/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:08:57,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:08:57,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:08:57,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:08:57,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:08:57,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:08:57,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:08:57,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:08:57,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:08:57,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:08:57,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:08:57,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:08:57,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:08:57,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:08:57,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:08:57,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:08:57,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:08:57,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:08:57,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:08:57,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:08:57,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:08:57,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:08:57,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:08:57,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:08:57,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 14:08:57,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 14:08:57,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 14:08:57,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 14:08:57,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 14:08:57,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 14:08:57,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 14:08:57,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 14:08:57,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 14:08:57,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 14:08:57,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 14:08:57,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 14:08:57,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 14:08:57,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 14:08:57,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:08:57,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:08:57,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:08:57,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:08:57,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:08:57,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:08:57,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:08:57,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:08:57,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:08:57,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:08:57,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:08:57,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:08:57,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:08:57,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:08:57,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:08:57,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:08:57,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:08:57,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:08:57,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:08:57,587 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:08:57,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:08:57,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:08:57,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:08:57,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:08:57,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:08:57,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:08:57,588 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:08:57,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:08:57,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:08:57,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:08:57,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:08:57,904 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:08:57,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-07-07 14:08:57,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb9ab45d/6aa2febe267940b9a41e1cf7e6cccd04/FLAG2abf791ef [2020-07-07 14:08:58,605 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:08:58,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-07-07 14:08:58,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb9ab45d/6aa2febe267940b9a41e1cf7e6cccd04/FLAG2abf791ef [2020-07-07 14:08:58,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb9ab45d/6aa2febe267940b9a41e1cf7e6cccd04 [2020-07-07 14:08:58,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:08:58,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:08:58,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:08:58,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:08:58,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:08:58,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:08:58" (1/1) ... [2020-07-07 14:08:58,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ec4255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:58, skipping insertion in model container [2020-07-07 14:08:58,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:08:58" (1/1) ... [2020-07-07 14:08:58,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:08:58,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:08:59,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:08:59,380 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:08:59,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:08:59,509 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:08:59,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59 WrapperNode [2020-07-07 14:08:59,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:08:59,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:08:59,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:08:59,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:08:59,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... [2020-07-07 14:08:59,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:08:59,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:08:59,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:08:59,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:08:59,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:08:59,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:08:59,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:08:59,654 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:08:59,654 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-07-07 14:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-07-07 14:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-07-07 14:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-07-07 14:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-07-07 14:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-07-07 14:08:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-07-07 14:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-07-07 14:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-07 14:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-07-07 14:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-07-07 14:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-07-07 14:08:59,656 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-07-07 14:08:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-07-07 14:08:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-07 14:08:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:08:59,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-07-07 14:08:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 14:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 14:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-07 14:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-07 14:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-07 14:08:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:08:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:08:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-07-07 14:08:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-07-07 14:08:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-07-07 14:08:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-07-07 14:08:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-07-07 14:08:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-07-07 14:08:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-07-07 