/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:56:13,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:56:13,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:56:13,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:56:13,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:56:13,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:56:13,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:56:13,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:56:13,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:56:13,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:56:13,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:56:13,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:56:13,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:56:13,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:56:13,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:56:13,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:56:13,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:56:13,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:56:13,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:56:13,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:56:13,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:56:13,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:56:13,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:56:13,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:56:13,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:56:13,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:56:13,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:56:13,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:56:13,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:56:13,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:56:13,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:56:13,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:56:13,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:56:13,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:56:13,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:56:13,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:56:13,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:56:13,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:56:13,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:56:13,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:56:13,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:56:13,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:56:13,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:56:13,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:56:13,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:56:13,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:56:13,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:56:13,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:56:13,686 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:56:13,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:56:13,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:56:13,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:56:13,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:56:13,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:56:13,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:56:13,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:56:13,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:56:13,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:56:13,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:56:13,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:56:13,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:56:13,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:56:13,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:56:13,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:56:13,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:56:13,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:56:13,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:56:13,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:56:13,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:56:13,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:56:13,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:56:13,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:56:13,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:56:13,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:56:13,692 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:56:13,692 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:56:13,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:56:13,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:56:13,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:56:13,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:56:13,959 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:56:13,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-11 00:56:14,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6263e0f/dda957a674ab4f45bc6f7a87a50c047f/FLAG2ab3db10e [2022-01-11 00:56:14,478 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:56:14,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-11 00:56:14,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6263e0f/dda957a674ab4f45bc6f7a87a50c047f/FLAG2ab3db10e [2022-01-11 00:56:14,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6263e0f/dda957a674ab4f45bc6f7a87a50c047f [2022-01-11 00:56:14,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:56:14,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:56:14,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:56:14,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:56:14,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:56:14,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:56:14" (1/1) ... [2022-01-11 00:56:14,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d558e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:14, skipping insertion in model container [2022-01-11 00:56:14,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:56:14" (1/1) ... [2022-01-11 00:56:14,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:56:14,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:56:15,081 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_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7638,7651] [2022-01-11 00:56:15,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:56:15,118 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:56:15,170 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_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7638,7651] [2022-01-11 00:56:15,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:56:15,201 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:56:15,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15 WrapperNode [2022-01-11 00:56:15,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:56:15,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:56:15,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:56:15,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:56:15,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,255 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 597 [2022-01-11 00:56:15,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:56:15,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:56:15,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:56:15,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:56:15,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:56:15,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:56:15,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:56:15,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:56:15,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (1/1) ... [2022-01-11 00:56:15,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:56:15,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:56:15,337 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 00:56:15,350 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 00:56:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:56:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:56:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:56:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:56:15,560 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:56:15,561 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:56:16,009 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:56:16,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:56:16,016 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:56:16,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:56:16 