/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:41:09,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:41:09,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:41:09,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:41:09,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:41:09,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:41:09,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:41:09,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:41:09,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:41:09,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:41:09,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:41:09,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:41:09,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:41:09,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:41:09,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:41:09,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:41:09,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:41:09,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:41:09,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:41:09,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:41:09,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:41:09,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:41:09,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:41:09,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:41:09,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:41:09,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:41:09,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:41:09,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:41:09,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:41:09,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:41:09,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:41:09,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:41:09,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:41:09,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:41:09,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:41:09,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:41:09,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:41:09,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:41:09,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:41:09,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:41:09,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:41:09,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:41:09,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:41:09,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:41:09,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:41:09,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:41:09,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:41:09,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:41:09,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:41:09,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:41:09,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:41:09,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:41:09,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:41:09,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:41:09,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:41:09,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:41:09,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:41:09,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:41:09,583 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:41:09,583 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:41:09,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:41:09,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:41:09,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:41:09,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:41:09,824 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:41:09,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-01-11 06:41:09,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5650fa7d5/297f3f48fa324d80a196a1debe2a1f05/FLAG602b15060 [2022-01-11 06:41:10,298 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:41:10,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-01-11 06:41:10,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5650fa7d5/297f3f48fa324d80a196a1debe2a1f05/FLAG602b15060 [2022-01-11 06:41:10,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5650fa7d5/297f3f48fa324d80a196a1debe2a1f05 [2022-01-11 06:41:10,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:41:10,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:41:10,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:41:10,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:41:10,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:41:10,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:41:10" (1/1) ... [2022-01-11 06:41:10,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3eb28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:10, skipping insertion in model container [2022-01-11 06:41:10,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:41:10" (1/1) ... [2022-01-11 06:41:10,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:41:10,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:41:10,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2022-01-11 06:41:11,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:41:11,022 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:41:11,077 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2022-01-11 06:41:11,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:41:11,115 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:41:11,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11 WrapperNode [2022-01-11 06:41:11,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:41:11,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:41:11,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:41:11,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:41:11,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,179 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 946 [2022-01-11 06:41:11,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:41:11,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:41:11,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:41:11,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:41:11,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:41:11,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:41:11,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:41:11,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:41:11,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (1/1) ... [2022-01-11 06:41:11,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:41:11,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:41:11,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:41:11,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:41:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:41:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:41:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:41:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:41:11,438 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:41:11,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:41:12,067 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:41:12,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:41:12,073 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:41:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:41:12 BoogieIcfgContainer [2022-01-11 06:41:12,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:41:12,075 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:41:12,076 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:41:12,076 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:41:12,078 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:41:12" (1/1) ... [2022-01-11 06:41:12,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:41:12 BasicIcfg [2022-01-11 06:41:12,613 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:41:12,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:41:12,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:41:12,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:41:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:41:10" (1/4) ... [2022-01-11 06:41:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450480e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:41:12, skipping insertion in model container [2022-01-11 06:41:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:41:11" (2/4) ... [2022-01-11 06:41:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450480e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:41:12, skipping insertion in model container [2022-01-11 06:41:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:41:12" (3/4) ... [2022-01-11 06:41:12,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450480e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:41:12, skipping insertion in model container [2022-01-11 06:41:12,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:41:12" (4/4) ... [2022-01-11 06:41:12,619 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-11 06:41:12,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:41:12,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:41:12,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:41:12,667 