/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 02:14:54,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 02:14:54,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 02:14:54,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 02:14:54,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 02:14:54,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 02:14:54,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 02:14:54,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 02:14:54,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 02:14:54,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 02:14:54,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 02:14:54,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 02:14:54,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 02:14:54,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 02:14:54,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 02:14:54,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 02:14:54,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 02:14:55,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 02:14:55,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 02:14:55,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 02:14:55,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 02:14:55,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 02:14:55,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 02:14:55,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 02:14:55,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 02:14:55,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 02:14:55,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 02:14:55,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 02:14:55,036 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 02:14:55,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 02:14:55,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 02:14:55,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 02:14:55,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 02:14:55,059 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 02:14:55,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 02:14:55,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 02:14:55,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 02:14:55,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 02:14:55,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 02:14:55,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 02:14:55,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 02:14:55,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 02:14:55,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 02:14:55,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 02:14:55,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 02:14:55,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 02:14:55,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 02:14:55,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 02:14:55,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 02:14:55,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 02:14:55,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 02:14:55,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 02:14:55,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 02:14:55,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 02:14:55,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 02:14:55,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 02:14:55,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 02:14:55,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 02:14:55,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 02:14:55,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 02:14:55,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 02:14:55,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 02:14:55,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 02:14:55,397 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 02:14:55,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 02:14:55,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca35900f/64f1c18f9feb4fe9b13b776114c5cf07/FLAG69e28f4c8 [2020-07-20 02:14:56,196 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 02:14:56,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 02:14:56,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca35900f/64f1c18f9feb4fe9b13b776114c5cf07/FLAG69e28f4c8 [2020-07-20 02:14:56,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca35900f/64f1c18f9feb4fe9b13b776114c5cf07 [2020-07-20 02:14:56,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 02:14:56,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 02:14:56,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 02:14:56,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 02:14:56,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 02:14:56,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:14:56" (1/1) ... [2020-07-20 02:14:56,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683bfa51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:56, skipping insertion in model container [2020-07-20 02:14:56,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:14:56" (1/1) ... [2020-07-20 02:14:56,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 02:14:56,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 02:14:58,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:14:58,067 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 02:14:59,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:14:59,252 INFO L208 MainTranslator]: Completed translation [2020-07-20 02:14:59,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59 WrapperNode [2020-07-20 02:14:59,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 02:14:59,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 02:14:59,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 02:14:59,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 02:14:59,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (1/1) ... [2020-07-20 02:14:59,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 02:14:59,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 02:14:59,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 02:14:59,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 02:14:59,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (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 02:14:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 02:14:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 02:14:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 02:14:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 02:14:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 02:14:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 02:14:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 02:14:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 02:14:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 02:14:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 02:14:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 02:14:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 02:14:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 02:14:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 02:14:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 02:14:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 02:14:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 02:14:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 02:14:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 02:14:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 02:14:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 02:14:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 02:15:02,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 02:15:02,629 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 02:15:02,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:15:02 BoogieIcfgContainer [2020-07-20 02:15:02,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 02:15:02,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 02:15:02,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 02:15:02,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 02:15:02,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:14:56" (1/3) ... [2020-07-20 02:15:02,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738c407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:15:02, skipping insertion in model container [2020-07-20 02:15:02,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:14:59" (2/3) ... [2020-07-20 02:15:02,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738c407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:15:02, skipping insertion in model container [2020-07-20 02:15:02,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:15:02" (3/3) ... [2020-07-20 02:15:02,673 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 02:15:02,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 02:15:02,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 02:15:02,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 02:15:02,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 02:15:02,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 02:15:02,744 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 02:15:02,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 02:15:02,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 02:15:02,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 02:15:02,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 02:15:02,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 02:15:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-20 02:15:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:15:02,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:02,838 