BoogieIcfgContainer [2022-01-11 00:56:16,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:56:16,019 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:56:16,019 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:56:16,035 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:56:16,038 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:56:16" (1/1) ... [2022-01-11 00:56:16,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:56:16 BasicIcfg [2022-01-11 00:56:16,473 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:56:16,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:56:16,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:56:16,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:56:16,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:56:14" (1/4) ... [2022-01-11 00:56:16,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fe941d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:56:16, skipping insertion in model container [2022-01-11 00:56:16,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:56:15" (2/4) ... [2022-01-11 00:56:16,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fe941d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:56:16, skipping insertion in model container [2022-01-11 00:56:16,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:56:16" (3/4) ... [2022-01-11 00:56:16,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fe941d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:56:16, skipping insertion in model container [2022-01-11 00:56:16,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:56:16" (4/4) ... [2022-01-11 00:56:16,483 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:56:16,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:56:16,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:56:16,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:56:16,555 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 00:56:16,555 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:56:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.75177304964539) internal successors, (247), 142 states have internal predecessors, (247), 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 00:56:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 00:56:16,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:16,585 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] [2022-01-11 00:56:16,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1179207333, now seen corresponding path program 1 times [2022-01-11 00:56:16,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45226718] [2022-01-11 00:56:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:16,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:17,283 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 00:56:17,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45226718] [2022-01-11 00:56:17,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45226718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:17,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:17,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:17,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075469896] [2022-01-11 00:56:17,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:17,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:17,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:17,330 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.75177304964539) internal successors, (247), 142 states have internal predecessors, (247), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 00:56:19,391 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 00:56:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:19,596 INFO L93 Difference]: Finished difference Result 317 states and 535 transitions. [2022-01-11 00:56:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-01-11 00:56:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:19,608 INFO L225 Difference]: With dead ends: 317 [2022-01-11 00:56:19,608 INFO L226 Difference]: Without dead ends: 219 [2022-01-11 00:56:19,610 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 00:56:19,613 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 144 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:19,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 440 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:56:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-01-11 00:56:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2022-01-11 00:56:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.587962962962963) internal successors, (343), 216 states have internal predecessors, (343), 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 00:56:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2022-01-11 00:56:19,675 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 56 [2022-01-11 00:56:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:19,676 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2022-01-11 00:56:19,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 00:56:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2022-01-11 00:56:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 00:56:19,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:19,684 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] [2022-01-11 00:56:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:56:19,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 610454818, now seen corresponding path program 1 times [2022-01-11 00:56:19,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:19,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196980396] [2022-01-11 00:56:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:19,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:19,890 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 00:56:19,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:19,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196980396] [2022-01-11 00:56:19,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196980396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:19,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:19,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:56:19,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67809838] [2022-01-11 00:56:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:19,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:56:19,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:56:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:56:19,899 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 00:56:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:20,019 INFO L93 Difference]: Finished difference Result 608 states and 956 transitions. [2022-01-11 00:56:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:56:20,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2022-01-11 00:56:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:20,024 INFO L225 Difference]: With dead ends: 608 [2022-01-11 00:56:20,025 INFO L226 Difference]: Without dead ends: 416 [2022-01-11 00:56:20,028 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 00:56:20,029 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 569 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:20,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 412 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-01-11 00:56:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 414. [2022-01-11 00:56:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.5738498789346247) internal successors, (650), 413 states have internal predecessors, (650), 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 00:56:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 650 transitions. [2022-01-11 00:56:20,094 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 650 transitions. Word has length 58 [2022-01-11 00:56:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:20,095 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 650 transitions. [2022-01-11 00:56:20,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 00:56:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 650 transitions. [2022-01-11 00:56:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:56:20,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:20,119 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] [2022-01-11 00:56:20,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:56:20,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1107100588, now seen corresponding path program 1 