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:41:12,667 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:41:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 255 states have (on average 1.6705882352941177) internal successors, (426), 256 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-11 06:41:12,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:12,697 INFO L514 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] [2022-01-11 06:41:12,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1976306099, now seen corresponding path program 1 times [2022-01-11 06:41:12,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:12,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241178606] [2022-01-11 06:41:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:12,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:13,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:13,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241178606] [2022-01-11 06:41:13,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241178606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:13,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:13,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:13,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113074289] [2022-01-11 06:41:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:13,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:13,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:13,166 INFO L87 Difference]: Start difference. First operand has 257 states, 255 states have (on average 1.6705882352941177) internal successors, (426), 256 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:13,258 INFO L93 Difference]: Finished difference Result 588 states and 954 transitions. [2022-01-11 06:41:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-11 06:41:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:13,279 INFO L225 Difference]: With dead ends: 588 [2022-01-11 06:41:13,279 INFO L226 Difference]: Without dead ends: 445 [2022-01-11 06:41:13,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:13,287 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 282 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:13,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 834 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-11 06:41:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 431. [2022-01-11 06:41:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6348837209302325) internal successors, (703), 430 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 703 transitions. [2022-01-11 06:41:13,351 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 703 transitions. Word has length 91 [2022-01-11 06:41:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:13,352 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 703 transitions. [2022-01-11 06:41:13,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 703 transitions. [2022-01-11 06:41:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 06:41:13,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:13,354 INFO L514 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] [2022-01-11 06:41:13,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:41:13,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1546262885, now seen corresponding path program 1 times [2022-01-11 06:41:13,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:13,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413281904] [2022-01-11 06:41:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:13,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:13,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:13,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413281904] [2022-01-11 06:41:13,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413281904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:13,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:13,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:13,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177911781] [2022-01-11 06:41:13,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:13,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:13,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:13,579 INFO L87 Difference]: Start difference. First operand 431 states and 703 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:13,620 INFO L93 Difference]: Finished difference Result 1136 states and 1829 transitions. [2022-01-11 06:41:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:13,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-11 06:41:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:13,623 INFO L225 Difference]: With dead ends: 1136 [2022-01-11 06:41:13,623 INFO L226 Difference]: Without dead ends: 772 [2022-01-11 06:41:13,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:13,631 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 345 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:13,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 864 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-01-11 06:41:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 770. [2022-01-11 06:41:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.611183355006502) internal successors, (1239), 769 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1239 transitions. [2022-01-11 06:41:13,655 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1239 transitions. Word has length 92 [2022-01-11 06:41:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:13,657 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1239 transitions. [2022-01-11 06:41:13,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1239 transitions. [2022-01-11 06:41:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-11 06:41:13,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:13,662 INFO L514 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] [2022-01-11 06:41:13,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:41:13,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash -204559442, now seen corresponding path program 1 times [2022-01-11 06:41:13,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:13,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549176549] [2022-01-11 06:41:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:13,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:13,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:13,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549176549] [2022-01-11 06:41:13,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549176549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:13,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:13,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:13,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706113982] [2022-01-11 06:41:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:13,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:13,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:13,842 INFO L87 Difference]: Start difference. First operand 770 states and 1239 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:13,884 INFO L93 Difference]: Finished difference Result 1927 states and 3080 transitions. [2022-01-11 06:41:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-11 06:41:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:13,890 INFO L225 Difference]: With dead ends: 1927 [2022-01-11 06:41:13,890 INFO L226 Difference]: Without dead ends: 1373 [2022-01-11 06:41:13,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:13,895 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 328 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:13,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 880 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-01-11 06:41:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1371. [2022-01-11 06:41:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 1.5934306569343066) internal successors, (2183), 1370 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2183 transitions. [2022-01-11 06:41:13,923 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2183 transitions. Word has length 93 [2022-01-11 06:41:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:13,923 INFO L470 AbstractCegarLoop]: Abstraction has 1371 states and 2183 transitions. [2022-01-11 06:41:13,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2183 transitions. [2022-01-11 06:41:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 06:41:13,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:13,929 INFO L514 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] [2022-01-11 06:41:13,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:41:13,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash -294727139, now seen corresponding path program 1 times [2022-01-11 06:41:13,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:13,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100530345] [2022-01-11 06:41:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:13,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:14,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:14,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100530345] [2022-01-11 