/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:16:49,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:16:49,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:16:49,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:16:49,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:16:49,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:16:49,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:16:49,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:16:49,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:16:49,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:16:49,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:16:49,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:16:49,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:16:49,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:16:49,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:16:49,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:16:49,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:16:49,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:16:49,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:16:49,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:16:49,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:16:49,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:16:49,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:16:49,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:16:49,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:16:49,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:16:49,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:16:49,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:16:49,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:16:49,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:16:49,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:16:49,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:16:49,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:16:49,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:16:49,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:16:49,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:16:49,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:16:49,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:16:49,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:16:49,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:16:49,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:16:49,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:16:49,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:16:49,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:16:49,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:16:49,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:16:49,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:16:49,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:16:49,386 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:16:49,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:16:49,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:16:49,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:16:49,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:16:49,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:16:49,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:16:49,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:16:49,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:16:49,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:16:49,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:16:49,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:16:49,390 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:16:49,390 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:16:49,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:16:49,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:16:49,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:16:49,583 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:16:49,584 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:16:49,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 13:16:49,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70dc21a47/4e6883e0dbda4fb1870593a38f36756a/FLAG8dd93135e [2022-01-10 13:16:50,004 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:16:50,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 13:16:50,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70dc21a47/4e6883e0dbda4fb1870593a38f36756a/FLAG8dd93135e [2022-01-10 13:16:50,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70dc21a47/4e6883e0dbda4fb1870593a38f36756a [2022-01-10 13:16:50,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:16:50,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:16:50,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:16:50,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:16:50,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:16:50,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1aaed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50, skipping insertion in model container [2022-01-10 13:16:50,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:16:50,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:16:50,222 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.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2022-01-10 13:16:50,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:16:50,265 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:16:50,299 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.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2022-01-10 13:16:50,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:16:50,334 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:16:50,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50 WrapperNode [2022-01-10 13:16:50,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:16:50,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:16:50,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:16:50,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:16:50,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,377 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 615 [2022-01-10 13:16:50,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:16:50,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:16:50,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:16:50,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:16:50,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:16:50,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:16:50,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:16:50,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:16:50,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (1/1) ... [2022-01-10 13:16:50,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:16:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:16:50,461 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) [2022-01-10 13:16:50,469 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 [2022-01-10 13:16:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:16:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:16:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:16:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:16:50,619 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:16:50,620 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:16:50,997 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:16:51,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:16:51,003 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:16:51,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:51 BoogieIcfgContainer [2022-01-10 13:16:51,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:16:51,005 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:16:51,005 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:16:51,006 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:16:51,007 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:51" (1/1) ... [2022-01-10 13:16:51,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:16:51 BasicIcfg [2022-01-10 13:16:51,288 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:16:51,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:16:51,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:16:51,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:16:51,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:50" (1/4) ... [2022-01-10 13:16:51,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243b0642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:51, skipping insertion in model container [2022-01-10 13:16:51,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50" (2/4) ... [2022-01-10 13:16:51,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243b0642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:51, skipping insertion in model container [2022-01-10 13:16:51,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:51" (3/4) ... [2022-01-10 13:16:51,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243b0642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:16:51, skipping insertion in model container [2022-01-10 13:16:51,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:16:51" (4/4) ... [2022-01-10 13:16:51,295 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 13:16:51,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:16:51,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:16:51,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:16:51,348 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 [2022-01-10 13:16:51,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:16:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2022-01-10 