times [2022-01-11 00:56:20,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264286077] [2022-01-11 00:56:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:20,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:20,284 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 00:56:20,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264286077] [2022-01-11 00:56:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264286077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:20,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:20,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:20,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049405618] [2022-01-11 00:56:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:20,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:20,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:20,286 INFO L87 Difference]: Start difference. First operand 414 states and 650 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:20,354 INFO L93 Difference]: Finished difference Result 719 states and 1161 transitions. [2022-01-11 00:56:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:20,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-01-11 00:56:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:20,357 INFO L225 Difference]: With dead ends: 719 [2022-01-11 00:56:20,357 INFO L226 Difference]: Without dead ends: 549 [2022-01-11 00:56:20,360 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 00:56:20,363 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 132 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:20,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 501 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-11 00:56:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 547. [2022-01-11 00:56:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.5952380952380953) internal successors, (871), 546 states have internal predecessors, (871), 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 00:56:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 871 transitions. [2022-01-11 00:56:20,408 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 871 transitions. Word has length 59 [2022-01-11 00:56:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:20,409 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 871 transitions. [2022-01-11 00:56:20,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 871 transitions. [2022-01-11 00:56:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:56:20,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:20,411 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] [2022-01-11 00:56:20,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:56:20,411 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:20,412 INFO L85 PathProgramCache]: Analyzing trace with hash 385788859, now seen corresponding path program 1 times [2022-01-11 00:56:20,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:20,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540136662] [2022-01-11 00:56:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:20,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:20,547 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 00:56:20,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:20,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540136662] [2022-01-11 00:56:20,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540136662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:20,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:20,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:20,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347356278] [2022-01-11 00:56:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:20,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:20,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:20,551 INFO L87 Difference]: Start difference. First operand 547 states and 871 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:20,614 INFO L93 Difference]: Finished difference Result 1146 states and 1868 transitions. [2022-01-11 00:56:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-01-11 00:56:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:20,618 INFO L225 Difference]: With dead ends: 1146 [2022-01-11 00:56:20,618 INFO L226 Difference]: Without dead ends: 699 [2022-01-11 00:56:20,621 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 00:56:20,627 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 137 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:20,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 420 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-01-11 00:56:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 687. [2022-01-11 00:56:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.6078717201166182) internal successors, (1103), 686 states have internal predecessors, (1103), 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 00:56:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1103 transitions. [2022-01-11 00:56:20,703 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1103 transitions. Word has length 59 [2022-01-11 00:56:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:20,704 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1103 transitions. [2022-01-11 00:56:20,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1103 transitions. [2022-01-11 00:56:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:56:20,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:20,706 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] [2022-01-11 00:56:20,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:56:20,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash -662245120, now seen corresponding path program 1 times [2022-01-11 00:56:20,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:20,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126486802] [2022-01-11 00:56:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:20,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:20,796 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 00:56:20,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:20,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126486802] [2022-01-11 00:56:20,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126486802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:20,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:20,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:20,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80665465] [2022-01-11 00:56:20,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:20,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:20,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:20,798 INFO L87 Difference]: Start difference. First operand 687 states and 1103 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:20,891 INFO L93 Difference]: Finished difference Result 2023 states and 3245 transitions. [2022-01-11 00:56:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-01-11 00:56:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:20,899 INFO L225 Difference]: With dead ends: 2023 [2022-01-11 00:56:20,899 INFO L226 Difference]: Without dead ends: 1364 [2022-01-11 00:56:20,900 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 00:56:20,901 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 207 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:20,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 631 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-01-11 00:56:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 689. [2022-01-11 00:56:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.6061046511627908) internal successors, (1105), 688 states have internal predecessors, (1105), 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 00:56:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1105 transitions. [2022-01-11 00:56:20,969 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1105 transitions. Word has length 59 [2022-01-11 00:56:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:20,972 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1105 transitions. [2022-01-11 00:56:20,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 00:56:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1105 transitions. [2022-01-11 00:56:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 00:56:20,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:20,974 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] [2022-01-11 00:56:20,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:56:20,975 