14:08:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-07-07 14:08:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-07 14:08:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:08:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:08:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:09:00,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:09:00,695 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:09:00,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:09:00 BoogieIcfgContainer [2020-07-07 14:09:00,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:09:00,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:09:00,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:09:00,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:09:00,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:08:58" (1/3) ... [2020-07-07 14:09:00,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b559f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:09:00, skipping insertion in model container [2020-07-07 14:09:00,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:08:59" (2/3) ... [2020-07-07 14:09:00,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b559f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:09:00, skipping insertion in model container [2020-07-07 14:09:00,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:09:00" (3/3) ... [2020-07-07 14:09:00,715 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-07-07 14:09:00,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:09:00,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:09:00,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:09:00,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:09:00,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:09:00,781 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:09:00,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:09:00,782 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:09:00,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:09:00,783 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:09:00,783 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:09:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states. [2020-07-07 14:09:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-07-07 14:09:00,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:00,836 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] [2020-07-07 14:09:00,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash -182402980, now seen corresponding path program 1 times [2020-07-07 14:09:00,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:00,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322027733] [2020-07-07 14:09:00,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,461 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:02,001 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 14:09:02,002 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:02,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322027733] [2020-07-07 14:09:02,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:02,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 14:09:02,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793017326] [2020-07-07 14:09:02,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 14:09:02,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:02,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 14:09:02,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:09:02,038 INFO L87 Difference]: Start difference. First operand 574 states. Second operand 14 states. [2020-07-07 14:09:02,741 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-07 14:09:03,115 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-07-07 14:09:03,304 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-07 14:09:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:07,095 INFO L93 Difference]: Finished difference Result 1019 states and 1270 transitions. [2020-07-07 14:09:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 14:09:07,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 228 [2020-07-07 14:09:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:07,118 INFO L225 Difference]: With dead ends: 1019 [2020-07-07 14:09:07,119 INFO L226 Difference]: Without dead ends: 550 [2020-07-07 14:09:07,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-07-07 14:09:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-07-07 14:09:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-07-07 14:09:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-07-07 14:09:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 643 transitions. [2020-07-07 14:09:07,282 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 643 transitions. Word has length 228 [2020-07-07 14:09:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:07,283 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 643 transitions. [2020-07-07 14:09:07,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 14:09:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 643 transitions. [2020-07-07 14:09:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-07 14:09:07,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:07,291 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] [2020-07-07 14:09:07,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:09:07,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1513791060, now seen corresponding path program 1 times [2020-07-07 14:09:07,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:07,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239424073] [2020-07-07 14:09:07,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,612 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:08,029 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 14:09:08,031 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:08,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239424073] [2020-07-07 14:09:08,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:08,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 14:09:08,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713025183] [2020-07-07 14:09:08,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 14:09:08,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:08,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 14:09:08,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-07 14:09:08,065 INFO L87 Difference]: Start difference. First operand 550 states and 643 transitions. Second operand 11 states. [2020-07-07 14:09:10,117 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-07-07 14:09:10,280 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-07-07 14:09:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:11,662 INFO L93 Difference]: Finished difference Result 976 states and 1167 transitions. [2020-07-07 14:09:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 14:09:11,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2020-07-07 14:09:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:11,671 INFO L225 Difference]: With dead ends: 976 [2020-07-07 14:09:11,671 INFO L226 Difference]: Without dead ends: 555 [2020-07-07 14:09:11,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-07-07 14:09:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-07-07 14:09:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-07-07 14:09:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-07-07 14:09:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 647 transitions. [2020-07-07 14:09:11,781 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 647 transitions. Word has length 239 [2020-07-07 14:09:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:11,783 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 647 transitions. [2020-07-07 14:09:11,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 14:09:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 647 transitions. [2020-07-07 14:09:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-07-07 14:09:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:11,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:11,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:09:11,797 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:11,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:11,798 INFO L82 PathProgramCache]: Analyzing trace with hash 960210052, now seen corresponding path program 1 times [2020-07-07 14:09:11,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:11,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385334904] [2020-07-07 14:09:11,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,194 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 14:09:12,853 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:12,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385334904] [2020-07-07 14:09:12,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:12,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 14:09:12,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010775461] [2020-07-07 14:09:12,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 14:09:12,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:12,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 14:09:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-07-07 14:09:12,858 INFO L87 Difference]: Start difference. First operand 555 states and 647 transitions. Second operand 16 states. [2020-07-07 14:09:12,989 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-07 14:09:13,732 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-07 14:09:16,061 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-07-07 14:09:16,962 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-07 14:09:19,005 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-07 14:09:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:19,582 INFO L93 Difference]: Finished difference Result 1181 states and 1390 transitions. [2020-07-07 14:09:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 14:09:19,583 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 312 [2020-07-07 14:09:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:19,590 INFO L225 Difference]: With dead ends: 1181 [2020-07-07 14:09:19,591 INFO L226 Difference]: Without dead ends: 755 [2020-07-07 14:09:19,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-07-07 14:09:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-07-07 14:09:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 747. [2020-07-07 14:09:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-07-07 14:09:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 864 transitions. [2020-07-07 14:09:19,813 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 864 transitions. Word has length 312 [2020-07-07 14:09:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:19,815 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 864 transitions. [2020-07-07 14:09:19,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 14:09:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 864 transitions. [2020-07-07 14:09:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-07-07 14:09:19,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:19,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:19,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:09:19,823 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:19,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1614602927, now seen corresponding path program 1 times [2020-07-07 14:09:19,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:19,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966386439] [2020-07-07 14:09:19,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,152 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:20,592 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 14:09:20,592 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:20,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966386439] [2020-07-07 14:09:20,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:20,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 14:09:20,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844356335] [2020-07-07 14:09:20,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 14:09:20,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:20,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 14:09:20,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-07-07 14:09:20,598 INFO L87 Difference]: Start difference. First operand 747 states and 864 transitions. Second operand 16 states. [2020-07-07 14:09:21,298 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-07 14:09:24,437 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-07 14:09:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:26,976 INFO L93 Difference]: Finished difference Result 1189 states and 1400 transitions. [2020-07-07 14:09:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-07 14:09:26,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-07-07 14:09:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:26,983 INFO L225 Difference]: With dead ends: 1189 [2020-07-07 14:09:26,983 INFO L226 Difference]: Without dead ends: 760 [2020-07-07 14:09:26,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=591, Invalid=1959, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 14:09:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-07-07 14:09:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 747. [2020-07-07 14:09:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-07-07 14:09:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 864 transitions. [2020-07-07 14:09:27,108 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 864 transitions. Word has length 313 [2020-07-07 14:09:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:27,109 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 864 transitions. [2020-07-07 14:09:27,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 14:09:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 864 transitions. [2020-07-07 14:09:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-07-07 14:09:27,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:27,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:27,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:09:27,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:27,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:27,113 INFO L82 PathProgramCache]: Analyzing trace with hash -334289294, now seen corresponding path program 1 times [2020-07-07 14:09:27,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:27,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524111262] [2020-07-07 14:09:27,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,377 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:27,816 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 14:09:27,816 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:27,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524111262] [2020-07-07 14:09:27,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:27,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 14:09:27,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064754089] [2020-07-07 14:09:27,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 14:09:27,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:27,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 14:09:27,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-07-07 14:09:27,821 INFO L87 Difference]: Start difference. First operand 747 states and 864 transitions. Second operand 16 states. [2020-07-07 14:09:28,521 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-07 14:09:29,222 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-07 14:09:30,814 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-07-07 14:09:33,413 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-07 14:09:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:33,992 INFO L93 Difference]: Finished difference Result 1189 states and 1403 transitions. [2020-07-07 14:09:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 14:09:33,993 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 315 [2020-07-07 14:09:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:33,999 INFO L225 Difference]: With dead ends: 1189 [2020-07-07 14:09:33,999 INFO L226 Difference]: Without dead ends: 760 [2020-07-07 14:09:34,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=611, Invalid=1645, Unknown=0, NotChecked=0, Total=2256 [2020-07-07 14:09:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-07-07 14:09:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 749. [2020-07-07 14:09:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-07-07 14:09:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 866 transitions. [2020-07-07 14:09:34,153 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 866 transitions. Word has length 315 [2020-07-07 14:09:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:34,154 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 866 transitions. [2020-07-07 14:09:34,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 14:09:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 866 transitions. [2020-07-07 14:09:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-07-07 14:09:34,157 