06:41:14,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100530345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:14,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:14,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:14,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68253220] [2022-01-11 06:41:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:14,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:14,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:14,032 INFO L87 Difference]: Start difference. First operand 1371 states and 2183 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:14,096 INFO L93 Difference]: Finished difference Result 3312 states and 5258 transitions. [2022-01-11 06:41:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:14,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-11 06:41:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:14,103 INFO L225 Difference]: With dead ends: 3312 [2022-01-11 06:41:14,103 INFO L226 Difference]: Without dead ends: 2414 [2022-01-11 06:41:14,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:14,105 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 311 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:14,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 896 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:14,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-01-11 06:41:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2412. [2022-01-11 06:41:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2411 states have (on average 1.5790128577353795) internal successors, (3807), 2411 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3807 transitions. [2022-01-11 06:41:14,150 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3807 transitions. Word has length 94 [2022-01-11 06:41:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:14,151 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3807 transitions. [2022-01-11 06:41:14,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3807 transitions. [2022-01-11 06:41:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 06:41:14,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:14,154 INFO L514 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] [2022-01-11 06:41:14,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:41:14,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 345613232, now seen corresponding path program 1 times [2022-01-11 06:41:14,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:14,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978413900] [2022-01-11 06:41:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:14,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:14,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:14,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978413900] [2022-01-11 06:41:14,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978413900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:14,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:14,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:14,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172050741] [2022-01-11 06:41:14,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:14,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:14,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:14,267 INFO L87 Difference]: Start difference. First operand 2412 states and 3807 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:14,350 INFO L93 Difference]: Finished difference Result 5673 states and 8942 transitions. [2022-01-11 06:41:14,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:14,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-11 06:41:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:14,363 INFO L225 Difference]: With dead ends: 5673 [2022-01-11 06:41:14,363 INFO L226 Difference]: Without dead ends: 4179 [2022-01-11 06:41:14,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:14,366 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 294 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:14,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 912 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2022-01-11 06:41:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 4177. [2022-01-11 06:41:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4176 states have (on average 1.5648946360153257) internal successors, (6535), 4176 states have internal predecessors, (6535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 6535 transitions. [2022-01-11 06:41:14,471 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 6535 transitions. Word has length 95 [2022-01-11 06:41:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:14,471 INFO L470 AbstractCegarLoop]: Abstraction has 4177 states and 6535 transitions. [2022-01-11 06:41:14,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 6535 transitions. [2022-01-11 06:41:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-11 06:41:14,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:14,477 INFO L514 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] [2022-01-11 06:41:14,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:41:14,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1980919905, now seen corresponding path program 1 times [2022-01-11 06:41:14,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:14,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168844614] [2022-01-11 06:41:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:14,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:14,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:14,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168844614] [2022-01-11 06:41:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168844614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:14,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:14,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:14,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605475843] [2022-01-11 06:41:14,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:14,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:14,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:14,614 INFO L87 Difference]: Start difference. First operand 4177 states and 6535 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:14,762 INFO L93 Difference]: Finished difference Result 9574 states and 14958 transitions. [2022-01-11 06:41:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-01-11 06:41:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:14,786 INFO L225 Difference]: With dead ends: 9574 [2022-01-11 06:41:14,786 INFO L226 Difference]: Without dead ends: 7092 [2022-01-11 06:41:14,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:14,791 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 277 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:14,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 928 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2022-01-11 06:41:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 7090. [2022-01-11 06:41:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.5481732261249823) internal successors, (10975), 7089 states have internal predecessors, (10975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 10975 transitions. [2022-01-11 06:41:14,974 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 10975 transitions. Word has length 96 [2022-01-11 06:41:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:14,975 INFO L470 AbstractCegarLoop]: Abstraction has 7090 states and 10975 transitions. [2022-01-11 06:41:14,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 10975 transitions. [2022-01-11 06:41:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-11 06:41:14,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:14,988 INFO L514 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] [2022-01-11 06:41:14,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:41:14,988 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 116559282, now seen corresponding path program 1 times [2022-01-11 06:41:14,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:14,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145703536] [2022-01-11 06:41:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:14,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:15,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:15,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145703536] [2022-01-11 06:41:15,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145703536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:15,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:15,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:41:15,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216944707] [2022-01-11 06:41:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:15,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:41:15,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:41:15,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:41:15,178 INFO L87 Difference]: Start difference. First operand 7090 states and 10975 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:15,372 INFO L93 Difference]: Finished difference Result 11205 states and 17393 transitions. [2022-01-11 06:41:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:41:15,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-01-11 