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:20,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1633824637, now seen corresponding path program 1 times [2022-01-11 00:56:20,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:20,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537239288] [2022-01-11 00:56:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:20,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:21,122 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 00:56:21,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537239288] [2022-01-11 00:56:21,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537239288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:21,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:21,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:56:21,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078789869] [2022-01-11 00:56:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:21,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:56:21,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:56:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:56:21,124 INFO L87 Difference]: Start difference. First operand 689 states and 1105 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 00:56:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:21,347 INFO L93 Difference]: Finished difference Result 2603 states and 4168 transitions. [2022-01-11 00:56:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:56:21,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2022-01-11 00:56:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:21,356 INFO L225 Difference]: With dead ends: 2603 [2022-01-11 00:56:21,356 INFO L226 Difference]: Without dead ends: 1926 [2022-01-11 00:56:21,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:56:21,358 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 642 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:21,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 918 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-01-11 00:56:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1265. [2022-01-11 00:56:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.5886075949367089) internal successors, (2008), 1264 states have internal predecessors, (2008), 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 00:56:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2008 transitions. [2022-01-11 00:56:21,489 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2008 transitions. Word has length 60 [2022-01-11 00:56:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:21,489 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 2008 transitions. [2022-01-11 00:56:21,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 00:56:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2008 transitions. [2022-01-11 00:56:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 00:56:21,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:21,490 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] [2022-01-11 00:56:21,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:56:21,490 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1025710367, now seen corresponding path program 1 times [2022-01-11 00:56:21,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737808434] [2022-01-11 00:56:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:21,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:21,695 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 00:56:21,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:21,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737808434] [2022-01-11 00:56:21,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737808434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:21,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:21,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:21,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706452426] [2022-01-11 00:56:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:21,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:21,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:21,698 INFO L87 Difference]: Start difference. First operand 1265 states and 2008 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 00:56:23,726 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 00:56:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:24,128 INFO L93 Difference]: Finished difference Result 3302 states and 5354 transitions. [2022-01-11 00:56:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-11 00:56:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:24,139 INFO L225 Difference]: With dead ends: 3302 [2022-01-11 00:56:24,139 INFO L226 Difference]: Without dead ends: 2227 [2022-01-11 00:56:24,141 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 00:56:24,142 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:24,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 420 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:56:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-01-11 00:56:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2225. [2022-01-11 00:56:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2224 states have (on average 1.6056654676258992) internal successors, (3571), 2224 states have internal predecessors, (3571), 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 00:56:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3571 transitions. [2022-01-11 00:56:24,407 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3571 transitions. Word has length 60 [2022-01-11 00:56:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:24,407 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 3571 transitions. [2022-01-11 00:56:24,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 00:56:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3571 transitions. [2022-01-11 00:56:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 00:56:24,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:24,409 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] [2022-01-11 00:56:24,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:56:24,409 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:24,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1868667063, now seen corresponding path program 1 times [2022-01-11 00:56:24,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:24,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924849071] [2022-01-11 00:56:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:24,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:24,508 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 00:56:24,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:24,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924849071] [2022-01-11 00:56:24,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924849071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:24,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:24,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:56:24,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976639130] [2022-01-11 00:56:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:24,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:56:24,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:56:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:56:24,510 INFO L87 Difference]: Start difference. First operand 2225 states and 3571 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 00:56:25,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:25,032 INFO L93 Difference]: Finished difference Result 6421 states and 10299 transitions. [2022-01-11 00:56:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:56:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2022-01-11 00:56:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:25,048 INFO L225 Difference]: With dead ends: 6421 [2022-01-11 00:56:25,048 INFO L226 Difference]: Without dead ends: 4258 [2022-01-11 00:56:25,053 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 00:56:25,054 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 533 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:25,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 412 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2022-01-11 00:56:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 4256. [2022-01-11 00:56:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 1.5952996474735606) internal successors, (6788), 4255 states have internal predecessors, (6788), 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 