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 02:15:02,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:02,846 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-20 02:15:02,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:02,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084759784] [2020-07-20 02:15:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:15:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:04,802 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:15:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:05,033 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 02:15:05,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084759784] [2020-07-20 02:15:05,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:05,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:05,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444297261] [2020-07-20 02:15:05,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:05,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:05,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:05,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:05,066 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2020-07-20 02:15:05,720 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-07-20 02:15:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:13,368 INFO L93 Difference]: Finished difference Result 1794 states and 3183 transitions. [2020-07-20 02:15:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:15:13,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 02:15:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:13,403 INFO L225 Difference]: With dead ends: 1794 [2020-07-20 02:15:13,404 INFO L226 Difference]: Without dead ends: 1483 [2020-07-20 02:15:13,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:15:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-07-20 02:15:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2020-07-20 02:15:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-07-20 02:15:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions. [2020-07-20 02:15:13,566 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327 [2020-07-20 02:15:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:13,568 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions. [2020-07-20 02:15:13,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:15:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions. [2020-07-20 02:15:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:15:13,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:13,577 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 02:15:13,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 02:15:13,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:13,579 INFO L82 PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times [2020-07-20 02:15:13,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:13,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785768501] [2020-07-20 02:15:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:15:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:14,634 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:15:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:14,914 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 02:15:14,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785768501] [2020-07-20 02:15:14,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:14,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:14,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8607412] [2020-07-20 02:15:14,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:14,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:14,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:14,923 INFO L87 Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 4 states. [2020-07-20 02:15:15,682 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-07-20 02:15:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:22,900 INFO L93 Difference]: Finished difference Result 2844 states and 4401 transitions. [2020-07-20 02:15:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:15:22,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 02:15:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:22,921 INFO L225 Difference]: With dead ends: 2844 [2020-07-20 02:15:22,922 INFO L226 Difference]: Without dead ends: 2425 [2020-07-20 02:15:22,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:15:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-07-20 02:15:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423. [2020-07-20 02:15:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-07-20 02:15:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions. [2020-07-20 02:15:23,026 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327 [2020-07-20 02:15:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:23,029 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions. [2020-07-20 02:15:23,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:15:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions. [2020-07-20 02:15:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:15:23,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:23,039 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 02:15:23,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 02:15:23,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times [2020-07-20 02:15:23,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:23,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812563258] [2020-07-20 02:15:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:15:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:24,110 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:15:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:24,238 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 02:15:24,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812563258] [2020-07-20 02:15:24,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:24,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:24,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116674244] [2020-07-20 02:15:24,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:24,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:24,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:24,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:24,252 INFO L87 Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 4 states. [2020-07-20 02:15:24,796 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-07-20 02:15:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:31,054 INFO L93 Difference]: Finished difference Result 5038 states and 7854 transitions. [2020-07-20 02:15:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:15:31,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 02:15:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:31,078 INFO L225 Difference]: With dead ends: 5038 [2020-07-20 02:15:31,078 INFO L226 Difference]: Without dead ends: 4361 [2020-07-20 02:15:31,082 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 02:15:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2020-07-20 02:15:31,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359. [2020-07-20 02:15:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-07-20 02:15:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions. [2020-07-20 02:15:31,224 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327 [2020-07-20 02:15:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:31,225 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions. [2020-07-20 02:15:31,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:15:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions. [2020-07-20 02:15:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:15:31,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:31,242 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 02:15:31,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 02:15:31,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:31,244 INFO L82 PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times [2020-07-20 02:15:31,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:31,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87349598] [2020-07-20 02:15:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:15:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:32,368 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:15:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:32,511 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 02:15:32,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87349598] [2020-07-20 02:15:32,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:32,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:15:32,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022257957] [2020-07-20 02:15:32,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:15:32,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:32,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:15:32,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:15:32,513 INFO L87 Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 5 states. [2020-07-20 02:15:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:41,960 INFO L93 Difference]: Finished difference Result 12898 states and 19904 transitions. [2020-07-20 02:15:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:15:41,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-07-20 02:15:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:42,003 INFO L225 Difference]: With dead ends: 12898 [2020-07-20 02:15:42,003 INFO L226 Difference]: Without dead ends: 8554 [2020-07-20 02:15:42,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:15:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8554 