06:41:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:15,384 INFO L225 Difference]: With dead ends: 11205 [2022-01-11 06:41:15,385 INFO L226 Difference]: Without dead ends: 4157 [2022-01-11 06:41:15,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:41:15,394 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 297 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:15,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 797 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:41:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2022-01-11 06:41:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4157. [2022-01-11 06:41:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4157 states, 4156 states have (on average 1.5543792107795957) internal successors, (6460), 4156 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 6460 transitions. [2022-01-11 06:41:15,550 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 6460 transitions. Word has length 97 [2022-01-11 06:41:15,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:15,550 INFO L470 AbstractCegarLoop]: Abstraction has 4157 states and 6460 transitions. [2022-01-11 06:41:15,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 6460 transitions. [2022-01-11 06:41:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:41:15,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:15,558 INFO L514 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] [2022-01-11 06:41:15,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:41:15,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash -406181922, now seen corresponding path program 1 times [2022-01-11 06:41:15,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:15,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251955012] [2022-01-11 06:41:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:15,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:15,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:15,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251955012] [2022-01-11 06:41:15,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251955012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:15,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:15,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:15,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306705942] [2022-01-11 06:41:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:15,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:15,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:15,736 INFO L87 Difference]: Start difference. First operand 4157 states and 6460 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:17,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:18,038 INFO L93 Difference]: Finished difference Result 8231 states and 12820 transitions. [2022-01-11 06:41:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:18,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-01-11 06:41:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:18,057 INFO L225 Difference]: With dead ends: 8231 [2022-01-11 06:41:18,058 INFO L226 Difference]: Without dead ends: 4158 [2022-01-11 06:41:18,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:18,062 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 26 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:18,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 601 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:41:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-01-11 06:41:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4157. [2022-01-11 06:41:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4157 states, 4156 states have (on average 1.5534167468719924) internal successors, (6456), 4156 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 6456 transitions. [2022-01-11 06:41:18,187 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 6456 transitions. Word has length 141 [2022-01-11 06:41:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:18,187 INFO L470 AbstractCegarLoop]: Abstraction has 4157 states and 6456 transitions. [2022-01-11 06:41:18,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 6456 transitions. [2022-01-11 06:41:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:41:18,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:18,194 INFO L514 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] [2022-01-11 06:41:18,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:41:18,194 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash -614880225, now seen corresponding path program 1 times [2022-01-11 06:41:18,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690729184] [2022-01-11 06:41:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:18,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:18,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:18,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690729184] [2022-01-11 06:41:18,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690729184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:18,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:18,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:18,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516432581] [2022-01-11 06:41:18,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:18,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:18,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:18,403 INFO L87 Difference]: Start difference. First operand 4157 states and 6456 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:19,180 INFO L93 Difference]: Finished difference Result 11661 states and 18124 transitions. [2022-01-11 06:41:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-01-11 06:41:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:19,200 INFO L225 Difference]: With dead ends: 11661 [2022-01-11 06:41:19,200 INFO L226 Difference]: Without dead ends: 8217 [2022-01-11 06:41:19,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:19,205 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 202 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:19,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 428 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 06:41:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2022-01-11 06:41:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8215. [2022-01-11 06:41:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8215 states, 8214 states have (on average 1.5505234964694423) internal successors, (12736), 8214 states have internal predecessors, (12736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 12736 transitions. [2022-01-11 06:41:19,518 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 12736 transitions. Word has length 141 [2022-01-11 06:41:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:19,518 INFO L470 AbstractCegarLoop]: Abstraction has 8215 states and 12736 transitions. [2022-01-11 06:41:19,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 12736 transitions. [2022-01-11 06:41:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:41:19,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:19,530 INFO L514 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] [2022-01-11 06:41:19,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:41:19,530 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1053611264, now seen corresponding path program 1 times [2022-01-11 06:41:19,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:19,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126515397] [2022-01-11 06:41:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:19,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:19,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126515397] [2022-01-11 06:41:19,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126515397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:19,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:19,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:19,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766025277] [2022-01-11 06:41:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:19,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:19,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:19,665 INFO L87 Difference]: Start difference. First operand 8215 states and 12736 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:20,694 INFO L93 Difference]: Finished difference Result 23009 states and 35640 transitions. [2022-01-11 06:41:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:20,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-01-11 06:41:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:20,724 INFO L225 Difference]: With dead ends: 23009 [2022-01-11 06:41:20,724 INFO L226 Difference]: Without dead ends: 16239 [2022-01-11 06:41:20,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:20,734 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 186 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:20,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 438 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:41:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16239 states. [2022-01-11 06:41:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16239 to 16237. [2022-01-11 06:41:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16237 states, 16236 states have (on average 