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:34,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:34,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:09:34,158 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash 76317371, now seen corresponding path program 1 times [2020-07-07 14:09:34,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:34,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879532176] [2020-07-07 14:09:34,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:34,714 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 14:09:34,714 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:34,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879532176] [2020-07-07 14:09:34,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:34,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:09:34,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614107655] [2020-07-07 14:09:34,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:09:34,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:09:34,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:09:34,718 INFO L87 Difference]: Start difference. First operand 749 states and 866 transitions. Second operand 12 states. [2020-07-07 14:09:36,052 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-07-07 14:09:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:39,667 INFO L93 Difference]: Finished difference Result 1639 states and 1944 transitions. [2020-07-07 14:09:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 14:09:39,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 315 [2020-07-07 14:09:39,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:39,677 INFO L225 Difference]: With dead ends: 1639 [2020-07-07 14:09:39,677 INFO L226 Difference]: Without dead ends: 1208 [2020-07-07 14:09:39,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 14:09:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-07-07 14:09:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1169. [2020-07-07 14:09:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2020-07-07 14:09:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1377 transitions. [2020-07-07 14:09:39,869 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1377 transitions. Word has length 315 [2020-07-07 14:09:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:39,870 INFO L479 AbstractCegarLoop]: Abstraction has 1169 states and 1377 transitions. [2020-07-07 14:09:39,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:09:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1377 transitions. [2020-07-07 14:09:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-07-07 14:09:39,874 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:39,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:39,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:09:39,875 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:39,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1072526262, now seen corresponding path program 1 times [2020-07-07 14:09:39,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:39,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037293635] [2020-07-07 14:09:39,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,090 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:40,574 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 14:09:40,575 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:40,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037293635] [2020-07-07 14:09:40,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:40,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:09:40,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261217767] [2020-07-07 14:09:40,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:09:40,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:40,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:09:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:09:40,578 INFO L87 Difference]: Start difference. First operand 1169 states and 1377 transitions. Second operand 12 states. [2020-07-07 14:09:42,594 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-07-07 14:09:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:45,853 INFO L93 Difference]: Finished difference Result 2591 states and 3129 transitions. [2020-07-07 14:09:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 14:09:45,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 316 [2020-07-07 14:09:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:45,864 INFO L225 Difference]: With dead ends: 2591 [2020-07-07 14:09:45,865 INFO L226 Difference]: Without dead ends: 1830 [2020-07-07 14:09:45,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 14:09:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-07-07 14:09:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1810. [2020-07-07 14:09:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1810 states. [2020-07-07 14:09:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2171 transitions. [2020-07-07 14:09:46,323 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2171 transitions. Word has length 316 [2020-07-07 14:09:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:46,324 INFO L479 AbstractCegarLoop]: Abstraction has 1810 states and 2171 transitions. [2020-07-07 14:09:46,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:09:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2171 transitions. [2020-07-07 14:09:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-07-07 14:09:46,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:46,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:46,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:09:46,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -231388138, now seen corresponding path program 1 times [2020-07-07 14:09:46,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:46,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580411594] [2020-07-07 14:09:46,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,621 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:46,991 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 14:09:46,991 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:46,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580411594] [2020-07-07 14:09:46,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:46,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 14:09:46,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801626655] [2020-07-07 14:09:46,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 14:09:46,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:46,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 14:09:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-07 14:09:46,996 INFO L87 Difference]: Start difference. First operand 1810 states and 2171 transitions. Second operand 13 states. [2020-07-07 14:09:49,270 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-07-07 14:09:49,399 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-07-07 14:09:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:50,677 INFO L93 Difference]: Finished difference Result 3210 states and 3909 transitions. [2020-07-07 14:09:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 14:09:50,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 316 [2020-07-07 14:09:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:50,689 INFO L225 Difference]: With dead ends: 3210 [2020-07-07 14:09:50,689 INFO L226 Difference]: Without dead ends: 1834 [2020-07-07 14:09:50,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-07-07 14:09:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2020-07-07 14:09:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1834. [2020-07-07 14:09:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1834 states. [2020-07-07 14:09:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2191 transitions. [2020-07-07 14:09:51,190 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2191 transitions. Word has length 316 [2020-07-07 14:09:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:51,191 INFO L479 AbstractCegarLoop]: Abstraction has 1834 states and 2191 transitions. [2020-07-07 14:09:51,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 14:09:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2191 transitions. [2020-07-07 14:09:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-07 14:09:51,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:51,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:51,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:09:51,198 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1850727016, now seen corresponding path program 1 times [2020-07-07 