13:16:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 13:16:51,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:51,369 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] [2022-01-10 13:16:51,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1733086145, now seen corresponding path program 1 times [2022-01-10 13:16:51,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:51,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873831298] [2022-01-10 13:16:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:51,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:51,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:51,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873831298] [2022-01-10 13:16:51,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873831298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:51,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:51,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:51,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115109094] [2022-01-10 13:16:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:51,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:51,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:51,936 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 20.666666666666668) internal successors, (62), 3 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) [2022-01-10 13:16:53,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:16:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:54,254 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2022-01-10 13:16:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:54,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 [2022-01-10 13:16:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:54,265 INFO L225 Difference]: With dead ends: 323 [2022-01-10 13:16:54,265 INFO L226 Difference]: Without dead ends: 225 [2022-01-10 13:16:54,267 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 [2022-01-10 13:16:54,268 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:54,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 448 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 13:16:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-10 13:16:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2022-01-10 13:16:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.572072072072072) internal successors, (349), 222 states have internal predecessors, (349), 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) [2022-01-10 13:16:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2022-01-10 13:16:54,336 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2022-01-10 13:16:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:54,337 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2022-01-10 13:16:54,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2022-01-10 13:16:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2022-01-10 13:16:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 13:16:54,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:54,343 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] [2022-01-10 13:16:54,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:16:54,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash -994188472, now seen corresponding path program 1 times [2022-01-10 13:16:54,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:54,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867231621] [2022-01-10 13:16:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:54,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:54,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:54,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867231621] [2022-01-10 13:16:54,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867231621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:54,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:54,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:16:54,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019565196] [2022-01-10 13:16:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:54,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:16:54,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:16:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:16:54,509 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2022-01-10 13:16:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:54,621 INFO L93 Difference]: Finished difference Result 626 states and 974 transitions. [2022-01-10 13:16:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:16:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2022-01-10 13:16:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:54,625 INFO L225 Difference]: With dead ends: 626 [2022-01-10 13:16:54,625 INFO L226 Difference]: Without dead ends: 428 [2022-01-10 13:16:54,628 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 [2022-01-10 13:16:54,629 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 581 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 424 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 [2022-01-10 13:16:54,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-10 13:16:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2022-01-10 13:16:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5576470588235294) internal successors, (662), 425 states have internal predecessors, (662), 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) [2022-01-10 13:16:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 662 transitions. [2022-01-10 13:16:54,669 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 662 transitions. Word has length 64 [2022-01-10 13:16:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:54,669 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 662 transitions. [2022-01-10 13:16:54,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2022-01-10 13:16:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 662 transitions. [2022-01-10 13:16:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:16:54,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:54,675 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] [2022-01-10 13:16:54,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:16:54,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2113512833, now seen corresponding path program 1 times [2022-01-10 13:16:54,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:54,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907512824] [2022-01-10 13:16:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:54,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:54,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:54,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907512824] [2022-01-10 13:16:54,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907512824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:54,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:54,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:54,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694018567] [2022-01-10 13:16:54,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:54,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:54,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:54,821 INFO L87 Difference]: Start difference. First operand 426 states and 662 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 13:16:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:54,880 INFO L93 Difference]: Finished difference Result 896 states and 1442 transitions. [2022-01-10 13:16:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:54,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 13:16:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:54,884 INFO L225 Difference]: With dead ends: 896 [2022-01-10 13:16:54,884 INFO L226 Difference]: Without dead ends: 578 [2022-01-10 13:16:54,886 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 [2022-01-10 13:16:54,888 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 137 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 522 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 [2022-01-10 13:16:54,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 522 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:54,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-10 13:16:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 566. [2022-01-10 13:16:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.5823008849557523) internal successors, (894), 565 states have internal predecessors, (894), 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) [2022-01-10 13:16:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 894 transitions. [2022-01-10 13:16:54,933 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 894 transitions. Word has length 65 [2022-01-10 13:16:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:54,934 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 894 transitions. [2022-01-10 13:16:54,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 13:16:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 894 transitions. [2022-01-10 13:16:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:16:54,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:54,935 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] [2022-01-10 13:16:54,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:16:54,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1392201104, now seen corresponding path program 1 times [2022-01-10 13:16:54,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:54,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130811022] [2022-01-10 