1.5455777285045578) internal successors, (25094), 16236 states have internal predecessors, (25094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16237 states to 16237 states and 25094 transitions. [2022-01-11 06:41:21,573 INFO L78 Accepts]: Start accepts. Automaton has 16237 states and 25094 transitions. Word has length 141 [2022-01-11 06:41:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:21,573 INFO L470 AbstractCegarLoop]: Abstraction has 16237 states and 25094 transitions. [2022-01-11 06:41:21,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16237 states and 25094 transitions. [2022-01-11 06:41:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:41:21,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:21,601 INFO L514 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] [2022-01-11 06:41:21,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:41:21,601 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1531808991, now seen corresponding path program 1 times [2022-01-11 06:41:21,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661847486] [2022-01-11 06:41:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:21,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:21,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:21,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661847486] [2022-01-11 06:41:21,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661847486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:21,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:21,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:21,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309148154] [2022-01-11 06:41:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:21,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:21,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:21,763 INFO L87 Difference]: Start difference. First operand 16237 states and 25094 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:23,659 INFO L93 Difference]: Finished difference Result 44813 states and 68996 transitions. [2022-01-11 06:41:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-01-11 06:41:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:23,715 INFO L225 Difference]: With dead ends: 44813 [2022-01-11 06:41:23,715 INFO L226 Difference]: Without dead ends: 32011 [2022-01-11 06:41:23,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:23,734 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 170 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:23,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 448 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:41:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32011 states. [2022-01-11 06:41:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32011 to 32009. [2022-01-11 06:41:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32009 states, 32008 states have (on average 1.5356785803549113) internal successors, (49154), 32008 states have internal predecessors, (49154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32009 states to 32009 states and 49154 transitions. [2022-01-11 06:41:25,448 INFO L78 Accepts]: Start accepts. Automaton has 32009 states and 49154 transitions. Word has length 141 [2022-01-11 06:41:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:25,449 INFO L470 AbstractCegarLoop]: Abstraction has 32009 states and 49154 transitions. [2022-01-11 06:41:25,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 32009 states and 49154 transitions. [2022-01-11 06:41:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:41:25,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:25,543 INFO L514 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] [2022-01-11 06:41:25,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:41:25,547 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1986008706, now seen corresponding path program 1 times [2022-01-11 06:41:25,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:25,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139533650] [2022-01-11 06:41:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:25,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:26,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139533650] [2022-01-11 06:41:26,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139533650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:26,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:26,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:41:26,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195515567] [2022-01-11 06:41:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:26,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:41:26,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:41:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:41:26,183 INFO L87 Difference]: Start difference. First operand 32009 states and 49154 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:28,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:31,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:36,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:39,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:41,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:51,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:54,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:56,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:42:01,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:42:03,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:42:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:42:05,132 INFO L93 Difference]: Finished difference Result 123229 states and 188126 transitions. [2022-01-11 06:42:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:42:05,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-01-11 06:42:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:42:05,276 INFO L225 Difference]: With dead ends: 123229 [2022-01-11 06:42:05,276 INFO L226 Difference]: Without dead ends: 93267 [2022-01-11 06:42:05,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:42:05,318 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 3200 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 27 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:42:05,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3200 Valid, 1316 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 953 Invalid, 10 Unknown, 0 Unchecked, 25.5s Time] [2022-01-11 06:42:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93267 states. [2022-01-11 06:42:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93267 to 44442. [2022-01-11 06:42:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44442 states, 44441 states have (on average 1.5252807092549672) internal successors, (67785), 44441 states have internal predecessors, (67785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:42:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44442 states to 44442 states and 67785 transitions. [2022-01-11 06:42:13,813 INFO L78 Accepts]: Start accepts. Automaton has 44442 states and 67785 transitions. Word has length 141 [2022-01-11 06:42:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:42:13,814 INFO L470 AbstractCegarLoop]: Abstraction has 44442 states and 67785 transitions. [2022-01-11 06:42:13,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:42:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 44442 states and 67785 transitions. [2022-01-11 06:42:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 06:42:13,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:42:13,872 INFO L514 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] [2022-01-11 06:42:13,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:42:13,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:42:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:42:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1947883170, now seen corresponding path program 1 times [2022-01-11 06:42:13,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:42:13,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3664447] [2022-01-11 06:42:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:42:13,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:42:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:42:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:42:14,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:42:14,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3664447] [2022-01-11 06:42:14,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3664447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:42:14,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:42:14,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:42:14,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075072058] [2022-01-11 06:42:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:42:14,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:42:14,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:42:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:42:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:42:14,368 INFO L87 Difference]: Start difference. First operand 44442 states and 67785 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:42:16,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:42:19,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []