/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:01:01,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:01:01,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:01:01,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:01:01,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:01:01,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:01:01,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:01:01,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:01:01,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:01:01,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:01:01,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:01:01,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:01:01,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:01:01,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:01:01,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:01:01,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:01:01,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:01:01,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:01:01,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:01:01,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:01:01,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:01:01,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:01:01,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:01:01,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:01:01,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 22:01:01,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 22:01:01,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 22:01:01,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 22:01:01,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 22:01:01,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 22:01:01,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 22:01:01,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 22:01:01,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 22:01:01,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 22:01:01,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 22:01:01,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 22:01:01,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 22:01:01,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 22:01:01,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:01:01,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:01:01,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:01:01,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 22:01:01,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:01:01,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:01:01,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:01:01,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:01:01,372 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:01:01,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:01:01,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 22:01:01,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:01:01,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 22:01:01,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:01:01,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:01:01,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:01:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:01:01,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 22:01:01,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:01:01,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:01:01,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:01:01,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:01:01,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:01:01,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:01:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:01:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:01:01,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:01:01,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:01:01,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:01:01,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:01:01,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:01:01,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:01:01,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:01:01,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 22:01:01,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:01:01,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:01:01,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:01:01,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:01:01,880 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:01:01,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-27 22:01:01,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2fadd23/41bfdf806c9d4770a020caade4089f77/FLAG073a85898 [2020-08-27 22:01:02,589 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:01:02,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-27 22:01:02,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2fadd23/41bfdf806c9d4770a020caade4089f77/FLAG073a85898 [2020-08-27 22:01:02,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2fadd23/41bfdf806c9d4770a020caade4089f77 [2020-08-27 22:01:02,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:01:02,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:01:02,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:01:02,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:01:02,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:01:02,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:01:02" (1/1) ... [2020-08-27 22:01:02,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a5a214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:02, skipping insertion in model container [2020-08-27 22:01:02,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:01:02" (1/1) ... [2020-08-27 22:01:02,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:01:02,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:01:03,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:01:03,413 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:01:03,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:01:03,522 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:01:03,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03 WrapperNode [2020-08-27 22:01:03,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:01:03,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:01:03,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:01:03,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:01:03,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... [2020-08-27 22:01:03,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:01:03,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:01:03,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:01:03,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:01:03,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-27 22:01:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:01:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:01:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 22:01:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-27 22:01:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-27 22:01:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-27 22:01:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-27 22:01:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-27 22:01:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-27 22:01:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-27 22:01:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-27 22:01:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-27 22:01:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-27 22:01:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-27 22:01:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-27 22:01:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-27 22:01:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-27 22:01:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-27 22:01:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:01:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-27 22:01:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:01:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-27 22:01:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-27 22:01:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-27 22:01:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-27 22:01:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-27 22:01:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 22:01:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 22:01:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-27 22:01:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-27 22:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-27 22:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-27 22:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-27 22:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-27 22:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-27 22:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-27 22:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-27 22:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:01:04,578 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:01:04,578 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-27 22:01:04,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:01:04 BoogieIcfgContainer [2020-08-27 22:01:04,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:01:04,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:01:04,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:01:04,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:01:04,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:01:02" (1/3) ... [2020-08-27 22:01:04,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d158282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:01:04, skipping insertion in model container [2020-08-27 22:01:04,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:01:03" (2/3) ... [2020-08-27 22:01:04,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d158282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:01:04, skipping insertion in model container [2020-08-27 22:01:04,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:01:04" (3/3) ... [2020-08-27 22:01:04,597 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-27 22:01:04,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:01:04,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 22:01:04,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 22:01:04,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:01:04,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:01:04,684 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:01:04,684 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:01:04,684 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:01:04,684 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:01:04,685 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:01:04,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:01:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-27 