13:16:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:54,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:55,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:55,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130811022] [2022-01-10 13:16:55,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130811022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:55,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:55,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:55,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177897244] [2022-01-10 13:16:55,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:55,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:55,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:55,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:55,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:55,060 INFO L87 Difference]: Start difference. First operand 566 states and 894 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 13:16:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:55,131 INFO L93 Difference]: Finished difference Result 1011 states and 1640 transitions. [2022-01-10 13:16:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 13:16:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:55,134 INFO L225 Difference]: With dead ends: 1011 [2022-01-10 13:16:55,134 INFO L226 Difference]: Without dead ends: 701 [2022-01-10 13:16:55,135 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 [2022-01-10 13:16:55,140 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 513 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 [2022-01-10 13:16:55,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 513 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-10 13:16:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 699. [2022-01-10 13:16:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.5974212034383954) internal successors, (1115), 698 states have internal predecessors, (1115), 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) [2022-01-10 13:16:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1115 transitions. [2022-01-10 13:16:55,180 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1115 transitions. Word has length 65 [2022-01-10 13:16:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:55,182 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1115 transitions. [2022-01-10 13:16:55,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 13:16:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1115 transitions. [2022-01-10 13:16:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:16:55,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:55,183 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] [2022-01-10 13:16:55,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:16:55,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1142110404, now seen corresponding path program 1 times [2022-01-10 13:16:55,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:55,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755513146] [2022-01-10 13:16:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:55,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:55,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755513146] [2022-01-10 13:16:55,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755513146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:55,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:55,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:55,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044299477] [2022-01-10 13:16:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:55,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:55,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:55,231 INFO L87 Difference]: Start difference. First operand 699 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 13:16:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:55,299 INFO L93 Difference]: Finished difference Result 2059 states and 3281 transitions. [2022-01-10 13:16:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:55,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 13:16:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:55,305 INFO L225 Difference]: With dead ends: 2059 [2022-01-10 13:16:55,305 INFO L226 Difference]: Without dead ends: 1388 [2022-01-10 13:16:55,306 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 [2022-01-10 13:16:55,307 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 213 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 649 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 [2022-01-10 13:16:55,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 649 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-01-10 13:16:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 701. [2022-01-10 13:16:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.5957142857142856) internal successors, (1117), 700 states have internal predecessors, (1117), 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) [2022-01-10 13:16:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1117 transitions. [2022-01-10 13:16:55,353 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1117 transitions. Word has length 65 [2022-01-10 13:16:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:55,356 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1117 transitions. [2022-01-10 13:16:55,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 13:16:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1117 transitions. [2022-01-10 13:16:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 13:16:55,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:55,357 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] [2022-01-10 13:16:55,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:16:55,358 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2063279837, now seen corresponding path program 1 times [2022-01-10 13:16:55,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907269000] [2022-01-10 13:16:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:55,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:55,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:55,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907269000] [2022-01-10 13:16:55,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907269000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:55,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:55,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:16:55,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547968549] [2022-01-10 13:16:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:55,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:16:55,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:16:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:16:55,490 INFO L87 Difference]: Start difference. First operand 701 states and 1117 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-10 13:16:55,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:55,690 INFO L93 Difference]: Finished difference Result 2651 states and 4216 transitions. [2022-01-10 13:16:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:16:55,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 [2022-01-10 13:16:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:55,698 INFO L225 Difference]: With dead ends: 2651 [2022-01-10 13:16:55,699 INFO L226 Difference]: Without dead ends: 1962 [2022-01-10 13:16:55,700 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 [2022-01-10 13:16:55,701 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 660 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 942 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 [2022-01-10 13:16:55,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 942 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-01-10 13:16:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1289. [2022-01-10 13:16:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 1.5776397515527951) internal successors, (2032), 1288 states have internal predecessors, (2032), 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) [2022-01-10 13:16:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 2032 transitions. [2022-01-10 13:16:55,807 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 2032 transitions. Word has length 66 [2022-01-10 13:16:55,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:55,807 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 2032 transitions. [2022-01-10 13:16:55,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-10 13:16:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 2032 transitions. [2022-01-10 13:16:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 13:16:55,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:55,808 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] [2022-01-10 13:16:55,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:16:55,809 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1589021305, now seen corresponding path program 1 times [2022-01-10 13:16:55,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:55,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188968134] [2022-01-10 13:16:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:55,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:55,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:55,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188968134] [2022-01-10 13:16:55,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188968134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:55,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:55,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:16:55,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112483115] [2022-01-10 13:16:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:55,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:16:55,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:55,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:16:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:16:55,883 INFO L87 Difference]: Start difference. First operand 1289 states and 2032 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) [2022-01-10 13:16:55,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:55,966 INFO L93 Difference]: Finished difference Result 2306 states and 3633 transitions. [2022-01-10 13:16:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:16:55,966 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 [2022-01-10 13:16:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:55,970 INFO L225 Difference]: With dead ends: 2306 [2022-01-10 13:16:55,970 INFO L226 Difference]: Without dead ends: 1033 [2022-01-10 13:16:55,971 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 [2022-01-10 13:16:55,972 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 69 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:55,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 707 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-01-10 13:16:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1033. [2022-01-10 13:16:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.574612403100775) internal successors, (1625), 1032 states have internal predecessors, (1625), 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) [2022-01-10 13:16:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1625 transitions. [2022-01-10 13:16:56,035 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1625 transitions. Word has length 66 [2022-01-10 13:16:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:56,035 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1625 transitions. [2022-01-10 13:16:56,035 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) [2022-01-10 13:16:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1625 transitions. [2022-01-10 13:16:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 13:16:56,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:56,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:56,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:16:56,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1650526316, now seen corresponding path program 1 times [2022-01-10 13:16:56,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:56,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313287245] [2022-01-10 13:16:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:56,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:56,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:56,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313287245] [2022-01-10 13:16:56,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313287245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:56,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:56,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:56,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021480977] [2022-01-10 13:16:56,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:56,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:56,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:56,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:56,087 INFO L87 Difference]: Start difference. First operand 1033 states and 1625 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-01-10 13:16:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:56,165 INFO L93 Difference]: Finished difference Result 2048 states and 3213 transitions. [2022-01-10 13:16:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 13:16:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:56,170 INFO L225 Difference]: With dead ends: 2048 [2022-01-10 13:16:56,170 INFO L226 Difference]: Without dead ends: 1369 [2022-01-10 13:16:56,171 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 [2022-01-10 13:16:56,171 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 210 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:56,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 450 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-01-10 13:16:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1033. [2022-01-10 13:16:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.573643410852713) internal successors, (1624), 1032 states have internal predecessors, (1624), 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) [2022-01-10 13:16:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1624 transitions. [2022-01-10 13:16:56,238 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1624 transitions. Word has length 69 [2022-01-10 13:16:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:56,238 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1624 transitions. [2022-01-10 13:16:56,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-01-10 13:16:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1624 transitions. [2022-01-10 13:16:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 13:16:56,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:56,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:56,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:16:56,240 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1373489108, now seen corresponding path program 1 times [2022-01-10 13:16:56,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:56,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354005169] [2022-01-10 13:16:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:56,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:56,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:56,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354005169] [2022-01-10 13:16:56,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354005169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:56,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:56,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:56,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256286152] [2022-01-10 13:16:56,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:56,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:56,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:56,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:56,412 INFO L87 Difference]: Start difference. First operand 1033 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-01-10 13:16:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:56,566 INFO L93 Difference]: Finished difference Result 2685 states and 4328 transitions. [2022-01-10 13:16:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-01-10 13:16:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:56,572 INFO L225 Difference]: With dead ends: 2685 [2022-01-10 13:16:56,572 INFO L226 Difference]: Without dead ends: 1813 [2022-01-10 13:16:56,573 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 [2022-01-10 13:16:56,573 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 121 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:56,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-01-10 13:16:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1811. [2022-01-10 13:16:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 1.5950276243093922) internal successors, (2887), 1810 states have internal predecessors, (2887), 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) [2022-01-10 13:16:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2887 transitions. [2022-01-10 13:16:56,727 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2887 transitions. Word has length 70 [2022-01-10 13:16:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:56,727 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2887 transitions. [2022-01-10 13:16:56,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-01-10 13:16:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2887 transitions. [2022-01-10 13:16:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 13:16:56,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:56,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:56,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:16:56,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1659559100, now seen corresponding path program 1 times [2022-01-10 13:16:56,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:56,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478450031] [2022-01-10 13:16:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:56,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:56,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:56,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478450031] [2022-01-10 13:16:56,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478450031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:56,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:56,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:56,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083691394] [2022-01-10 13:16:56,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:56,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:56,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:56,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:56,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:56,789 INFO L87 Difference]: Start difference. First operand 1811 states and 2887 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-01-10 13:16:57,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:57,062 INFO L93 Difference]: Finished difference Result 5059 states and 8137 