/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:39:15,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:39:15,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:39:15,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:39:15,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:39:15,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:39:15,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:39:15,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:39:15,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:39:15,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:39:15,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:39:15,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:39:15,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:39:15,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:39:15,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:39:15,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:39:15,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:39:15,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:39:15,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:39:15,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:39:15,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:39:15,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:39:15,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:39:15,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:39:15,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:39:15,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:39:15,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:39:15,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:39:15,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:39:15,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:39:15,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:39:15,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:39:15,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:39:15,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:39:15,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:39:15,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:39:15,440 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 [2020-07-07 11:39:15,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:39:15,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:39:15,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:39:15,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:39:15,459 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:39:15,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:39:15,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:39:15,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:39:15,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:39:15,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:39:15,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:39:15,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:39:15,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:39:15,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:39:15,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:39:15,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:39:15,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:39:15,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:39:15,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:39:15,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:39:15,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:39:15,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:39:15,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:39:15,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:39:15,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:39:15,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:39:15,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:39:15,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:39:15,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:39:15,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:39:15,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:39:15,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:39:15,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:39:15,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:39:15,850 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:39:15,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-07 11:39:15,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a524067c/debe6fa35b894694ba8e5eb0c31d08bb/FLAG9be313c8a [2020-07-07 11:39:16,940 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:39:16,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-07 11:39:16,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a524067c/debe6fa35b894694ba8e5eb0c31d08bb/FLAG9be313c8a [2020-07-07 11:39:17,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a524067c/debe6fa35b894694ba8e5eb0c31d08bb [2020-07-07 11:39:17,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:39:17,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:39:17,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:39:17,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:39:17,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:39:17,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:39:17" (1/1) ... [2020-07-07 11:39:17,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9acad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:17, skipping insertion in model container [2020-07-07 11:39:17,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:39:17" (1/1) ... [2020-07-07 11:39:17,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:39:17,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:39:20,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:39:20,185 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:39:22,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:39:22,252 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:39:22,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22 WrapperNode [2020-07-07 11:39:22,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:39:22,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:39:22,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:39:22,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:39:22,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (1/1) ... [2020-07-07 11:39:22,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:39:22,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:39:22,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:39:22,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:39:22,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (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 [2020-07-07 11:39:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:39:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:39:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:39:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:39:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:39:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 11:39:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 11:39:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-07 11:39:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:39:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:39:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-07 11:39:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-07 11:39:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-07 11:39:22,629 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-07 11:39:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-07 11:39:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-07 11:39:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-07 11:39:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-07 11:39:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 11:39:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:39:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:39:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:39:29,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:39:29,294 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:39:29,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:39:29 BoogieIcfgContainer [2020-07-07 