22:01:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-27 22:01:04,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:04,732 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] [2020-08-27 22:01:04,733 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:04,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-27 22:01:04,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:04,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922451344] [2020-08-27 22:01:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,394 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:05,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 22:01:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:01:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 22:01:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:01:05,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922451344] [2020-08-27 22:01:05,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:05,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 22:01:05,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803099538] [2020-08-27 22:01:05,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 22:01:05,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:05,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 22:01:05,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-27 22:01:05,730 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-27 22:01:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:07,493 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-27 22:01:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 22:01:07,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-27 22:01:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:07,514 INFO L225 Difference]: With dead ends: 456 [2020-08-27 22:01:07,514 INFO L226 Difference]: Without dead ends: 237 [2020-08-27 22:01:07,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-27 22:01:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-27 22:01:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-27 22:01:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-27 22:01:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-27 22:01:07,629 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-27 22:01:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:07,629 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-27 22:01:07,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 22:01:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-27 22:01:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-27 22:01:07,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:07,634 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] [2020-08-27 22:01:07,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:01:07,635 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:07,635 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-27 22:01:07,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:07,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928445843] [2020-08-27 22:01:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:07,885 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 22:01:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:01:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 22:01:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:08,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:01:08,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928445843] [2020-08-27 22:01:08,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:08,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-27 22:01:08,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976961971] [2020-08-27 22:01:08,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-27 22:01:08,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-27 22:01:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-27 22:01:08,159 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-27 22:01:08,354 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-27 22:01:08,636 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-27 22:01:08,800 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-27 22:01:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:11,482 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-27 22:01:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 22:01:11,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-27 22:01:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:11,486 INFO L225 Difference]: With dead ends: 455 [2020-08-27 22:01:11,487 INFO L226 Difference]: Without dead ends: 237 [2020-08-27 22:01:11,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-27 22:01:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-27 22:01:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-27 22:01:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-27 22:01:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-27 22:01:11,525 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-27 22:01:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:11,526 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-27 22:01:11,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-27 22:01:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-27 22:01:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-27 22:01:11,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:11,529 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] [2020-08-27 22:01:11,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 22:01:11,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:11,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-27 22:01:11,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:11,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115891444] [2020-08-27 22:01:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,782 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:11,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:01:11,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115891444] [2020-08-27 22:01:11,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:11,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 22:01:11,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131490884] [2020-08-27 22:01:12,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 22:01:12,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:12,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 22:01:12,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-27 22:01:12,001 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-27 22:01:13,026 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-27 22:01:13,196 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-27 22:01:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:14,474 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-27 22:01:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 22:01:14,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-27 22:01:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:14,478 INFO L225 Difference]: With dead ends: 454 [2020-08-27 22:01:14,478 INFO L226 Difference]: Without dead ends: 241 [2020-08-27 22:01:14,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-27 22:01:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-27 22:01:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-27 22:01:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-27 22:01:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-27 22:01:14,518 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-27 22:01:14,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:14,519 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-27 22:01:14,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 22:01:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-27 22:01:14,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-27 22:01:14,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:14,522 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] [2020-08-27 22:01:14,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 22:01:14,523 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:14,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-27 22:01:14,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:14,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505753930] [2020-08-27 22:01:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:14,837 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-27 22:01:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-27 22:01:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:15,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505753930] [2020-08-27 22:01:15,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:15,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-27 22:01:15,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271003830] [2020-08-27 22:01:15,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 22:01:15,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:15,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 22:01:15,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-27 22:01:15,232 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-27 22:01:15,429 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-27 22:01:17,659 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-27 22:01:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:19,719 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-27 22:01:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 22:01:19,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-27 22:01:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:19,725 INFO L225 Difference]: With dead ends: 549 [2020-08-27 22:01:19,725 INFO L226 Difference]: Without dead ends: 332 [2020-08-27 22:01:19,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-27 22:01:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-27 22:01:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-27 22:01:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-27 22:01:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-27 22:01:19,762 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-27 22:01:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:19,762 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-27 22:01:19,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 22:01:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-27 22:01:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-27 22:01:19,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:19,765 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] [2020-08-27 22:01:19,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 22:01:19,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:19,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-27 22:01:19,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:19,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844160908] [2020-08-27 22:01:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,073 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:20,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 