:28,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:21:28,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:21:28,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:21:28,698 INFO L87 Difference]: Start difference. First operand 57961 states and 87827 transitions. Second operand 4 states. [2020-07-20 04:21:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:21:42,652 INFO L93 Difference]: Finished difference Result 171218 states and 259030 transitions. [2020-07-20 04:21:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:21:42,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 04:21:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:21:42,795 INFO L225 Difference]: With dead ends: 171218 [2020-07-20 04:21:42,795 INFO L226 Difference]: Without dead ends: 113542 [2020-07-20 04:21:42,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:21:43,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113542 states. [2020-07-20 04:21:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113542 to 113540. [2020-07-20 04:21:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113540 states. [2020-07-20 04:21:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113540 states to 113540 states and 170856 transitions. [2020-07-20 04:21:47,347 INFO L78 Accepts]: Start accepts. Automaton has 113540 states and 170856 transitions. Word has length 324 [2020-07-20 04:21:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:21:47,348 INFO L479 AbstractCegarLoop]: Abstraction has 113540 states and 170856 transitions. [2020-07-20 04:21:47,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:21:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 113540 states and 170856 transitions. [2020-07-20 04:21:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 04:21:47,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:21:47,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:21:47,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 04:21:47,432 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:21:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:21:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1430415401, now seen corresponding path program 1 times [2020-07-20 04:21:47,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:21:47,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764906812] [2020-07-20 04:21:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:21:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:48,409 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:21:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:21:48,524 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 04:21:48,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764906812] [2020-07-20 04:21:48,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:21:48,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:21:48,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521957873] [2020-07-20 04:21:48,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:21:48,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:21:48,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:21:48,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:21:48,526 INFO L87 Difference]: Start difference. First operand 113540 states and 170856 transitions. Second operand 5 states. [2020-07-20 04:22:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:22:01,169 INFO L93 Difference]: Finished difference Result 230524 states and 346909 transitions. [2020-07-20 04:22:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:22:01,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-07-20 04:22:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:22:01,300 INFO L225 Difference]: With dead ends: 230524 [2020-07-20 04:22:01,300 INFO L226 Difference]: Without dead ends: 115930 [2020-07-20 04:22:01,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:22:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115930 states. [2020-07-20 04:22:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115930 to 115928. [2020-07-20 04:22:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115928 states. [2020-07-20 04:22:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115928 states to 115928 states and 173777 transitions. [2020-07-20 04:22:08,220 INFO L78 Accepts]: Start accepts. Automaton has 115928 states and 173777 transitions. Word has length 324 [2020-07-20 04:22:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:22:08,220 INFO L479 AbstractCegarLoop]: Abstraction has 115928 states and 173777 transitions. [2020-07-20 04:22:08,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:22:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 115928 states and 173777 transitions. [2020-07-20 04:22:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 04:22:08,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:22:08,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:22:08,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 04:22:08,300 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:22:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:22:08,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1590895399, now seen corresponding path program 1 times [2020-07-20 04:22:08,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:22:08,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297081870] [2020-07-20 04:22:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:22:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:22:09,632 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:22:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:22:09,749 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 04:22:09,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297081870] [2020-07-20 04:22:09,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:22:09,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:22:09,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826695771] [2020-07-20 04:22:09,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:22:09,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:22:09,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:22:09,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:22:09,753 INFO L87 Difference]: Start difference. First operand 115928 states and 173777 transitions. Second operand 5 states. [2020-07-20 04:22:37,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:22:37,333 INFO L93 Difference]: Finished difference Result 441761 states and 661348 transitions. [2020-07-20 04:22:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 04:22:37,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-07-20 04:22:37,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:22:37,704 INFO L225 Difference]: With dead ends: 441761 [2020-07-20 04:22:37,704 INFO L226 Difference]: Without dead ends: 327813 [2020-07-20 04:22:37,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:22:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327813 states. [2020-07-20 04:22:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327813 to 116455. [2020-07-20 04:22:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116455 states. [2020-07-20 04:22:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116455 states to 116455 states and 174537 transitions. [2020-07-20 04:22:48,963 INFO L78 Accepts]: Start accepts. Automaton has 116455 states and 174537 transitions. Word has length 324 [2020-07-20 04:22:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:22:48,964 INFO L479 AbstractCegarLoop]: Abstraction has 116455 states and 174537 transitions. [2020-07-20 04:22:48,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:22:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 116455 states and 174537 transitions. [2020-07-20 04:22:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 04:22:49,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:22:49,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:22:49,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 04:22:49,050 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:22:49,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:22:49,050 INFO L82 PathProgramCache]: Analyzing trace with hash 445665130, now seen corresponding path program 1 times [2020-07-20 04:22:49,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:22:49,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603542910] [2020-07-20 04:22:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:22:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:22:49,670 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:22:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:22:49,764 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 04:22:49,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603542910] [2020-07-20 04:22:49,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:22:49,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:22:49,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312356525] [2020-07-20 04:22:49,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:22:49,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:22:49,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:22:49,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:22:49,766 INFO L87 Difference]: Start difference. First operand 116455 states and 174537 transitions. Second operand 4 states. [2020-07-20 04:23:07,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:23:07,461 INFO L93 Difference]: Finished difference Result 295887 states and 447035 transitions. [2020-07-20 04:23:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:23:07,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 04:23:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:23:07,674 INFO L225 Difference]: With dead ends: 295887 [2020-07-20 04:23:07,675 INFO L226 Difference]: Without dead ends: 185881 [2020-07-20 04:23:07,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:23:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185881 states. [2020-07-20 04:23:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185881 to 146359. [2020-07-20 04:23:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146359 states. [2020-07-20 04:23:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146359 states to 146359 states and 222895 transitions. [2020-07-20 04:23:17,019 INFO L78 Accepts]: Start accepts. Automaton has 146359 states and 222895 transitions. Word has length 324 [2020-07-20 04:23:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:23:17,020 INFO L479 AbstractCegarLoop]: Abstraction has 146359 states and 222895 transitions. [2020-07-20 04:23:17,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:23:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 146359 states and 222895 transitions. [2020-07-20 04:23:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 04:23:17,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:23:17,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:23:17,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 04:23:17,096 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:23:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:23:17,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1844980394, now seen corresponding path program 1 times [2020-07-20 04:23:17,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:23:17,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573188215] [2020-07-20 04:23:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:23:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:23:17,714 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:23:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:23:17,841 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 04:23:17,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573188215] [2020-07-20 04:23:17,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:23:17,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:23:17,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082937272] [2020-07-20 04:23:17,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:23:17,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:23:17,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:23:17,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:23:17,844 INFO L87 Difference]: Start difference. First operand 146359 states and 222895 transitions. Second operand 4 states. [2020-07-20 04:23:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:23:38,944 INFO L93 Difference]: Finished difference Result 370403 states and 566989 transitions. [2020-07-20 04:23:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:23:38,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 04:23:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:23:39,233 INFO L225 Difference]: With dead ends: 370403 [2020-07-20 04:23:39,233 INFO L226 Difference]: Without dead ends: 231897 [2020-07-20 04:23:39,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:23:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231897 states. [2020-07-20 04:23:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231897 to 199847. [2020-07-20 04:23:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199847 states. [2020-07-20 04:23:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199847 states to 199847 states and 309023 transitions. [2020-07-20 04:23:55,494 INFO L78 Accepts]: Start accepts. Automaton has 199847 states and 309023 transitions. Word has length 326 [2020-07-20 04:23:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:23:55,494 INFO L479 AbstractCegarLoop]: Abstraction has 199847 states and 309023 transitions. [2020-07-20 04:23:55,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:23:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 199847 states and 309023 transitions. [2020-07-20 04:23:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 04:23:55,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:23:55,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:23:55,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 04:23:55,569 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:23:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:23:55,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1689083675, now seen corresponding path program 1 times [2020-07-20 04:23:55,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:23:55,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321535695] [2020-07-20 04:23:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:23:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:23:56,109 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:23:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:23:56,171 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 04:23:56,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321535695] [2020-07-20 04:23:56,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:23:56,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:23:56,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724243180] [2020-07-20 04:23:56,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:23:56,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:23:56,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:23:56,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:23:56,173 INFO L87 Difference]: Start difference. First operand 199847 states and 309023 transitions. Second operand 4 states. [2020-07-20 04:24:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:24:32,235 INFO L93 Difference]: Finished difference Result 593639 states and 917537 transitions. [2020-07-20 04:24:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:24:32,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 04:24:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:24:32,792 INFO L225 Difference]: With dead ends: 593639 [2020-07-20 04:24:32,792 INFO L226 Difference]: Without dead ends: 396515 [2020-07-20 04:24:32,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:24:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396515 states. [2020-07-20 04:24:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396515 to 200115. [2020-07-20 04:24:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200115 states. [2020-07-20 04:24:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200115 states to 200115 states and 309383 transitions. [2020-07-20 04:24:51,262 INFO L78 Accepts]: Start accepts. Automaton has 200115 states and 309383 transitions. Word has length 326 [2020-07-20 04:24:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:24:51,262 INFO L479 AbstractCegarLoop]: Abstraction has 200115 states and 309383 transitions. [2020-07-20 04:24:51,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:24:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 200115 states and 309383 transitions. [2020-07-20 04:24:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 04:24:51,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:24:51,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:24:51,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 04:24:51,335 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:24:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:24:51,336 INFO L82 PathProgramCache]: Analyzing trace with hash -700863383, now seen corresponding path program 1 times [2020-07-20 04:24:51,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:24:51,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055106889] [2020-07-20 04:24:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:24:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:24:51,975 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:24:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:24:52,087 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 04:24:52,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055106889] [2020-07-20 04:24:52,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:24:52,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 04:24:52,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926824261] [2020-07-20 04:24:52,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 04:24:52,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:24:52,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 04:24:52,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:24:52,092 INFO L87 Difference]: Start difference. First operand 200115 states and 309383 transitions. Second operand 4 states. [2020-07-20 04:25:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:25:31,115 INFO L93 Difference]: Finished difference Result 593819 states and 917669 transitions. [2020-07-20 04:25:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:25:31,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 04:25:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:25:31,632 INFO L225 Difference]: With dead ends: 593819 [2020-07-20 04:25:31,632 INFO L226 Difference]: Without dead ends: 396715 [2020-07-20 04:25:31,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 04:25:32,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396715 states. [2020-07-20 04:25:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396715 to 200347. [2020-07-20 04:25:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200347 states. [2020-07-20 04:25:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200347 states to 200347 states and 309609 transitions. [2020-07-20 04:25:47,234 INFO L78 Accepts]: Start accepts. Automaton has 200347 states and 309609 transitions. Word has length 327 [2020-07-20 04:25:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:25:47,234 INFO L479 AbstractCegarLoop]: Abstraction has 200347 states and 309609 transitions. [2020-07-20 04:25:47,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 04:25:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 200347 states and 309609 transitions. [2020-07-20 04:25:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 04:25:47,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:25:47,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:25:47,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 04:25:47,818 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:25:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:25:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1551390185, now seen corresponding path program 1 times [2020-07-20 04:25:47,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:25:47,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910446927] [2020-07-20 04:25:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:25:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:25:48,381 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:25:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:25:48,472 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 04:25:48,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910446927] [2020-07-20 04:25:48,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:25:48,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:25:48,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353495962] [2020-07-20 04:25:48,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:25:48,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:25:48,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:25:48,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:25:48,475 INFO L87 Difference]: Start difference. First operand 200347 states and 309609 transitions. Second operand 6 states. [2020-07-20 04:25:48,945 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 04:26:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:26:10,969 INFO L93 Difference]: Finished difference Result 393817 states and 608812 transitions. [2020-07-20 04:26:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:26:10,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 327 [2020-07-20 04:26:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:26:11,237 INFO L225 Difference]: With dead ends: 393817 [2020-07-20 04:26:11,237 INFO L226 Difference]: Without dead ends: 200347 [2020-07-20 04:26:11,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 04:26:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200347 states. [2020-07-20 04:26:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200347 to 200347. [2020-07-20 04:26:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200347 states. [2020-07-20 04:26:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200347 states to 200347 states and 307087 transitions. [2020-07-20 04:26:31,592 INFO L78 Accepts]: Start accepts. Automaton has 200347 states and 307087 transitions. Word has length 327 [2020-07-20 04:26:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:26:31,593 INFO L479 AbstractCegarLoop]: Abstraction has 200347 states and 307087 transitions. [2020-07-20 04:26:31,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:26:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 200347 states and 307087 transitions. [2020-07-20 04:26:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 04:26:31,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:26:31,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:26:31,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 04:26:31,673 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:26:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:26:31,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1871199150, now seen corresponding path program 1 times [2020-07-20 04:26:31,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:26:31,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351034894] [2020-07-20 04:26:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:26:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:26:32,484 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:26:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:26:32,629 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 04:26:32,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351034894] [2020-07-20 04:26:32,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:26:32,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 04:26:32,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804943651] [2020-07-20 04:26:32,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 04:26:32,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:26:32,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 04:26:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:26:32,631 INFO L87 Difference]: Start difference. First operand 200347 states and 307087 transitions. Second operand 10 states. [2020-07-20 04:26:33,138 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-07-20 04:27:27,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:27:27,473 INFO L93 Difference]: Finished difference Result 718473 states and 1114748 transitions. [2020-07-20 04:27:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 04:27:27,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 327 [2020-07-20 04:27:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:27:28,340 INFO L225 Difference]: With dead ends: 718473 [2020-07-20 04:27:28,340 INFO L226 Difference]: Without dead ends: 525651 [2020-07-20 04:27:28,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-07-20 04:27:28,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525651 states. [2020-07-20 04:28:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525651 to 379683. [2020-07-20 04:28:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379683 states. [2020-07-20 04:28:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379683 states to 379683 states and 582699 transitions. [2020-07-20 04:28:07,871 INFO L78 Accepts]: Start accepts. Automaton has 379683 states and 582699 transitions. Word has length 327 [2020-07-20 04:28:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:28:07,871 INFO L479 AbstractCegarLoop]: Abstraction has 379683 states and 582699 transitions. [2020-07-20 04:28:07,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 04:28:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 379683 states and 582699 transitions. [2020-07-20 04:28:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 04:28:08,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:28:08,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:28:08,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 04:28:08,790 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:28:08,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:28:08,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1485523804, now seen corresponding path program 1 times [2020-07-20 04:28:08,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:28:08,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981143098] [2020-07-20 04:28:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:28:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:28:09,542 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:28:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:28:09,640 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 04:28:09,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981143098] [2020-07-20 04:28:09,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:28:09,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:28:09,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126311890] [2020-07-20 04:28:09,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:28:09,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:28:09,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:28:09,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:28:09,643 INFO L87 Difference]: Start difference. First operand 379683 states and 582699 transitions. Second operand 5 states. [2020-07-20 04:29:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:29:24,432 INFO L93 Difference]: Finished difference Result 1120805 states and 1721566 transitions. [2020-07-20 04:29:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:29:24,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-07-20 04:29:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:29:25,671 INFO L225 Difference]: With dead ends: 1120805 [2020-07-20 04:29:25,672 INFO L226 Difference]: Without dead ends: 741908 [2020-07-20 04:29:25,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:29:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741908 states. [2020-07-20 04:30:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741908 to 741906. [2020-07-20 04:30:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741906 states. [2020-07-20 04:30:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741906 states to 741906 states and 1134941 transitions. [2020-07-20 04:30:53,853 INFO L78 Accepts]: Start accepts. Automaton has 741906 states and 1134941 transitions. Word has length 327 [2020-07-20 04:30:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:30:53,853 INFO L479 AbstractCegarLoop]: Abstraction has 741906 states and 1134941 transitions. [2020-07-20 04:30:53,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:30:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 741906 states and 1134941 transitions. [2020-07-20 04:30:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 04:30:54,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:30:54,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:30:54,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 04:30:54,110 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:30:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:30:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1259906926, now seen corresponding path program 1 times [2020-07-20 04:30:54,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:30:54,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346655134] [2020-07-20 04:30:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d7c5703 [2020-07-20 04:30:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:30:54,802 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-07-20 04:30:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:30:54,877 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 04:30:54,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346655134] [2020-07-20 04:30:54,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:30:54,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:30:54,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317747704] [2020-07-20 04:30:54,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:30:54,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:30:54,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:30:54,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:30:54,880 INFO L87 Difference]: Start difference. First operand 741906 states and 1134941 transitions. Second operand 5 states.