11:39:29,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:39:29,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:39:29,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:39:29,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:39:29,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:39:17" (1/3) ... [2020-07-07 11:39:29,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d50f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:39:29, skipping insertion in model container [2020-07-07 11:39:29,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:39:22" (2/3) ... [2020-07-07 11:39:29,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d50f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:39:29, skipping insertion in model container [2020-07-07 11:39:29,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:39:29" (3/3) ... [2020-07-07 11:39:29,325 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-07 11:39:29,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:39:29,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-07 11:39:29,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-07 11:39:29,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:39:29,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:39:29,417 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:39:29,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:39:29,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:39:29,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:39:29,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:39:29,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:39:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states. [2020-07-07 11:39:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-07-07 11:39:29,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:39:29,509 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] [2020-07-07 11:39:29,510 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:39:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:39:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -2040294362, now seen corresponding path program 1 times [2020-07-07 11:39:29,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:39:29,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579234053] [2020-07-07 11:39:29,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:39:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:31,638 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:39:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:39:31,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579234053] [2020-07-07 11:39:31,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:39:31,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:39:31,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410764178] [2020-07-07 11:39:31,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:39:31,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:39:31,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:39:31,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:39:31,831 INFO L87 Difference]: Start difference. First operand 2249 states. Second operand 5 states. [2020-07-07 11:39:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:39:50,123 INFO L93 Difference]: Finished difference Result 3956 states and 6884 transitions. [2020-07-07 11:39:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:39:50,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-07-07 11:39:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:39:50,192 INFO L225 Difference]: With dead ends: 3956 [2020-07-07 11:39:50,193 INFO L226 Difference]: Without dead ends: 2245 [2020-07-07 11:39:50,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:39:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-07-07 11:39:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-07-07 11:39:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-07-07 11:39:50,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3871 transitions. [2020-07-07 11:39:50,489 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3871 transitions. Word has length 290 [2020-07-07 11:39:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:39:50,493 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 3871 transitions. [2020-07-07 11:39:50,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:39:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3871 transitions. [2020-07-07 11:39:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-07 11:39:50,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:39:50,520 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:39:50,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:39:50,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:39:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:39:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash -875879150, now seen corresponding path program 1 times [2020-07-07 11:39:50,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:39:50,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576222465] [2020-07-07 11:39:50,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:39:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:51,884 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:39:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:39:52,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576222465] [2020-07-07 11:39:52,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:39:52,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:39:52,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721225330] [2020-07-07 11:39:52,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:39:52,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:39:52,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:39:52,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:39:52,094 INFO L87 Difference]: Start difference. First operand 2245 states and 3871 transitions. Second operand 4 states. [2020-07-07 11:39:52,872 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-07 11:40:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:40:20,499 INFO L93 Difference]: Finished difference Result 5464 states and 9356 transitions. [2020-07-07 11:40:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:40:20,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-07-07 11:40:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:40:20,526 INFO L225 Difference]: With dead ends: 5464 [2020-07-07 11:40:20,526 INFO L226 Difference]: Without dead ends: 3801 [2020-07-07 11:40:20,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:40:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-07-07 11:40:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3797. [2020-07-07 11:40:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-07-07 11:40:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6464 transitions. [2020-07-07 11:40:20,657 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6464 transitions. Word has length 349 [2020-07-07 11:40:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:40:20,658 INFO L479 AbstractCegarLoop]: Abstraction has 3797 states and 6464 transitions. [2020-07-07 11:40:20,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:40:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6464 transitions. [2020-07-07 11:40:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-07 11:40:20,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:40:20,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:40:20,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:40:20,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:40:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:40:20,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1287553668, now seen corresponding path program 1 times [2020-07-07 11:40:20,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:40:20,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647734472] [2020-07-07 11:40:20,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:40:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:21,797 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:40:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:40:21,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647734472] [2020-07-07 11:40:21,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:40:21,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:40:21,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887254304] [2020-07-07 