22:01:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-27 22:01:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:20,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844160908] [2020-08-27 22:01:20,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:20,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-27 22:01:20,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577682646] [2020-08-27 22:01:20,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 22:01:20,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:20,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 22:01:20,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-27 22:01:20,435 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-27 22:01:20,601 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-27 22:01:22,010 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-27 22:01:22,147 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-08-27 22:01:22,754 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-27 22:01:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:24,806 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-27 22:01:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 22:01:24,807 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-27 22:01:24,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:24,811 INFO L225 Difference]: With dead ends: 555 [2020-08-27 22:01:24,811 INFO L226 Difference]: Without dead ends: 335 [2020-08-27 22:01:24,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-27 22:01:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-27 22:01:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-27 22:01:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-27 22:01:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-27 22:01:24,849 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-27 22:01:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:24,850 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-27 22:01:24,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 22:01:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-27 22:01:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-27 22:01:24,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:24,852 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] [2020-08-27 22:01:24,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 22:01:24,853 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-27 22:01:24,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:24,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802693538] [2020-08-27 22:01:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,091 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-27 22:01:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:25,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802693538] [2020-08-27 22:01:25,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:25,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 22:01:25,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094051639] [2020-08-27 22:01:25,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 22:01:25,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 22:01:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-27 22:01:25,436 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-27 22:01:26,419 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-27 22:01:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:29,431 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-27 22:01:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 22:01:29,432 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-27 22:01:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:29,437 INFO L225 Difference]: With dead ends: 788 [2020-08-27 22:01:29,437 INFO L226 Difference]: Without dead ends: 568 [2020-08-27 22:01:29,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-27 22:01:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-27 22:01:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-27 22:01:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-27 22:01:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-27 22:01:29,504 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-27 22:01:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:29,505 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-27 22:01:29,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 22:01:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-27 22:01:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-27 22:01:29,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:29,507 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] [2020-08-27 22:01:29,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 22:01:29,508 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:29,508 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-27 22:01:29,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:29,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725855228] [2020-08-27 22:01:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,722 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 22:01:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:29,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725855228] [2020-08-27 22:01:29,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:29,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 22:01:29,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689204838] [2020-08-27 22:01:29,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 22:01:29,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:29,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 22:01:29,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-27 22:01:29,991 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-27 22:01:31,174 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-27 22:01:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:34,144 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-27 22:01:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 22:01:34,145 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-27 22:01:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:34,160 INFO L225 Difference]: With dead ends: 1308 [2020-08-27 22:01:34,160 INFO L226 Difference]: Without dead ends: 911 [2020-08-27 22:01:34,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-27 22:01:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-27 22:01:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-27 22:01:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-27 22:01:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-27 22:01:34,295 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-27 22:01:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:34,296 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-27 22:01:34,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 22:01:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-27 22:01:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-27 22:01:34,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:34,298 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] [2020-08-27 22:01:34,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 22:01:34,299 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:34,299 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-27 22:01:34,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:34,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483530027] [2020-08-27 22:01:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,565 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-27 22:01:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 22:01:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:34,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483530027] [2020-08-27 22:01:34,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:34,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 22:01:34,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262991512] [2020-08-27 22:01:34,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 22:01:34,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:34,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 22:01:34,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-27 22:01:34,909 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-27 22:01:35,073 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-27 22:01:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:38,795 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-27 22:01:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 22:01:38,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-27 22:01:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:38,808 INFO L225 Difference]: With dead ends: 1649 [2020-08-27 22:01:38,808 INFO L226 Difference]: Without dead ends: 916 [2020-08-27 22:01:38,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-27 22:01:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-27 22:01:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-27 22:01:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-27 22:01:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-27 22:01:38,910 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-27 22:01:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:38,911 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-27 22:01:38,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 22:01:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-27 22:01:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-27 22:01:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:38,914 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] [2020-08-27 22:01:38,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 22:01:38,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-27 22:01:38,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:38,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968137693] [2020-08-27 22:01:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,136 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 22:01:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:39,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968137693] [2020-08-27 22:01:39,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:39,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 22:01:39,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906606100] [2020-08-27 22:01:39,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 22:01:39,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:39,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 22:01:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-27 22:01:39,473 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-27 22:01:41,012 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-27 22:01:41,186 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-27 22:01:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:42,226 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-27 22:01:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 22:01:42,226 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-27 22:01:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:42,233 INFO L225 Difference]: With dead ends: 1663 [2020-08-27 22:01:42,233 INFO L226 Difference]: Without dead ends: 930 [2020-08-27 22:01:42,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-27 22:01:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-27 22:01:42,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-27 22:01:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-27 22:01:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-27 22:01:42,355 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-27 22:01:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:42,356 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-27 22:01:42,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 22:01:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-27 22:01:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-27 22:01:42,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:42,360 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] [2020-08-27 22:01:42,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 22:01:42,360 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-27 22:01:42,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:42,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442009376] [2020-08-27 22:01:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,644 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:42,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-27 22:01:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-27 22:01:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 22:01:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-27 22:01:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:42,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442009376] [2020-08-27 22:01:42,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:42,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 22:01:42,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887786378] [2020-08-27 22:01:42,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 22:01:42,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:42,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 22:01:42,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-27 22:01:42,963 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-27 22:01:43,137 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-27 22:01:44,817 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-08-27 22:01:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:47,019 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-27 22:01:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 22:01:47,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-27 22:01:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:47,026 INFO L225 Difference]: With dead ends: 1715 [2020-08-27 22:01:47,026 INFO L226 Difference]: Without dead ends: 962 [2020-08-27 22:01:47,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-27 22:01:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-27 22:01:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-27 22:01:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-27 22:01:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-27 22:01:47,132 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-27 22:01:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:47,132 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-27 22:01:47,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 22:01:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-27 22:01:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-27 22:01:47,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:47,136 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] [2020-08-27 22:01:47,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 22:01:47,136 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:47,137 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-27 22:01:47,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:47,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319297016] [2020-08-27 22:01:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,404 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:47,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 22:01:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 22:01:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:47,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319297016] [2020-08-27 22:01:47,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:47,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 22:01:47,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387991624] [2020-08-27 22:01:47,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 22:01:47,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:47,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 22:01:47,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-27 22:01:47,656 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-27 22:01:49,368 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-27 22:01:49,549 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-27 22:01:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:50,586 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-27 22:01:50,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 22:01:50,587 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-27 22:01:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:50,593 INFO L225 Difference]: With dead ends: 1703 [2020-08-27 22:01:50,593 INFO L226 Difference]: Without dead ends: 950 [2020-08-27 22:01:50,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-27 22:01:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-27 22:01:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-27 22:01:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-27 22:01:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-27 22:01:50,709 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-27 22:01:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:50,710 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-27 22:01:50,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 22:01:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-27 22:01:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-27 22:01:50,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:50,712 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] [2020-08-27 22:01:50,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 22:01:50,713 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-27 22:01:50,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:50,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924011261] [2020-08-27 22:01:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:50,998 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 22:01:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 22:01:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-27 22:01:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:51,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924011261] [2020-08-27 22:01:51,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:51,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 22:01:51,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540610161] [2020-08-27 22:01:51,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 22:01:51,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:51,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 22:01:51,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-27 22:01:51,287 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-27 22:01:53,045 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-27 22:01:53,224 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-27 22:01:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:01:54,125 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-27 22:01:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 22:01:54,125 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-27 22:01:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:01:54,132 INFO L225 Difference]: With dead ends: 1739 [2020-08-27 22:01:54,132 INFO L226 Difference]: Without dead ends: 966 [2020-08-27 22:01:54,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-27 22:01:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-27 22:01:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-27 22:01:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-27 22:01:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-27 22:01:54,241 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-27 22:01:54,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:01:54,242 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-27 22:01:54,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 22:01:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-27 22:01:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-27 22:01:54,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:01:54,245 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] [2020-08-27 22:01:54,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-27 22:01:54,245 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:01:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:01:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-27 22:01:54,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:01:54,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893105290] [2020-08-27 22:01:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:01:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,531 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-27 22:01:54,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:01:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:01:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:01:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 22:01:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 22:01:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 22:01:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 22:01:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:01:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 22:01:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 22:01:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 22:01:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-27 22:01:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:01:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 22:01:54,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893105290] [2020-08-27 22:01:54,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:01:54,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-27 22:01:54,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003372880] [2020-08-27 22:01:54,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-27 22:01:54,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:01:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-27 22:01:54,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-27 22:01:54,912 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-27 22:01:55,299 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-27 22:01:55,524 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-27 22:01:56,079 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 132