states. [2020-07-20 02:15:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8554 to 8347. [2020-07-20 02:15:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8347 states. [2020-07-20 02:15:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 12864 transitions. [2020-07-20 02:15:42,333 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 12864 transitions. Word has length 327 [2020-07-20 02:15:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:42,334 INFO L479 AbstractCegarLoop]: Abstraction has 8347 states and 12864 transitions. [2020-07-20 02:15:42,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:15:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 12864 transitions. [2020-07-20 02:15:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 02:15:42,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:42,354 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, 1] [2020-07-20 02:15:42,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 02:15:42,355 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:42,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash 318218777, now seen corresponding path program 1 times [2020-07-20 02:15:42,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:42,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205419107] [2020-07-20 02:15:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:15:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:43,332 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:15:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:43,463 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 02:15:43,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205419107] [2020-07-20 02:15:43,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:43,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:43,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763171589] [2020-07-20 02:15:43,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:43,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:43,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:43,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:43,466 INFO L87 Difference]: Start difference. First operand 8347 states and 12864 transitions. Second operand 4 states. [2020-07-20 02:15:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:54,365 INFO L93 Difference]: Finished difference Result 24596 states and 37840 transitions. [2020-07-20 02:15:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:15:54,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2020-07-20 02:15:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:54,424 INFO L225 Difference]: With dead ends: 24596 [2020-07-20 02:15:54,425 INFO L226 Difference]: Without dead ends: 16378 [2020-07-20 02:15:54,444 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 02:15:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16378 states. [2020-07-20 02:15:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16378 to 16171. [2020-07-20 02:15:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16171 states. [2020-07-20 02:15:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 24823 transitions. [2020-07-20 02:15:55,000 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 24823 transitions. Word has length 329 [2020-07-20 02:15:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:55,001 INFO L479 AbstractCegarLoop]: Abstraction has 16171 states and 24823 transitions. [2020-07-20 02:15:55,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:15:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 24823 transitions. [2020-07-20 02:15:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 02:15:55,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:55,035 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, 1] [2020-07-20 02:15:55,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 02:15:55,035 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:55,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1871319948, now seen corresponding path program 1 times [2020-07-20 02:15:55,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:55,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829601227] [2020-07-20 02:15:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:15:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:55,857 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:15:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:55,968 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 02:15:55,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829601227] [2020-07-20 02:15:55,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:55,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:55,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688450797] [2020-07-20 02:15:55,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:55,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:55,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:55,973 INFO L87 Difference]: Start difference. First operand 16171 states and 24823 transitions. Second operand 4 states. [2020-07-20 02:16:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:07,372 INFO L93 Difference]: Finished difference Result 48438 states and 74345 transitions. [2020-07-20 02:16:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:16:07,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2020-07-20 02:16:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:07,451 INFO L225 Difference]: With dead ends: 48438 [2020-07-20 02:16:07,452 INFO L226 Difference]: Without dead ends: 32309 [2020-07-20 02:16:07,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:16:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32309 states. [2020-07-20 02:16:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32309 to 16190. [2020-07-20 02:16:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16190 states. [2020-07-20 02:16:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16190 states to 16190 states and 24851 transitions. [2020-07-20 02:16:08,072 INFO L78 Accepts]: Start accepts. Automaton has 16190 states and 24851 transitions. Word has length 329 [2020-07-20 02:16:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:08,072 INFO L479 AbstractCegarLoop]: Abstraction has 16190 states and 24851 transitions. [2020-07-20 02:16:08,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:16:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 16190 states and 24851 transitions. [2020-07-20 02:16:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 02:16:08,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:08,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:16:08,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 02:16:08,099 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1567258959, now seen corresponding path program 1 times [2020-07-20 02:16:08,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:08,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460399011] [2020-07-20 02:16:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:16:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:08,718 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:16:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:08,813 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 02:16:08,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460399011] [2020-07-20 02:16:08,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:08,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:16:08,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366670511] [2020-07-20 02:16:08,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:16:08,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:16:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:16:08,816 INFO L87 Difference]: Start difference. First operand 16190 states and 24851 transitions. Second operand 4 states. [2020-07-20 02:16:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:21,001 INFO L93 Difference]: Finished difference Result 48457 states and 74366 transitions. [2020-07-20 02:16:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:16:21,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 02:16:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:21,074 INFO L225 Difference]: With dead ends: 48457 [2020-07-20 02:16:21,074 INFO L226 Difference]: Without dead ends: 32327 [2020-07-20 02:16:21,105 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 02:16:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32327 states. [2020-07-20 02:16:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32327 to 16208. [2020-07-20 02:16:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16208 states. [2020-07-20 02:16:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16208 states to 16208 states and 24872 transitions. [2020-07-20 02:16:21,683 INFO L78 Accepts]: Start accepts. Automaton has 16208 states and 24872 transitions. Word has length 330 [2020-07-20 02:16:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:21,683 INFO L479 AbstractCegarLoop]: Abstraction has 16208 states and 24872 transitions. [2020-07-20 02:16:21,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:16:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16208 states and 24872 transitions. [2020-07-20 02:16:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 02:16:21,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:21,708 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, 1, 1, 1] [2020-07-20 02:16:21,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 02:16:21,709 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1372001314, now seen corresponding path program 1 times [2020-07-20 02:16:21,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:21,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87856928] [2020-07-20 