11:40:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:40:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:40:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:40:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:40:21,985 INFO L87 Difference]: Start difference. First operand 3797 states and 6464 transitions. Second operand 4 states. [2020-07-07 11:40:22,784 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-07 11:40:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:40:47,992 INFO L93 Difference]: Finished difference Result 6370 states and 10871 transitions. [2020-07-07 11:40:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:40:47,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2020-07-07 11:40:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:40:48,022 INFO L225 Difference]: With dead ends: 6370 [2020-07-07 11:40:48,022 INFO L226 Difference]: Without dead ends: 4697 [2020-07-07 11:40:48,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:40:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-07-07 11:40:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4693. [2020-07-07 11:40:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-07-07 11:40:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7996 transitions. [2020-07-07 11:40:48,192 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7996 transitions. Word has length 353 [2020-07-07 11:40:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:40:48,194 INFO L479 AbstractCegarLoop]: Abstraction has 4693 states and 7996 transitions. [2020-07-07 11:40:48,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:40:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7996 transitions. [2020-07-07 11:40:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-07-07 11:40:48,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:40:48,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:40:48,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:40:48,214 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:40:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:40:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1465097905, now seen corresponding path program 1 times [2020-07-07 11:40:48,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:40:48,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551175151] [2020-07-07 11:40:48,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:40:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:49,440 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:40:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:40:49,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551175151] [2020-07-07 11:40:49,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:40:49,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:40:49,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233940080] [2020-07-07 11:40:49,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:40:49,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:40:49,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:40:49,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:40:49,602 INFO L87 Difference]: Start difference. First operand 4693 states and 7996 transitions. Second operand 4 states. [2020-07-07 11:40:50,419 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-07 11:41:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:41:17,273 INFO L93 Difference]: Finished difference Result 12615 states and 21382 transitions. [2020-07-07 11:41:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:41:17,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2020-07-07 11:41:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:41:17,318 INFO L225 Difference]: With dead ends: 12615 [2020-07-07 11:41:17,318 INFO L226 Difference]: Without dead ends: 8527 [2020-07-07 11:41:17,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:41:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8527 states. [2020-07-07 11:41:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8527 to 8523. [2020-07-07 11:41:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8523 states. [2020-07-07 11:41:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 14421 transitions. [2020-07-07 11:41:17,664 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 14421 transitions. Word has length 357 [2020-07-07 11:41:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:41:17,665 INFO L479 AbstractCegarLoop]: Abstraction has 8523 states and 14421 transitions. [2020-07-07 11:41:17,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:41:17,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 14421 transitions. [2020-07-07 11:41:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-07 11:41:17,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:41:17,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:41:17,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:41:17,697 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:41:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:41:17,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1576454873, now seen corresponding path program 1 times [2020-07-07 11:41:17,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:41:17,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263449540] [2020-07-07 11:41:17,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:41:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:18,903 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:41:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:41:19,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263449540] [2020-07-07 11:41:19,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:41:19,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:41:19,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807431292] [2020-07-07 11:41:19,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:41:19,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:41:19,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:41:19,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:41:19,159 INFO L87 Difference]: Start difference. First operand 8523 states and 14421 transitions. Second operand 4 states. [2020-07-07 11:41:20,000 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-07 11:41:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:41:47,696 INFO L93 Difference]: Finished difference Result 15288 states and 25910 transitions. [2020-07-07 11:41:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:41:47,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2020-07-07 11:41:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:41:47,739 INFO L225 Difference]: With dead ends: 15288 [2020-07-07 11:41:47,739 INFO L226 Difference]: Without dead ends: 11190 [2020-07-07 11:41:47,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:41:47,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2020-07-07 11:41:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11186. [2020-07-07 11:41:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11186 states. [2020-07-07 11:41:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 18931 transitions. [2020-07-07 11:41:48,135 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 18931 transitions. Word has length 361 [2020-07-07 11:41:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:41:48,136 INFO L479 AbstractCegarLoop]: Abstraction has 11186 states and 18931 transitions. [2020-07-07 11:41:48,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:41:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 18931 transitions. [2020-07-07 11:41:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-07-07 11:41:48,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:41:48,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:41:48,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:41:48,169 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:41:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:41:48,169 INFO L82 PathProgramCache]: Analyzing trace with hash 451793818, now seen corresponding path program 1 times [2020-07-07 11:41:48,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:41:48,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519111317] [2020-07-07 11:41:48,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:41:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:49,340 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:41:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:41:49,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519111317] [2020-07-07 11:41:49,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:41:49,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:41:49,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428470257] [2020-07-07 11:41:49,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:41:49,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:41:49,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:41:49,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:41:49,507 INFO L87 Difference]: Start difference. First operand 11186 states and 18931 transitions. Second operand 4 states. [2020-07-07 11:41:50,394 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-07 11:42:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:42:20,570 INFO L93 Difference]: Finished difference Result 31564 states and 53193 transitions. [2020-07-07 11:42:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:42:20,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2020-07-07 11:42:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:42:20,633 INFO L225 Difference]: With dead ends: 31564 [2020-07-07 11:42:20,633 INFO L226 Difference]: Without dead ends: 21006 [2020-07-07 11:42:20,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:42:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2020-07-07 11:42:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 21002. [2020-07-07 11:42:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21002 states. [2020-07-07 11:42:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21002 states to 21002 states and 35288 transitions. [2020-07-07 11:42:21,537 INFO L78 Accepts]: Start accepts. Automaton has 21002 states and 35288 transitions. Word has length 365 [2020-07-07 11:42:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:42:21,538 INFO L479 AbstractCegarLoop]: Abstraction has 21002 states and 35288 transitions. [2020-07-07 11:42:21,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:42:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 21002 states and 35288 transitions. [2020-07-07 11:42:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-07-07 11:42:21,591 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:42:21,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:42:21,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:42:21,592 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:42:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:42:21,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1781087804, now seen corresponding path program 1 times [2020-07-07 11:42:21,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:42:21,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941475231] [2020-07-07 11:42:21,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:42:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:22,902 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:42:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:42:23,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941475231] [2020-07-07 11:42:23,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:42:23,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:42:23,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502880633] [2020-07-07 11:42:23,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:42:23,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:42:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:42:23,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:42:23,128 INFO L87 Difference]: Start difference. First operand 21002 states and 35288 transitions. Second operand 4 states. [2020-07-07 11:42:24,291 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-07 11:42:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:42:51,895 INFO L93 Difference]: Finished difference Result 38803 states and 65367 transitions. [2020-07-07 11:42:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:42:51,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2020-07-07 11:42:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:42:52,020 INFO L225 Difference]: With dead ends: 38803 [2020-07-07 11:42:52,020 INFO L226 Difference]: Without dead ends: 28235 [2020-07-07 11:42:52,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:42:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28235 states. [2020-07-07 11:42:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28235 to 28231. [2020-07-07 11:42:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28231 states. [2020-07-07 11:42:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28231 states to 28231 states and 47446 transitions. [2020-07-07 11:42:54,332 INFO L78 Accepts]: Start accepts. Automaton has 28231 states and 47446 transitions. Word has length 369 [2020-07-07 11:42:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:42:54,333 INFO L479 AbstractCegarLoop]: Abstraction has 28231 states and 47446 transitions. [2020-07-07 11:42:54,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:42:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand 28231 states and 47446 transitions. [2020-07-07 11:42:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-07-07 11:42:54,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:42:54,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:42:54,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:42:54,412 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:42:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:42:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1146566953, now seen corresponding path program 1 times [2020-07-07 11:42:54,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:42:54,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105873554] [2020-07-07 11:42:54,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:42:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:55,654 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:42:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:42:55,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105873554] [2020-07-07 11:42:55,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:42:55,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:42:55,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128275902] [2020-07-07 11:42:55,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:42:55,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:42:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:42:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:42:55,887 INFO L87 Difference]: Start difference. First operand 28231 states and 47446 transitions. Second operand 4 states. [2020-07-07 11:42:56,889 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-07 11:43:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:43:28,104 INFO L93 Difference]: Finished difference Result 81223 states and 135938 transitions. [2020-07-07 11:43:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:43:28,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 373 [2020-07-07 11:43:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:43:28,278 INFO L225 Difference]: With dead ends: 81223 [2020-07-07 11:43:28,278 INFO L226 Difference]: Without dead ends: 53643 [2020-07-07 11:43:28,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:43:28,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53643 states. [2020-07-07 11:43:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53643 to 53639. [2020-07-07 11:43:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53639 states. [2020-07-07 11:43:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53639 states to 53639 states and 89423 transitions. [2020-07-07 11:43:31,575 INFO L78 Accepts]: Start accepts. Automaton has 53639 states and 89423 transitions. Word has length 373 [2020-07-07 11:43:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:43:31,575 INFO L479 AbstractCegarLoop]: Abstraction has 53639 states and 89423 transitions. [2020-07-07 11:43:31,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:43:31,575 INFO L276 IsEmpty]: Start isEmpty. Operand 53639 states and 89423 transitions. [2020-07-07 11:43:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-07-07 11:43:31,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:43:31,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:43:31,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:43:31,660 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:43:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:43:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2020671087, now seen corresponding path program 1 times [2020-07-07 11:43:31,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:43:31,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149160421] [2020-07-07 11:43:31,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:43:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,014 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:43:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:43:33,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149160421] [2020-07-07 11:43:33,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:43:33,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:43:33,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227697441] [2020-07-07 11:43:33,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:43:33,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:43:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:43:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:43:33,172 INFO L87 Difference]: Start difference. First operand 53639 states and 89423 transitions. Second operand 4 states. [2020-07-07 11:43:34,046 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-07 11:44:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:44:06,685 INFO L93 Difference]: Finished difference Result 100010 states and 167236 transitions. [2020-07-07 11:44:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:44:06,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2020-07-07 11:44:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:44:06,842 INFO L225 Difference]: With dead ends: 100010 [2020-07-07 11:44:06,843 INFO L226 Difference]: Without dead ends: 72420 [2020-07-07 11:44:06,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:44:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72420 states. [2020-07-07 11:44:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72420 to 72416. [2020-07-07 11:44:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72416 states. [2020-07-07 11:44:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72416 states to 72416 states and 120709 transitions. [2020-07-07 11:44:08,954 INFO L78 Accepts]: Start accepts. Automaton has 72416 states and 120709 transitions. Word has length 377 [2020-07-07 11:44:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:44:08,955 INFO L479 AbstractCegarLoop]: Abstraction has 72416 states and 120709 transitions. [2020-07-07 11:44:08,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:44:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 72416 states and 120709 transitions. [2020-07-07 11:44:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-07-07 11:44:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:44:09,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:44:09,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:44:09,059 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:44:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:44:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash -315546078, now seen corresponding path program 1 times [2020-07-07 11:44:09,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:44:09,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631564434] [2020-07-07 11:44:09,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:44:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:11,222 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:44:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:44:11,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631564434] [2020-07-07 11:44:11,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:44:11,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:44:11,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661085919] [2020-07-07 11:44:11,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:44:11,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:44:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:44:11,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:44:11,472 INFO L87 Difference]: Start difference. First operand 72416 states and 120709 transitions. Second operand 4 states. [2020-07-07 11:44:12,421 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-07-07 11:44:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:44:49,578 INFO L93 Difference]: Finished difference Result 209486 states and 347551 transitions. [2020-07-07 11:44:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:44:49,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 381 [2020-07-07 11:44:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:44:49,879 INFO L225 Difference]: With dead ends: 209486 [2020-07-07 11:44:49,879 INFO L226 Difference]: Without dead ends: 137744 [2020-07-07 11:44:50,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:44:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137744 states. [2020-07-07 11:44:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137744 to 137740. [2020-07-07 11:44:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137740 states. [2020-07-07 11:44:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137740 states to 137740 states and 227422 transitions. [2020-07-07 11:44:57,822 INFO L78 Accepts]: Start accepts. Automaton has 137740 states and 227422 transitions. Word has length 381 [2020-07-07 11:44:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:44:57,823 INFO L479 AbstractCegarLoop]: Abstraction has 137740 states and 227422 transitions. [2020-07-07 11:44:57,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:44:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 137740 states and 227422 transitions. [2020-07-07 11:44:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-07-07 11:44:57,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:44:57,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:44:57,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:44:57,945 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:44:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:44:57,946 INFO L82 PathProgramCache]: Analyzing trace with hash -430938636, now seen corresponding path program 1 times [2020-07-07 11:44:57,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:44:57,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974231055] [2020-07-07 11:44:57,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:44:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:59,177 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:44:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:44:59,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974231055] [2020-07-07 11:44:59,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:44:59,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:44:59,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563226997] [2020-07-07 11:44:59,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:44:59,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:44:59,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:44:59,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:44:59,327 INFO L87 Difference]: Start difference. First operand 137740 states and 227422 transitions. Second operand 4 states. [2020-07-07 11:45:00,318 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-07 11:45:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:45:36,672 INFO L93 Difference]: Finished difference Result 256489 states and 424821 transitions. [2020-07-07 11:45:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:45:36,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 385 [2020-07-07 11:45:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:45:37,086 INFO L225 Difference]: With dead ends: 256489 [2020-07-07 11:45:37,086 INFO L226 Difference]: Without dead ends: 184737 [2020-07-07 11:45:37,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:45:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184737 states. [2020-07-07 11:45:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184737 to 184733. [2020-07-07 11:45:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184733 states. [2020-07-07 11:45:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184733 states to 184733 states and 304688 transitions. [2020-07-07 11:45:46,934 INFO L78 Accepts]: Start accepts. Automaton has 184733 states and 304688 transitions. Word has length 385 [2020-07-07 11:45:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:45:46,935 INFO L479 AbstractCegarLoop]: Abstraction has 184733 states and 304688 transitions. [2020-07-07 11:45:46,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:45:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 184733 states and 304688 transitions. [2020-07-07 11:45:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-07 11:45:47,200 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:45:47,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:45:47,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:45:47,202 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:45:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:45:47,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1967099999, now seen corresponding path program 1 times [2020-07-07 11:45:47,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:45:47,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657820598] [2020-07-07 11:45:47,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:45:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:48,997 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:45:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:45:49,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657820598] [2020-07-07 11:45:49,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:45:49,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:45:49,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990909381] [2020-07-07 11:45:49,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:45:49,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:45:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:45:49,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:45:49,232 INFO L87 Difference]: Start difference. First operand 184733 states and 304688 transitions. Second operand 8 states. [2020-07-07 11:45:51,323 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 405 DAG size of output: 402 [2020-07-07 11:47:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:47:30,911 INFO L93 Difference]: Finished difference Result 1159489 states and 1919350 transitions. [2020-07-07 11:47:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:47:30,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-07-07 11:47:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:47:32,513 INFO L225 Difference]: With dead ends: 1159489 [2020-07-07 11:47:32,514 INFO L226 Difference]: Without dead ends: 975433 [2020-07-07 11:47:32,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:47:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975433 states. [2020-07-07 11:47:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975433 to 367634. [2020-07-07 11:47:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367634 states. [2020-07-07 11:47:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367634 states to 367634 states and 603488 transitions. [2020-07-07 11:47:59,306 INFO L78 Accepts]: Start accepts. Automaton has 367634 states and 603488 transitions. Word has length 389 [2020-07-07 11:47:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:47:59,308 INFO L479 AbstractCegarLoop]: Abstraction has 367634 states and 603488 transitions. [2020-07-07 11:47:59,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:47:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 367634 states and 603488 transitions. [2020-07-07 11:47:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-07 11:47:59,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:47:59,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:47:59,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:47:59,576 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:47:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:47:59,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2060344893, now seen corresponding path program 1 times [2020-07-07 11:47:59,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:47:59,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419185058] [2020-07-07 11:47:59,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:47:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:48:00,745 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:48:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:48:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:48:00,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419185058] [2020-07-07 11:48:00,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:48:00,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:48:00,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321723180] [2020-07-07 11:48:00,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:48:00,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:48:00,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:48:00,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:48:00,889 INFO L87 Difference]: Start difference. First operand 367634 states and 603488 transitions. Second operand 5 states. [2020-07-07 11:48:01,713 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-07-07 11:49:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:49:12,373 INFO L93 Difference]: Finished difference Result 1094138 states and 1804332 transitions. [2020-07-07 11:49:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:49:12,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-07-07 11:49:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:49:13,455 INFO L225 Difference]: With dead ends: 1094138 [2020-07-07 11:49:13,455 INFO L226 Difference]: Without dead ends: 727181 [2020-07-07 11:49:14,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:49:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727181 states. [2020-07-07 11:49:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727181 to 607029. [2020-07-07 11:49:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607029 states. [2020-07-07 11:49:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607029 states to 607029 states and 997448 transitions. [2020-07-07 11:49:58,444 INFO L78 Accepts]: Start accepts. Automaton has 607029 states and 997448 transitions. Word has length 391 [2020-07-07 11:49:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:49:58,444 INFO L479 AbstractCegarLoop]: Abstraction has 607029 states and 997448 transitions. [2020-07-07 11:49:58,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:49:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 607029 states and 997448 transitions. [2020-07-07 11:49:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-07-07 11:49:58,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:49:58,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:49:58,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 11:49:58,938 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:49:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:49:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1604484090, now seen corresponding path program 1 times [2020-07-07 11:49:58,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:49:58,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777166957] [2020-07-07 11:49:58,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:49:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:00,057 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-07-07 11:50:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:50:00,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777166957] [2020-07-07 11:50:00,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:50:00,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:50:00,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479701253] [2020-07-07 11:50:00,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:50:00,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:50:00,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:50:00,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:50:00,211 INFO L87 Difference]: Start difference. First operand 607029 states and 997448 transitions. Second operand 5 states. [2020-07-07 11:50:01,061 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 397