14:09:51,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:51,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109035583] [2020-07-07 14:09:51,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,489 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:52,018 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 14:09:52,018 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:52,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109035583] [2020-07-07 14:09:52,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:52,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:09:52,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145656560] [2020-07-07 14:09:52,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:09:52,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:52,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:09:52,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:09:52,025 INFO L87 Difference]: Start difference. First operand 1834 states and 2191 transitions. Second operand 12 states. [2020-07-07 14:09:52,146 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-07 14:09:52,736 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-07-07 14:09:55,669 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-07 14:09:56,125 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-07-07 14:09:56,407 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-07 14:09:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:58,889 INFO L93 Difference]: Finished difference Result 3310 states and 3992 transitions. [2020-07-07 14:09:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 14:09:58,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 335 [2020-07-07 14:09:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:58,912 INFO L225 Difference]: With dead ends: 3310 [2020-07-07 14:09:58,913 INFO L226 Difference]: Without dead ends: 1910 [2020-07-07 14:09:58,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 14:09:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2020-07-07 14:09:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1834. [2020-07-07 14:09:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1834 states. [2020-07-07 14:09:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2186 transitions. [2020-07-07 14:09:59,448 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2186 transitions. Word has length 335 [2020-07-07 14:09:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:59,449 INFO L479 AbstractCegarLoop]: Abstraction has 1834 states and 2186 transitions. [2020-07-07 14:09:59,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:09:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2186 transitions. [2020-07-07 14:09:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-07 14:09:59,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:59,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:59,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 14:09:59,456 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:59,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:59,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1104461669, now seen corresponding path program 1 times [2020-07-07 14:09:59,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:59,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737012934] [2020-07-07 14:09:59,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,719 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-07 14:09:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:00,074 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 14:10:00,074 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:10:00,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737012934] [2020-07-07 14:10:00,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:10:00,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 14:10:00,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494658421] [2020-07-07 14:10:00,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 14:10:00,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:10:00,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 14:10:00,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-07 14:10:00,078 INFO L87 Difference]: Start difference. First operand 1834 states and 2186 transitions. Second operand 13 states. [2020-07-07 14:10:02,567 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-07-07 14:10:02,715 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-07-07 14:10:03,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:10:03,998 INFO L93 Difference]: Finished difference Result 3258 states and 3948 transitions. [2020-07-07 14:10:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 14:10:03,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 327 [2020-07-07 14:10:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:10:04,009 INFO L225 Difference]: With dead ends: 3258 [2020-07-07 14:10:04,010 INFO L226 Difference]: Without dead ends: 1858 [2020-07-07 14:10:04,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-07-07 14:10:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-07-07 14:10:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1858. [2020-07-07 14:10:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-07-07 14:10:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2206 transitions. [2020-07-07 14:10:04,419 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2206 transitions. Word has length 327 [2020-07-07 14:10:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:10:04,420 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2206 transitions. [2020-07-07 14:10:04,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 14:10:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2206 transitions. [2020-07-07 14:10:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-07 14:10:04,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:10:04,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:04,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 14:10:04,426 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:10:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:10:04,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2004104661, now seen corresponding path program 1 times [2020-07-07 14:10:04,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:10:04,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949931559] [2020-07-07 14:10:04,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:10:04,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 14:10:04,448 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 14:10:04,463 INFO L168 Benchmark]: Toolchain (without parser) took 65537.37 ms. Allocated memory was 136.8 MB in the beginning and 1.1 GB in the end (delta: 920.1 MB). Free memory was 99.4 MB in the beginning and 321.9 MB in the end (delta: -222.5 MB). Peak memory consumption was 697.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:04,466 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 136.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 14:10:04,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.75 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 172.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:04,469 INFO L168 Benchmark]: Boogie Preprocessor took 78.16 ms. Allocated memory is still 201.3 MB. Free memory was 172.7 MB in the beginning and 170.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:04,470 INFO L168 Benchmark]: RCFGBuilder took 1115.59 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 170.0 MB in the beginning and 200.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:04,479 INFO L168 Benchmark]: TraceAbstraction took 63744.90 ms. Allocated memory was 231.7 MB in the beginning and 1.1 GB in the end (delta: 825.2 MB). Free memory was 199.5 MB in the beginning and 321.9 MB in the end (delta: -122.4 MB). Peak memory consumption was 702.8 MB. Max. memory is 7.1 GB. [2020-07-07 14:10:04,485 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 136.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 593.75 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 172.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.16 ms. Allocated memory is still 201.3 MB. Free memory was 172.7 MB in the beginning and 170.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1115.59 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 170.0 MB in the beginning and 200.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 63744.90 ms. Allocated memory was 231.7 MB in the beginning and 1.1 GB in the end (delta: 825.2 MB). Free memory was 199.5 MB in the beginning and 321.9 MB in the end (delta: -122.4 MB). Peak memory consumption was 702.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...