/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:09:59,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:09:59,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:09:59,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:09:59,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:09:59,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:09:59,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:09:59,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:09:59,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:09:59,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:09:59,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:09:59,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:09:59,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:09:59,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:09:59,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:09:59,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:09:59,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:09:59,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:09:59,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:09:59,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:09:59,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:09:59,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:09:59,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:09:59,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:09:59,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:09:59,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:09:59,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:09:59,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:09:59,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:09:59,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:09:59,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:09:59,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:09:59,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:09:59,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:09:59,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:09:59,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:09:59,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:09:59,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:09:59,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:09:59,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:09:59,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:09:59,994 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 [2020-09-24 15:10:00,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:10:00,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:10:00,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:10:00,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:10:00,050 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:10:00,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:10:00,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:10:00,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:10:00,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:10:00,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:10:00,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:10:00,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:10:00,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:10:00,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:10:00,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:10:00,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:10:00,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:10:00,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:10:00,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:10:00,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:10:00,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:10:00,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:10:00,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:10:00,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:10:00,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:10:00,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:10:00,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:10:00,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:10:00,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:10:00,057 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:10:00,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:10:00,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:10:00,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:10:00,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:10:00,566 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:10:00,567 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-24 15:10:00,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe5fa7f08/472cfd919f2f4ac49462c8fee0cb02a7/FLAGd21b98e91 [2020-09-24 15:10:01,288 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:10:01,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-24 15:10:01,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe5fa7f08/472cfd919f2f4ac49462c8fee0cb02a7/FLAGd21b98e91 [2020-09-24 15:10:01,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe5fa7f08/472cfd919f2f4ac49462c8fee0cb02a7 [2020-09-24 15:10:01,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:10:01,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:10:01,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:01,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:10:01,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:10:01,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:01" (1/1) ... [2020-09-24 15:10:01,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbfce76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:01, skipping insertion in model container [2020-09-24 15:10:01,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:01" (1/1) ... [2020-09-24 15:10:01,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:10:01,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:10:02,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:02,144 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:10:02,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:02,253 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:10:02,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02 WrapperNode [2020-09-24 15:10:02,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:02,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:10:02,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:10:02,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:10:02,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (1/1) ... [2020-09-24 15:10:02,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:10:02,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:10:02,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:10:02,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:10:02,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (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 [2020-09-24 15:10:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:10:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:10:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:10:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-09-24 15:10:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-09-24 15:10:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-09-24 15:10:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-09-24 15:10:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-09-24 15:10:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-09-24 15:10:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-09-24 15:10:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-09-24 15:10:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-24 15:10:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-09-24 15:10:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-09-24 15:10:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-09-24 15:10:02,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-09-24 15:10:02,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-09-24 15:10:02,464 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 15:10:02,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:10:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-09-24 15:10:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:10:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 15:10:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 15:10:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 15:10:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 15:10:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 15:10:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:10:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-09-24 15:10:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-09-24 15:10:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-09-24 15:10:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 15:10:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-09-24 15:10:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-09-24 15:10:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-09-24 15:10:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-09-24 15:10:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-09-24 15:10:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 15:10:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:10:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:10:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:10:03,567 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:10:03,568 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 15:10:03,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:03 BoogieIcfgContainer [2020-09-24 15:10:03,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:10:03,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:10:03,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:10:03,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:10:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:10:01" (1/3) ... [2020-09-24 15:10:03,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30706cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:03, skipping insertion in model container [2020-09-24 15:10:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:02" (2/3) ... [2020-09-24 15:10:03,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30706cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:03, skipping insertion in model container [2020-09-24 15:10:03,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:03" (3/3) ... [2020-09-24 15:10:03,587 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-24 15:10:03,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:10:03,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:10:03,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:10:03,668 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:10:03,669 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:10:03,669 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:10:03,669 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:10:03,669 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:10:03,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:10:03,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:10:03,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:10:03,704 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2020-09-24 15:10:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 15:10:03,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:03,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:03,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:03,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1455574608, now seen corresponding path program 1 times [2020-09-24 15:10:03,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:03,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766009012] [2020-09-24 15:10:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,486 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 15:10:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 15:10:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 15:10:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 15:10:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:04,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766009012] [2020-09-24 15:10:04,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:04,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 15:10:04,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315161275] [2020-09-24 15:10:04,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:10:04,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:05,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:10:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:10:05,009 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 14 states. [2020-09-24 15:10:05,708 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-24 15:10:06,063 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 15:10:06,269 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:10:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:10,245 INFO L93 Difference]: Finished difference Result 1058 states and 1321 transitions. [2020-09-24 15:10:10,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 15:10:10,247 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 228 [2020-09-24 15:10:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:10,272 INFO L225 Difference]: With dead ends: 1058 [2020-09-24 15:10:10,272 INFO L226 Difference]: Without dead ends: 581 [2020-09-24 15:10:10,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-09-24 15:10:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-09-24 15:10:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 553. [2020-09-24 15:10:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-09-24 15:10:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 646 transitions. [2020-09-24 15:10:10,400 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 646 transitions. Word has length 228 [2020-09-24 15:10:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:10,401 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 646 transitions. [2020-09-24 15:10:10,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:10:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 646 transitions. [2020-09-24 15:10:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 15:10:10,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:10,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:10,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:10:10,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:10,410 INFO L82 PathProgramCache]: Analyzing trace with hash 503549649, now seen corresponding path program 1 times [2020-09-24 15:10:10,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:10,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264915877] [2020-09-24 15:10:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,796 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:10:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:10:11,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264915877] [2020-09-24 15:10:11,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:11,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 15:10:11,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486880645] [2020-09-24 15:10:11,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:10:11,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:11,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:10:11,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:10:11,118 INFO L87 Difference]: Start difference. First operand 553 states and 646 transitions. Second operand 11 states. [2020-09-24 15:10:12,924 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 15:10:13,091 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-24 15:10:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:14,673 INFO L93 Difference]: Finished difference Result 982 states and 1173 transitions. [2020-09-24 15:10:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:10:14,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2020-09-24 15:10:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:14,680 INFO L225 Difference]: With dead ends: 982 [2020-09-24 15:10:14,680 INFO L226 Difference]: Without dead ends: 558 [2020-09-24 15:10:14,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-09-24 15:10:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-09-24 15:10:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2020-09-24 15:10:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-24 15:10:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 650 transitions. [2020-09-24 15:10:14,723 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 650 transitions. Word has length 239 [2020-09-24 15:10:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:14,724 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 650 transitions. [2020-09-24 15:10:14,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:10:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 650 transitions. [2020-09-24 15:10:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-24 15:10:14,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:14,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:14,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:10:14,733 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:14,734 INFO L82 PathProgramCache]: Analyzing trace with hash -734642201, now seen corresponding path program 1 times [2020-09-24 15:10:14,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:14,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541707191] [2020-09-24 15:10:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,113 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:10:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 15:10:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:10:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 15:10:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-24 15:10:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:10:15,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541707191] [2020-09-24 15:10:15,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:15,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 15:10:15,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252571628] [2020-09-24 15:10:15,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 15:10:15,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:15,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 15:10:15,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:10:15,976 INFO L87 Difference]: Start difference. First operand 558 states and 650 transitions. Second operand 16 states. [2020-09-24 15:10:16,113 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 15:10:16,893 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:10:19,109 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-24 15:10:19,350 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 15:10:19,580 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 15:10:20,109 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-24 15:10:22,336 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:10:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:22,963 INFO L93 Difference]: Finished difference Result 1187 states and 1396 transitions. [2020-09-24 15:10:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 15:10:22,964 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 312 [2020-09-24 15:10:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:22,976 INFO L225 Difference]: With dead ends: 1187 [2020-09-24 15:10:22,976 INFO L226 Difference]: Without dead ends: 758 [2020-09-24 15:10:22,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 15:10:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-09-24 15:10:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 750. [2020-09-24 15:10:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-09-24 15:10:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 867 transitions. [2020-09-24 15:10:23,046 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 867 transitions. Word has length 312 [2020-09-24 15:10:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:23,048 INFO L479 AbstractCegarLoop]: Abstraction has 750 states and 867 transitions. [2020-09-24 15:10:23,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 15:10:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 867 transitions. [2020-09-24 15:10:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-24 15:10:23,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:23,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:23,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:10:23,062 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash 679708041, now seen corresponding path program 1 times [2020-09-24 15:10:23,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:23,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573990711] [2020-09-24 15:10:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,447 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:10:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 15:10:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:10:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 15:10:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-09-24 15:10:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:10:24,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573990711] [2020-09-24 15:10:24,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:24,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 15:10:24,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073490971] [2020-09-24 15:10:24,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 15:10:24,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:24,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 15:10:24,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:10:24,262 INFO L87 Difference]: Start difference. First operand 750 states and 867 transitions. Second operand 16 states. [2020-09-24 15:10:24,408 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 15:10:25,227 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 15:10:26,158 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 15:10:27,593 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 15:10:27,859 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 15:10:28,680 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-24 15:10:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:31,659 INFO L93 Difference]: Finished difference Result 1195 states and 1406 transitions. [2020-09-24 15:10:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 15:10:31,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-09-24 15:10:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:31,665 INFO L225 Difference]: With dead ends: 1195 [2020-09-24 15:10:31,665 INFO L226 Difference]: Without dead ends: 763 [2020-09-24 15:10:31,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=591, Invalid=1959, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 15:10:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-09-24 15:10:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 750. [2020-09-24 15:10:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-09-24 15:10:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 867 transitions. [2020-09-24 15:10:31,722 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 867 transitions. Word has length 313 [2020-09-24 15:10:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:31,723 INFO L479 AbstractCegarLoop]: Abstraction has 750 states and 867 transitions. [2020-09-24 15:10:31,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 15:10:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 867 transitions. [2020-09-24 15:10:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-09-24 15:10:31,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:31,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:31,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:10:31,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:31,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1399853749, now seen corresponding path program 1 times [2020-09-24 15:10:31,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:31,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800438950] [2020-09-24 15:10:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,050 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:10:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 15:10:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:10:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 15:10:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-09-24 15:10:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:10:32,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800438950] [2020-09-24 15:10:32,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:32,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 15:10:32,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058585386] [2020-09-24 15:10:32,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:10:32,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:32,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:10:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:10:32,585 INFO L87 Difference]: Start difference. First operand 750 states and 867 transitions. Second operand 12 states. [2020-09-24 15:10:34,404 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-24 15:10:35,681 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 15:10:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:38,450 INFO L93 Difference]: Finished difference Result 1642 states and 1947 transitions. [2020-09-24 15:10:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 15:10:38,451 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 315 [2020-09-24 15:10:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:38,460 INFO L225 Difference]: With dead ends: 1642 [2020-09-24 15:10:38,460 INFO L226 Difference]: Without dead ends: 1210 [2020-09-24 15:10:38,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 15:10:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-09-24 15:10:38,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1168. [2020-09-24 15:10:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-24 15:10:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1376 transitions. [2020-09-24 15:10:38,543 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1376 transitions. Word has length 315 [2020-09-24 15:10:38,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:38,544 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1376 transitions. [2020-09-24 15:10:38,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:10:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1376 transitions. [2020-09-24 15:10:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-24 15:10:38,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:38,548 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:38,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:10:38,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:38,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:38,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1977685633, now seen corresponding path program 1 times [2020-09-24 15:10:38,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:38,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868781881] [2020-09-24 15:10:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,830 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:38,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:10:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 15:10:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:10:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 15:10:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-24 15:10:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:10:39,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868781881] [2020-09-24 15:10:39,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:39,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 15:10:39,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685169662] [2020-09-24 15:10:39,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:10:39,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:10:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:10:39,311 INFO L87 Difference]: Start difference. First operand 1168 states and 1376 transitions. Second operand 12 states. [2020-09-24 15:10:41,376 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-24 15:10:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:44,928 INFO L93 Difference]: Finished difference Result 2588 states and 3126 transitions. [2020-09-24 15:10:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 15:10:44,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 316 [2020-09-24 15:10:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:44,941 INFO L225 Difference]: With dead ends: 2588 [2020-09-24 15:10:44,941 INFO L226 Difference]: Without dead ends: 1828 [2020-09-24 15:10:44,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 15:10:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-24 15:10:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1808. [2020-09-24 15:10:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-24 15:10:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2169 transitions. [2020-09-24 15:10:45,063 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2169 transitions. Word has length 316 [2020-09-24 15:10:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:45,064 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2169 transitions. [2020-09-24 15:10:45,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:10:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2169 transitions. [2020-09-24 15:10:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-24 15:10:45,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:45,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:45,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:10:45,069 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:45,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1013367263, now seen corresponding path program 1 times [2020-09-24 15:10:45,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:45,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518462797] [2020-09-24 15:10:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,333 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 15:10:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 15:10:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:10:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 15:10:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-24 15:10:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:10:45,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518462797] [2020-09-24 15:10:45,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:45,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 15:10:45,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507540531] [2020-09-24 15:10:45,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 15:10:45,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 15:10:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:10:45,712 INFO L87 Difference]: Start difference. First operand 1808 states and 2169 transitions. Second operand 13 states. [2020-09-24 15:10:45,847 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-24 15:10:48,614 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 15:10:48,783 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-24 15:10:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:10:49,951 INFO L93 Difference]: Finished difference Result 3206 states and 3905 transitions. [2020-09-24 15:10:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 15:10:49,952 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 316 [2020-09-24 15:10:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:10:49,961 INFO L225 Difference]: With dead ends: 3206 [2020-09-24 15:10:49,961 INFO L226 Difference]: Without dead ends: 1832 [2020-09-24 15:10:49,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:10:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-09-24 15:10:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1832. [2020-09-24 15:10:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1832 states. [2020-09-24 15:10:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2189 transitions. [2020-09-24 15:10:50,079 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2189 transitions. Word has length 316 [2020-09-24 15:10:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:10:50,080 INFO L479 AbstractCegarLoop]: Abstraction has 1832 states and 2189 transitions. [2020-09-24 15:10:50,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 15:10:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2189 transitions. [2020-09-24 15:10:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-24 15:10:50,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:10:50,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:10:50,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:10:50,085 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:10:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:10:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -549026161, now seen corresponding path program 1 times [2020-09-24 15:10:50,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:10:50,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862620209] [2020-09-24 15:10:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:10:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,406 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 15:10:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:10:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 15:10:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 15:10:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 15:10:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:10:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:10:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 15:10:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:10:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-24 15:10:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:10:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 15:10:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-24 15:10:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-24 15:10:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:10:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:10:50,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862620209] [2020-09-24 15:10:50,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:10:50,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 15:10:50,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786615291] [2020-09-24 15:10:50,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:10:50,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:10:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:10:50,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:10:50,829 INFO L87 Difference]: Start difference. First operand 1832 states and 2189 transitions. Second operand 12 states. [2020-09-24 15:10:51,597 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 134