02:16:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:16:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:22,470 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:16:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:22,837 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 02:16:22,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87856928] [2020-07-20 02:16:22,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:22,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:16:22,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426029093] [2020-07-20 02:16:22,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:16:22,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:22,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:16:22,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:16:22,840 INFO L87 Difference]: Start difference. First operand 16208 states and 24872 transitions. Second operand 4 states. [2020-07-20 02:16:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:34,708 INFO L93 Difference]: Finished difference Result 47657 states and 72993 transitions. [2020-07-20 02:16:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:16:34,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-20 02:16:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:34,760 INFO L225 Difference]: With dead ends: 47657 [2020-07-20 02:16:34,761 INFO L226 Difference]: Without dead ends: 31694 [2020-07-20 02:16:34,790 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 02:16:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31694 states. [2020-07-20 02:16:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31694 to 31487. [2020-07-20 02:16:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31487 states. [2020-07-20 02:16:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31487 states to 31487 states and 48052 transitions. [2020-07-20 02:16:35,708 INFO L78 Accepts]: Start accepts. Automaton has 31487 states and 48052 transitions. Word has length 331 [2020-07-20 02:16:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:35,708 INFO L479 AbstractCegarLoop]: Abstraction has 31487 states and 48052 transitions. [2020-07-20 02:16:35,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:16:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 31487 states and 48052 transitions. [2020-07-20 02:16:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 02:16:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:35,735 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, 1, 1, 1] [2020-07-20 02:16:35,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 02:16:35,736 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1276054559, now seen corresponding path program 1 times [2020-07-20 02:16:35,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:35,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955375237] [2020-07-20 02:16:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:16:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:36,602 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:16:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:36,910 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 02:16:36,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955375237] [2020-07-20 02:16:36,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:36,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:16:36,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725500427] [2020-07-20 02:16:36,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:16:36,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:36,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:16:36,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:16:36,912 INFO L87 Difference]: Start difference. First operand 31487 states and 48052 transitions. Second operand 5 states. [2020-07-20 02:16:45,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:45,470 INFO L93 Difference]: Finished difference Result 64556 states and 98457 transitions. [2020-07-20 02:16:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:16:45,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-07-20 02:16:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:45,514 INFO L225 Difference]: With dead ends: 64556 [2020-07-20 02:16:45,514 INFO L226 Difference]: Without dead ends: 32561 [2020-07-20 02:16:45,551 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 02:16:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32561 states. [2020-07-20 02:16:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32561 to 32354. [2020-07-20 02:16:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32354 states. [2020-07-20 02:16:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32354 states to 32354 states and 49170 transitions. [2020-07-20 02:16:46,884 INFO L78 Accepts]: Start accepts. Automaton has 32354 states and 49170 transitions. Word has length 331 [2020-07-20 02:16:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:46,884 INFO L479 AbstractCegarLoop]: Abstraction has 32354 states and 49170 transitions. [2020-07-20 02:16:46,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:16:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 32354 states and 49170 transitions. [2020-07-20 02:16:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:16:46,907 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:46,907 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, 1, 1, 1, 1, 1] [2020-07-20 02:16:46,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 02:16:46,907 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1240087947, now seen corresponding path program 1 times [2020-07-20 02:16:46,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:46,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495164769] [2020-07-20 02:16:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:16:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:47,588 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:16:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:47,701 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 02:16:47,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495164769] [2020-07-20 02:16:47,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:47,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:16:47,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705248179] [2020-07-20 02:16:47,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:16:47,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:47,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:16:47,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:16:47,704 INFO L87 Difference]: Start difference. First operand 32354 states and 49170 transitions. Second operand 4 states. [2020-07-20 02:16:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:56,306 INFO L93 Difference]: Finished difference Result 96190 states and 146033 transitions. [2020-07-20 02:16:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:16:56,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 02:16:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:56,382 INFO L225 Difference]: With dead ends: 96190 [2020-07-20 02:16:56,382 INFO L226 Difference]: Without dead ends: 64289 [2020-07-20 02:16:56,433 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 02:16:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64289 states. [2020-07-20 02:16:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64289 to 32412. [2020-07-20 02:16:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32412 states. [2020-07-20 02:16:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32412 states to 32412 states and 49245 transitions. [2020-07-20 02:16:59,074 INFO L78 Accepts]: Start accepts. Automaton has 32412 states and 49245 transitions. Word has length 333 [2020-07-20 02:16:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:59,075 INFO L479 AbstractCegarLoop]: Abstraction has 32412 states and 49245 transitions. [2020-07-20 02:16:59,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:16:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 32412 states and 49245 transitions. [2020-07-20 02:16:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:16:59,100 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:59,100 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, 1, 1, 1, 1, 1] [2020-07-20 02:16:59,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 02:16:59,101 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:59,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:59,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1927314311, now seen corresponding path program 1 times [2020-07-20 02:16:59,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:59,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69692071] [2020-07-20 02:16:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:16:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:00,027 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:17:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:00,384 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 02:17:00,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69692071] [2020-07-20 02:17:00,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:17:00,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:17:00,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328899583] [2020-07-20 02:17:00,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:17:00,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:17:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:17:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:17:00,387 INFO L87 Difference]: Start difference. First operand 32412 states and 49245 transitions. Second operand 5 states. [2020-07-20 02:17:18,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:17:18,419 INFO L93 Difference]: Finished difference Result 119792 states and 181623 transitions. [2020-07-20 02:17:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:17:18,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-07-20 02:17:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:17:18,526 INFO L225 Difference]: With dead ends: 119792 [2020-07-20 02:17:18,527 INFO L226 Difference]: Without dead ends: 88207 [2020-07-20 02:17:18,565 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 02:17:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88207 states. [2020-07-20 02:17:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88207 to 32661. [2020-07-20 02:17:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32661 states. [2020-07-20 02:17:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32661 states to 32661 states and 49637 transitions. [2020-07-20 02:17:20,407 INFO L78 Accepts]: Start accepts. Automaton has 32661 states and 49637 transitions. Word has length 333 [2020-07-20 02:17:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:17:20,407 INFO L479 AbstractCegarLoop]: Abstraction has 32661 states and 49637 transitions. [2020-07-20 02:17:20,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:17:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 32661 states and 49637 transitions. [2020-07-20 02:17:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:17:20,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:17:20,434 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, 1, 1, 1, 1, 1] [2020-07-20 02:17:20,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 02:17:20,434 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:17:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:17:20,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1238335886, now seen corresponding path program 1 times [2020-07-20 02:17:20,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:17:20,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318983735] [2020-07-20 02:17:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:17:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:21,152 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:17:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:21,264 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 02:17:21,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318983735] [2020-07-20 02:17:21,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:17:21,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:17:21,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599202557] [2020-07-20 02:17:21,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:17:21,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:17:21,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:17:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:17:21,268 INFO L87 Difference]: Start difference. First operand 32661 states and 49637 transitions. Second operand 4 states. [2020-07-20 02:17:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:17:31,565 INFO L93 Difference]: Finished difference Result 81798 states and 125255 transitions. [2020-07-20 02:17:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:17:31,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 02:17:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:17:31,630 INFO L225 Difference]: With dead ends: 81798 [2020-07-20 02:17:31,630 INFO L226 Difference]: Without dead ends: 51671 [2020-07-20 02:17:31,661 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 02:17:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51671 states. [2020-07-20 02:17:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51671 to 40853. [2020-07-20 02:17:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40853 states. [2020-07-20 02:17:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40853 states to 40853 states and 63079 transitions. [2020-07-20 02:17:33,774 INFO L78 Accepts]: Start accepts. Automaton has 40853 states and 63079 transitions. Word has length 333 [2020-07-20 02:17:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:17:33,774 INFO L479 AbstractCegarLoop]: Abstraction has 40853 states and 63079 transitions. [2020-07-20 02:17:33,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:17:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 40853 states and 63079 transitions. [2020-07-20 02:17:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 02:17:33,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:17:33,796 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:17:33,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 02:17:33,797 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:17:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:17:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1655619516, now seen corresponding path program 1 times [2020-07-20 02:17:33,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:17:33,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495137620] [2020-07-20 02:17:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:17:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:34,671 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:17:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:34,831 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 02:17:34,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495137620] [2020-07-20 02:17:34,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:17:34,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:17:34,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126805933] [2020-07-20 02:17:34,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:17:34,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:17:34,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:17:34,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:17:34,834 INFO L87 Difference]: Start difference. First operand 40853 states and 63079 transitions. Second operand 4 states. [2020-07-20 02:17:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:17:47,071 INFO L93 Difference]: Finished difference Result 102490 states and 159469 transitions. [2020-07-20 02:17:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:17:47,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-20 02:17:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:17:47,176 INFO L225 Difference]: With dead ends: 102490 [2020-07-20 02:17:47,177 INFO L226 Difference]: Without dead ends: 64639 [2020-07-20 02:17:47,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:17:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64639 states. [2020-07-20 02:17:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64639 to 55509. [2020-07-20 02:17:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55509 states. [2020-07-20 02:17:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55509 states to 55509 states and 86991 transitions. [2020-07-20 02:17:50,065 INFO L78 Accepts]: Start accepts. Automaton has 55509 states and 86991 transitions. Word has length 335 [2020-07-20 02:17:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:17:50,066 INFO L479 AbstractCegarLoop]: Abstraction has 55509 states and 86991 transitions. [2020-07-20 02:17:50,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:17:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 55509 states and 86991 transitions. [2020-07-20 02:17:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 02:17:50,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:17:50,087 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:17:50,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 02:17:50,087 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:17:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:17:50,088 INFO L82 PathProgramCache]: Analyzing trace with hash -846909920, now seen corresponding path program 1 times [2020-07-20 02:17:50,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:17:50,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346105857] [2020-07-20 02:17:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:17:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:50,752 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:17:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:50,831 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 02:17:50,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346105857] [2020-07-20 02:17:50,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:17:50,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:17:50,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277177149] [2020-07-20 02:17:50,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:17:50,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:17:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:17:50,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:17:50,833 INFO L87 Difference]: Start difference. First operand 55509 states and 86991 transitions. Second operand 4 states. [2020-07-20 02:18:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:18:08,528 INFO L93 Difference]: Finished difference Result 164121 states and 256973 transitions. [2020-07-20 02:18:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:18:08,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-20 02:18:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:18:08,684 INFO L225 Difference]: With dead ends: 164121 [2020-07-20 02:18:08,684 INFO L226 Difference]: Without dead ends: 109760 [2020-07-20 02:18:08,746 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 02:18:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109760 states. [2020-07-20 02:18:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109760 to 55607. [2020-07-20 02:18:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55607 states. [2020-07-20 02:18:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55607 states to 55607 states and 87127 transitions. [2020-07-20 02:18:12,248 INFO L78 Accepts]: Start accepts. Automaton has 55607 states and 87127 transitions. Word has length 335 [2020-07-20 02:18:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:18:12,248 INFO L479 AbstractCegarLoop]: Abstraction has 55607 states and 87127 transitions. [2020-07-20 02:18:12,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:18:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 55607 states and 87127 transitions. [2020-07-20 02:18:12,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 02:18:12,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:18:12,269 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:18:12,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 02:18:12,269 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:18:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:18:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2051963875, now seen corresponding path program 1 times [2020-07-20 02:18:12,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:18:12,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939023459] [2020-07-20 02:18:12,270 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:18:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:12,914 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:18:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:13,020 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 02:18:13,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939023459] [2020-07-20 02:18:13,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:18:13,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:18:13,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089817555] [2020-07-20 02:18:13,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:18:13,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:18:13,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:18:13,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:18:13,023 INFO L87 Difference]: Start difference. First operand 55607 states and 87127 transitions. Second operand 4 states. [2020-07-20 02:18:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:18:31,596 INFO L93 Difference]: Finished difference Result 164377 states and 257303 transitions. [2020-07-20 02:18:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:18:31,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 02:18:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:18:31,733 INFO L225 Difference]: With dead ends: 164377 [2020-07-20 02:18:31,734 INFO L226 Difference]: Without dead ends: 110016 [2020-07-20 02:18:31,784 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 02:18:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110016 states. [2020-07-20 02:18:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110016 to 55715. [2020-07-20 02:18:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55715 states. [2020-07-20 02:18:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55715 states to 55715 states and 87239 transitions. [2020-07-20 02:18:35,289 INFO L78 Accepts]: Start accepts. Automaton has 55715 states and 87239 transitions. Word has length 336 [2020-07-20 02:18:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:18:35,289 INFO L479 AbstractCegarLoop]: Abstraction has 55715 states and 87239 transitions. [2020-07-20 02:18:35,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:18:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 55715 states and 87239 transitions. [2020-07-20 02:18:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 02:18:35,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:18:35,310 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:18:35,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 02:18:35,310 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:18:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:18:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1325903080, now seen corresponding path program 1 times [2020-07-20 02:18:35,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:18:35,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562875068] [2020-07-20 02:18:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:18:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:36,015 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:18:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:18:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562875068] [2020-07-20 02:18:36,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:18:36,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:18:36,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069558503] [2020-07-20 02:18:36,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 02:18:36,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:18:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 02:18:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:18:36,125 INFO L87 Difference]: Start difference. First operand 55715 states and 87239 transitions. Second operand 6 states. [2020-07-20 02:18:36,784 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-07-20 02:18:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:18:47,909 INFO L93 Difference]: Finished difference Result 108714 states and 170358 transitions. [2020-07-20 02:18:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 02:18:47,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 336 [2020-07-20 02:18:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:18:47,982 INFO L225 Difference]: With dead ends: 108714 [2020-07-20 02:18:47,983 INFO L226 Difference]: Without dead ends: 55715 [2020-07-20 02:18:48,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:18:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55715 states. [2020-07-20 02:18:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55715 to 55715. [2020-07-20 02:18:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55715 states. [2020-07-20 02:18:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55715 states to 55715 states and 86569 transitions. [2020-07-20 02:18:51,475 INFO L78 Accepts]: Start accepts. Automaton has 55715 states and 86569 transitions. Word has length 336 [2020-07-20 02:18:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:18:51,475 INFO L479 AbstractCegarLoop]: Abstraction has 55715 states and 86569 transitions. [2020-07-20 02:18:51,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 02:18:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 55715 states and 86569 transitions. [2020-07-20 02:18:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 02:18:51,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:18:51,497 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:18:51,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 02:18:51,497 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:18:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:18:51,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1613957357, now seen corresponding path program 1 times [2020-07-20 02:18:51,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:18:51,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875500940] [2020-07-20 02:18:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:18:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:52,342 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:18:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:52,498 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 02:18:52,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875500940] [2020-07-20 02:18:52,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:18:52,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 02:18:52,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511858434] [2020-07-20 02:18:52,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 02:18:52,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:18:52,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 02:18:52,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:18:52,500 INFO L87 Difference]: Start difference. First operand 55715 states and 86569 transitions. Second operand 9 states. [2020-07-20 02:18:53,149 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-07-20 02:19:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:19:11,979 INFO L93 Difference]: Finished difference Result 164828 states and 256932 transitions. [2020-07-20 02:19:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 02:19:11,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 336 [2020-07-20 02:19:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:19:12,133 INFO L225 Difference]: With dead ends: 164828 [2020-07-20 02:19:12,134 INFO L226 Difference]: Without dead ends: 112045 [2020-07-20 02:19:12,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-07-20 02:19:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112045 states. [2020-07-20 02:19:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112045 to 72683. [2020-07-20 02:19:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72683 states. [2020-07-20 02:19:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72683 states to 72683 states and 110493 transitions. [2020-07-20 02:19:17,691 INFO L78 Accepts]: Start accepts. Automaton has 72683 states and 110493 transitions. Word has length 336 [2020-07-20 02:19:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:19:17,692 INFO L479 AbstractCegarLoop]: Abstraction has 72683 states and 110493 transitions. [2020-07-20 02:19:17,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 02:19:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 72683 states and 110493 transitions. [2020-07-20 02:19:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 02:19:17,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:19:17,722 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:19:17,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 02:19:17,722 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:19:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:19:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash -301490402, now seen corresponding path program 1 times [2020-07-20 02:19:17,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:19:17,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232258018] [2020-07-20 02:19:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:19:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:19:18,859 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:19:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:19:18,978 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 02:19:18,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232258018] [2020-07-20 02:19:18,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:19:18,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:19:18,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574145899] [2020-07-20 02:19:18,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:19:18,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:19:18,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:19:18,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:19:18,981 INFO L87 Difference]: Start difference. First operand 72683 states and 110493 transitions. Second operand 5 states. [2020-07-20 02:19:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:19:41,622 INFO L93 Difference]: Finished difference Result 214089 states and 325687 transitions. [2020-07-20 02:19:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:19:41,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-07-20 02:19:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:19:41,808 INFO L225 Difference]: With dead ends: 214089 [2020-07-20 02:19:41,808 INFO L226 Difference]: Without dead ends: 141748 [2020-07-20 02:19:41,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:19:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141748 states. [2020-07-20 02:19:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141748 to 141557. [2020-07-20 02:19:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141557 states. [2020-07-20 02:19:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141557 states to 141557 states and 214601 transitions. [2020-07-20 02:19:54,904 INFO L78 Accepts]: Start accepts. Automaton has 141557 states and 214601 transitions. Word has length 336 [2020-07-20 02:19:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:19:54,904 INFO L479 AbstractCegarLoop]: Abstraction has 141557 states and 214601 transitions. [2020-07-20 02:19:54,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:19:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 141557 states and 214601 transitions. [2020-07-20 02:19:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 02:19:54,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:19:54,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:19:54,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 02:19:54,959 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:19:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:19:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1521744755, now seen corresponding path program 1 times [2020-07-20 02:19:54,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:19:54,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6782510] [2020-07-20 02:19:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:19:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:19:55,908 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:19:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:19:56,441 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 02:19:56,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6782510] [2020-07-20 02:19:56,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:19:56,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:19:56,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707660855] [2020-07-20 02:19:56,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:19:56,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:19:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:19:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:19:56,443 INFO L87 Difference]: Start difference. First operand 141557 states and 214601 transitions. Second operand 5 states. [2020-07-20 02:20:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:20:19,243 INFO L93 Difference]: Finished difference Result 210385 states and 318804 transitions. [2020-07-20 02:20:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:20:19,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-07-20 02:20:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:20:19,432 INFO L225 Difference]: With dead ends: 210385 [2020-07-20 02:20:19,432 INFO L226 Difference]: Without dead ends: 141776 [2020-07-20 02:20:19,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:20:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141776 states. [2020-07-20 02:20:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141776 to 140007. [2020-07-20 02:20:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140007 states. [2020-07-20 02:20:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140007 states to 140007 states and 212348 transitions. [2020-07-20 02:20:33,481 INFO L78 Accepts]: Start accepts. Automaton has 140007 states and 212348 transitions. Word has length 337 [2020-07-20 02:20:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:20:33,481 INFO L479 AbstractCegarLoop]: Abstraction has 140007 states and 212348 transitions. [2020-07-20 02:20:33,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:20:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 140007 states and 212348 transitions. [2020-07-20 02:20:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 02:20:33,536 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:20:33,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:20:33,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 02:20:33,536 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:20:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:20:33,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1681776216, now seen corresponding path program 1 times [2020-07-20 02:20:33,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:20:33,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269060025] [2020-07-20 02:20:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:20:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:34,193 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:20:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:34,259 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 02:20:34,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269060025] [2020-07-20 02:20:34,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:20:34,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:20:34,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602596548] [2020-07-20 02:20:34,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:20:34,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:20:34,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:20:34,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:20:34,261 INFO L87 Difference]: Start difference. First operand 140007 states and 212348 transitions. Second operand 4 states. [2020-07-20 02:21:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:21:12,104 INFO L93 Difference]: Finished difference Result 418677 states and 634855 transitions. [2020-07-20 02:21:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:21:12,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-20 02:21:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:21:12,527 INFO L225 Difference]: With dead ends: 418677 [2020-07-20 02:21:12,528 INFO L226 Difference]: Without dead ends: 279360 [2020-07-20 02:21:12,671 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 02:21:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279360 states. [2020-07-20 02:21:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279360 to 140145. [2020-07-20 02:21:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140145 states. [2020-07-20 02:21:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140145 states to 140145 states and 212500 transitions. [2020-07-20 02:21:25,516 INFO L78 Accepts]: Start accepts. Automaton has 140145 states and 212500 transitions. Word has length 340 [2020-07-20 02:21:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:21:25,516 INFO L479 AbstractCegarLoop]: Abstraction has 140145 states and 212500 transitions. [2020-07-20 02:21:25,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:21:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 140145 states and 212500 transitions. [2020-07-20 02:21:25,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 02:21:25,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:21:25,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:21:25,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 02:21:25,578 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:21:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:21:25,578 INFO L82 PathProgramCache]: Analyzing trace with hash 19768850, now seen corresponding path program 1 times [2020-07-20 02:21:25,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:21:25,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502152023] [2020-07-20 02:21:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:21:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:26,309 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:21:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:26,409 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 02:21:26,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502152023] [2020-07-20 02:21:26,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:21:26,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:21:26,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143519121] [2020-07-20 02:21:26,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:21:26,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:21:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:21:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:21:26,411 INFO L87 Difference]: Start difference. First operand 140145 states and 212500 transitions. Second operand 4 states. [2020-07-20 02:22:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:22:03,957 INFO L93 Difference]: Finished difference Result 411893 states and 624614 transitions. [2020-07-20 02:22:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:22:03,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-20 02:22:03,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:22:04,334 INFO L225 Difference]: With dead ends: 411893 [2020-07-20 02:22:04,335 INFO L226 Difference]: Without dead ends: 273579 [2020-07-20 02:22:04,452 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 02:22:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273579 states. [2020-07-20 02:22:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273579 to 273396. [2020-07-20 02:22:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273396 states. [2020-07-20 02:22:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273396 states to 273396 states and 413005 transitions. [2020-07-20 02:22:32,832 INFO L78 Accepts]: Start accepts. Automaton has 273396 states and 413005 transitions. Word has length 340 [2020-07-20 02:22:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:22:32,832 INFO L479 AbstractCegarLoop]: Abstraction has 273396 states and 413005 transitions. [2020-07-20 02:22:32,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:22:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 273396 states and 413005 transitions. [2020-07-20 02:22:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 02:22:32,943 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:22:32,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:22:32,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 02:22:32,943 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:22:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:22:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1028603420, now seen corresponding path program 1 times [2020-07-20 02:22:32,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:22:32,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874260975] [2020-07-20 02:22:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:22:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:22:33,761 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:22:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:22:33,834 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 02:22:33,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874260975] [2020-07-20 02:22:33,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:22:33,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:22:33,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128370700] [2020-07-20 02:22:33,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:22:33,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:22:33,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:22:33,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:22:33,836 INFO L87 Difference]: Start difference. First operand 273396 states and 413005 transitions. Second operand 5 states. [2020-07-20 02:23:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:23:13,185 INFO L93 Difference]: Finished difference Result 552601 states and 834095 transitions. [2020-07-20 02:23:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:23:13,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-07-20 02:23:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:23:13,607 INFO L225 Difference]: With dead ends: 552601 [2020-07-20 02:23:13,607 INFO L226 Difference]: Without dead ends: 277360 [2020-07-20 02:23:13,785 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 02:23:13,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277360 states. [2020-07-20 02:23:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277360 to 277109. [2020-07-20 02:23:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277109 states. [2020-07-20 02:23:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277109 states to 277109 states and 416222 transitions. [2020-07-20 02:23:43,870 INFO L78 Accepts]: Start accepts. Automaton has 277109 states and 416222 transitions. Word has length 341 [2020-07-20 02:23:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:23:43,870 INFO L479 AbstractCegarLoop]: Abstraction has 277109 states and 416222 transitions. [2020-07-20 02:23:43,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:23:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 277109 states and 416222 transitions. [2020-07-20 02:23:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-20 02:23:43,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:23:43,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:23:43,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-20 02:23:43,986 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:23:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:23:43,987 INFO L82 PathProgramCache]: Analyzing trace with hash 39063962, now seen corresponding path program 1 times [2020-07-20 02:23:43,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:23:43,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327748437] [2020-07-20 02:23:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:23:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:23:44,706 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:23:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:23:44,804 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 02:23:44,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327748437] [2020-07-20 02:23:44,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:23:44,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:23:44,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704290236] [2020-07-20 02:23:44,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:23:44,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:23:44,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:23:44,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:23:44,806 INFO L87 Difference]: Start difference. First operand 277109 states and 416222 transitions. Second operand 4 states. [2020-07-20 02:24:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:51,799 INFO L93 Difference]: Finished difference Result 803777 states and 1206515 transitions. [2020-07-20 02:24:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:24:51,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2020-07-20 02:24:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:52,680 INFO L225 Difference]: With dead ends: 803777 [2020-07-20 02:24:52,680 INFO L226 Difference]: Without dead ends: 528345 [2020-07-20 02:24:53,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:24:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528345 states. [2020-07-20 02:25:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528345 to 528234. [2020-07-20 02:25:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528234 states. [2020-07-20 02:25:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528234 states to 528234 states and 788166 transitions. [2020-07-20 02:25:56,013 INFO L78 Accepts]: Start accepts. Automaton has 528234 states and 788166 transitions. Word has length 342 [2020-07-20 02:25:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:25:56,014 INFO L479 AbstractCegarLoop]: Abstraction has 528234 states and 788166 transitions. [2020-07-20 02:25:56,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:25:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 528234 states and 788166 transitions. [2020-07-20 02:25:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-20 02:25:56,258 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:25:56,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 02:25:56,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-20 02:25:56,258 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:25:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:25:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2088068717, now seen corresponding path program 1 times [2020-07-20 02:25:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:25:56,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058534666] [2020-07-20 02:25:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@342eefbf [2020-07-20 02:25:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:25:56,989 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 02:25:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:25:57,098 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 02:25:57,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058534666] [2020-07-20 02:25:57,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:25:57,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:25:57,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265034639] [2020-07-20 02:25:57,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:25:57,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:25:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:25:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:25:57,099 INFO L87 Difference]: Start difference. First operand 528234 states and 788166 transitions. Second operand 4 states.