00:56:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 6788 transitions. [2022-01-11 00:56:25,483 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 6788 transitions. Word has length 62 [2022-01-11 00:56:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:25,483 INFO L470 AbstractCegarLoop]: Abstraction has 4256 states and 6788 transitions. [2022-01-11 00:56:25,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 00:56:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 6788 transitions. [2022-01-11 00:56:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:56:25,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:25,486 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] [2022-01-11 00:56:25,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:56:25,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1513924228, now seen corresponding path program 1 times [2022-01-11 00:56:25,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:25,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745885668] [2022-01-11 00:56:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:25,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:25,557 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 00:56:25,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:25,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745885668] [2022-01-11 00:56:25,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745885668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:25,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:25,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:25,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846019986] [2022-01-11 00:56:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:25,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:25,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:25,559 INFO L87 Difference]: Start difference. First operand 4256 states and 6788 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:27,703 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 00:56:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:28,226 INFO L93 Difference]: Finished difference Result 7911 states and 12749 transitions. [2022-01-11 00:56:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-11 00:56:28,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:28,249 INFO L225 Difference]: With dead ends: 7911 [2022-01-11 00:56:28,249 INFO L226 Difference]: Without dead ends: 5842 [2022-01-11 00:56:28,254 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 00:56:28,256 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 126 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:28,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 488 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 00:56:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2022-01-11 00:56:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5840. [2022-01-11 00:56:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5839 states have (on average 1.5968487754752525) internal successors, (9324), 5839 states have internal predecessors, (9324), 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 00:56:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 9324 transitions. [2022-01-11 00:56:28,867 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 9324 transitions. Word has length 63 [2022-01-11 00:56:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:28,867 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 9324 transitions. [2022-01-11 00:56:28,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 9324 transitions. [2022-01-11 00:56:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:56:28,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:28,873 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] [2022-01-11 00:56:28,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:56:28,874 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1083097868, now seen corresponding path program 1 times [2022-01-11 00:56:28,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:28,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507117569] [2022-01-11 00:56:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:28,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:28,962 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 00:56:28,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:28,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507117569] [2022-01-11 00:56:28,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507117569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:28,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:28,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:28,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172884850] [2022-01-11 00:56:28,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:28,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:28,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:28,967 INFO L87 Difference]: Start difference. First operand 5840 states and 9324 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:29,612 INFO L93 Difference]: Finished difference Result 13045 states and 21079 transitions. [2022-01-11 00:56:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-11 00:56:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:29,644 INFO L225 Difference]: With dead ends: 13045 [2022-01-11 00:56:29,644 INFO L226 Difference]: Without dead ends: 7639 [2022-01-11 00:56:29,653 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 00:56:29,654 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 131 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:29,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 413 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2022-01-11 00:56:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7501. [2022-01-11 00:56:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7501 states, 7500 states have (on average 1.5964) internal successors, (11973), 7500 states have internal predecessors, (11973), 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 00:56:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 11973 transitions. [2022-01-11 00:56:30,495 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 11973 transitions. Word has length 63 [2022-01-11 00:56:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:30,495 INFO L470 AbstractCegarLoop]: Abstraction has 7501 states and 11973 transitions. [2022-01-11 00:56:30,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 11973 transitions. [2022-01-11 00:56:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:56:30,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:30,498 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] [2022-01-11 00:56:30,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:56:30,499 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1813760057, now seen corresponding path program 1 times [2022-01-11 00:56:30,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:30,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595699643] [2022-01-11 00:56:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:30,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:30,547 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 00:56:30,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:30,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595699643] [2022-01-11 00:56:30,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595699643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:30,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:30,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:30,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902213312] [2022-01-11 00:56:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:30,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:30,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:30,550 INFO L87 Difference]: Start difference. First operand 7501 states and 11973 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:31,542 INFO L93 Difference]: Finished difference Result 22379 states and 35717 transitions. [2022-01-11 00:56:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-11 00:56:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:31,587 INFO L225 Difference]: With dead ends: 22379 [2022-01-11 00:56:31,587 INFO L226 Difference]: Without dead ends: 14952 [2022-01-11 00:56:31,601 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 00:56:31,601 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 193 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:31,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 617 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14952 states. [2022-01-11 00:56:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14952 to 7509. [2022-01-11 00:56:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7509 states, 7508 states have (on average 1.5957645178476292) internal successors, (11981), 7508 states have internal predecessors, (11981), 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 00:56:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7509 states to 7509 states and 11981 transitions. [2022-01-11 00:56:32,342 INFO L78 Accepts]: Start accepts. Automaton has 7509 states and 11981 transitions. Word has length 63 [2022-01-11 00:56:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:32,342 INFO L470 AbstractCegarLoop]: Abstraction has 7509 states and 11981 transitions. [2022-01-11 00:56:32,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 00:56:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7509 states and 11981 transitions. [2022-01-11 00:56:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:56:32,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:32,344 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] [2022-01-11 00:56:32,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:56:32,345 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:32,345 INFO L85 PathProgramCache]: Analyzing trace with hash -184399772, now seen corresponding path program 1 times [2022-01-11 00:56:32,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:32,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645748761] [2022-01-11 00:56:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:32,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:32,480 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 00:56:32,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:32,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645748761] [2022-01-11 00:56:32,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645748761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:32,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:32,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:56:32,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508299173] [2022-01-11 00:56:32,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:32,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:56:32,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:56:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:56:32,482 INFO L87 Difference]: Start difference. First operand 7509 states and 11981 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 00:56:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:34,133 INFO L93 Difference]: Finished difference Result 28393 states and 45364 transitions. [2022-01-11 00:56:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:56:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2022-01-11 00:56:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:34,190 INFO L225 Difference]: With dead ends: 28393 [2022-01-11 00:56:34,191 INFO L226 Difference]: Without dead ends: 20942 [2022-01-11 00:56:34,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:56:34,211 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 551 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:34,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 917 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:56:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20942 states. [2022-01-11 00:56:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20942 to 13719. [2022-01-11 00:56:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13719 states, 13718 states have (on average 1.5774894299460562) internal successors, (21640), 13718 states have internal predecessors, (21640), 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 00:56:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13719 states to 13719 states and 21640 transitions. [2022-01-11 00:56:35,612 INFO L78 Accepts]: Start accepts. Automaton has 13719 states and 21640 transitions. Word has length 64 [2022-01-11 00:56:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:35,612 INFO L470 AbstractCegarLoop]: Abstraction has 13719 states and 21640 transitions. [2022-01-11 00:56:35,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 00:56:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 13719 states and 21640 transitions. [2022-01-11 00:56:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:56:35,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:35,615 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] [2022-01-11 00:56:35,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:56:35,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -473200440, now seen corresponding path program 1 times [2022-01-11 00:56:35,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:35,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853812745] [2022-01-11 00:56:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:35,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:35,772 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 00:56:35,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853812745] [2022-01-11 00:56:35,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853812745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:35,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:35,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:35,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151840180] [2022-01-11 00:56:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:35,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:35,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:35,775 INFO L87 Difference]: Start difference. First operand 13719 states and 21640 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 00:56:37,884 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 00:56:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:40,465 INFO L93 Difference]: Finished difference Result 37911 states and 60440 transitions. [2022-01-11 00:56:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:56:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-11 00:56:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:40,531 INFO L225 Difference]: With dead ends: 37911 [2022-01-11 00:56:40,531 INFO L226 Difference]: Without dead ends: 25020 [2022-01-11 00:56:40,551 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 00:56:40,552 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:40,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 424 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:56:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25020 states. [2022-01-11 00:56:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25020 to 25018. [2022-01-11 00:56:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25018 states, 25017 states have (on average 1.5816844545708917) internal successors, (39569), 25017 states have internal predecessors, (39569), 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 00:56:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 39569 transitions. [2022-01-11 00:56:43,537 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 39569 transitions. Word has length 64 [2022-01-11 00:56:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:43,537 INFO L470 AbstractCegarLoop]: Abstraction has 25018 states and 39569 transitions. [2022-01-11 00:56:43,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 00:56:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 39569 transitions. [2022-01-11 00:56:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:56:43,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:43,540 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] [2022-01-11 00:56:43,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:56:43,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash -806712528, now seen corresponding path program 1 times [2022-01-11 00:56:43,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:43,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491014261] [2022-01-11 00:56:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:43,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:43,632 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 00:56:43,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491014261] [2022-01-11 00:56:43,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491014261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:43,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:43,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:56:43,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119647429] [2022-01-11 00:56:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:43,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:56:43,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:56:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:56:43,634 INFO L87 Difference]: Start difference. First operand 25018 states and 39569 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 00:56:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:56:48,590 INFO L93 Difference]: Finished difference Result 72380 states and 114389 transitions. [2022-01-11 00:56:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:56:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-01-11 00:56:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:56:48,699 INFO L225 Difference]: With dead ends: 72380 [2022-01-11 00:56:48,700 INFO L226 Difference]: Without dead ends: 47526 [2022-01-11 00:56:48,740 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 00:56:48,741 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 436 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:56:48,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 477 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:56:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47526 states. [2022-01-11 00:56:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47526 to 47524. [2022-01-11 00:56:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47524 states, 47523 states have (on average 1.5673252951202576) internal successors, (74484), 47523 states have internal predecessors, (74484), 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 00:56:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47524 states to 47524 states and 74484 transitions. [2022-01-11 00:56:54,166 INFO L78 Accepts]: Start accepts. Automaton has 47524 states and 74484 transitions. Word has length 66 [2022-01-11 00:56:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:56:54,166 INFO L470 AbstractCegarLoop]: Abstraction has 47524 states and 74484 transitions. [2022-01-11 00:56:54,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 00:56:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 47524 states and 74484 transitions. [2022-01-11 00:56:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:56:54,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:56:54,177 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] [2022-01-11 00:56:54,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:56:54,177 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:56:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:56:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash 837361742, now seen corresponding path program 1 times [2022-01-11 00:56:54,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:56:54,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406306444] [2022-01-11 00:56:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:56:54,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:56:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:56:54,369 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 00:56:54,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:56:54,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406306444] [2022-01-11 00:56:54,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406306444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:56:54,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:56:54,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:56:54,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260702086] [2022-01-11 00:56:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:56:54,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:56:54,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:56:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:56:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:56:54,371 INFO L87 Difference]: Start difference. First operand 47524 states and 74484 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:57:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:57:04,318 INFO L93 Difference]: Finished difference Result 141444 states and 222022 transitions. [2022-01-11 00:57:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:57:04,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 00:57:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:57:04,493 INFO L225 Difference]: With dead ends: 141444 [2022-01-11 00:57:04,493 INFO L226 Difference]: Without dead ends: 94812 [2022-01-11 00:57:04,543 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 00:57:04,543 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 179 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:57:04,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 603 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:57:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94812 states. [2022-01-11 00:57:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94812 to 47556. [2022-01-11 00:57:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47556 states, 47555 states have (on average 1.5669435390600357) internal successors, (74516), 47555 states have internal predecessors, (74516), 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 00:57:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47556 states to 47556 states and 74516 transitions. [2022-01-11 00:57:10,502 INFO L78 Accepts]: Start accepts. Automaton has 47556 states and 74516 transitions. Word has length 67 [2022-01-11 00:57:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:57:10,502 INFO L470 AbstractCegarLoop]: Abstraction has 47556 states and 74516 transitions. [2022-01-11 00:57:10,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:57:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 47556 states and 74516 transitions. [2022-01-11 00:57:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:57:10,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:57:10,506 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] [2022-01-11 00:57:10,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:57:10,506 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:57:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:57:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash 878652507, now seen corresponding path program 1 times [2022-01-11 00:57:10,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:57:10,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138859225] [2022-01-11 00:57:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:57:10,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:57:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:57:10,578 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 00:57:10,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:57:10,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138859225] [2022-01-11 00:57:10,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138859225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:57:10,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:57:10,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:57:10,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404674337] [2022-01-11 00:57:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:57:10,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:57:10,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:57:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:57:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:57:10,580 INFO L87 Difference]: Start difference. First operand 47556 states and 74516 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 00:57:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:57:17,545 INFO L93 Difference]: Finished difference Result 88743 states and 139859 transitions. [2022-01-11 00:57:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:57:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-11 00:57:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:57:17,652 INFO L225 Difference]: With dead ends: 88743 [2022-01-11 00:57:17,652 INFO L226 Difference]: Without dead ends: 64148 [2022-01-11 00:57:17,685 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 00:57:17,686 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 120 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:57:17,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:57:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64148 states.