transitions. [2022-01-10 13:16:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:16:57,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-10 13:16:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:57,071 INFO L225 Difference]: With dead ends: 5059 [2022-01-10 13:16:57,072 INFO L226 Difference]: Without dead ends: 3409 [2022-01-10 13:16:57,074 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 [2022-01-10 13:16:57,075 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 151 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 597 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 [2022-01-10 13:16:57,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 597 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2022-01-10 13:16:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3407. [2022-01-10 13:16:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 1.5845566647093365) internal successors, (5397), 3406 states have internal predecessors, (5397), 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) [2022-01-10 13:16:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 5397 transitions. [2022-01-10 13:16:57,328 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 5397 transitions. Word has length 72 [2022-01-10 13:16:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:57,328 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 5397 transitions. [2022-01-10 13:16:57,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-01-10 13:16:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 5397 transitions. [2022-01-10 13:16:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 13:16:57,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:57,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:57,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:16:57,330 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash -853908261, now seen corresponding path program 1 times [2022-01-10 13:16:57,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:57,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739872426] [2022-01-10 13:16:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:57,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:57,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:57,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739872426] [2022-01-10 13:16:57,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739872426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:57,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:57,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:16:57,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39896451] [2022-01-10 13:16:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:57,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:16:57,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:16:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:16:57,399 INFO L87 Difference]: Start difference. First operand 3407 states and 5397 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 13:16:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:57,838 INFO L93 Difference]: Finished difference Result 9063 states and 14371 transitions. [2022-01-10 13:16:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:16:57,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 13:16:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:57,855 INFO L225 Difference]: With dead ends: 9063 [2022-01-10 13:16:57,855 INFO L226 Difference]: Without dead ends: 5736 [2022-01-10 13:16:57,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:16:57,860 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 406 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:16:57,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 544 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2022-01-10 13:16:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 3412. [2022-01-10 13:16:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.5828202873057755) internal successors, (5399), 3411 states have internal predecessors, (5399), 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) [2022-01-10 13:16:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5399 transitions. [2022-01-10 13:16:58,167 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5399 transitions. Word has length 72 [2022-01-10 13:16:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:58,167 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 5399 transitions. [2022-01-10 13:16:58,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 13:16:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5399 transitions. [2022-01-10 13:16:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 13:16:58,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:58,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:58,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:16:58,169 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1840965122, now seen corresponding path program 1 times [2022-01-10 13:16:58,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:58,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755949444] [2022-01-10 13:16:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:58,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:58,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:58,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755949444] [2022-01-10 13:16:58,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755949444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:58,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:58,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:16:58,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234354332] [2022-01-10 13:16:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:58,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:16:58,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:16:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:16:58,251 INFO L87 Difference]: Start difference. First operand 3412 states and 5399 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 13:16:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:16:58,857 INFO L93 Difference]: Finished difference Result 9838 states and 15586 transitions. [2022-01-10 13:16:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:16:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 13:16:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:16:58,883 INFO L225 Difference]: With dead ends: 9838 [2022-01-10 13:16:58,883 INFO L226 Difference]: Without dead ends: 6494 [2022-01-10 13:16:58,888 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 [2022-01-10 13:16:58,888 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 531 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 425 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 [2022-01-10 13:16:58,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 425 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:16:58,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2022-01-10 13:16:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 6492. [2022-01-10 13:16:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6491 states have (on average 1.5754121090741027) internal successors, (10226), 6491 states have internal predecessors, (10226), 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) [2022-01-10 13:16:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 10226 transitions. [2022-01-10 13:16:59,514 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 10226 transitions. Word has length 72 [2022-01-10 13:16:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:16:59,514 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 10226 transitions. [2022-01-10 13:16:59,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 13:16:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 10226 transitions. [2022-01-10 13:16:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 13:16:59,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:16:59,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:16:59,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:16:59,517 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:16:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:16:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1922282855, now seen corresponding path program 1 times [2022-01-10 13:16:59,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:16:59,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220822197] [2022-01-10 13:16:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:16:59,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:16:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:16:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:16:59,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:16:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220822197] [2022-01-10 13:16:59,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220822197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:16:59,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:16:59,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:16:59,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408843015] [2022-01-10 13:16:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:16:59,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:16:59,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:16:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:16:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:16:59,579 INFO L87 Difference]: Start difference. First operand 6492 states and 10226 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 13:17:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:00,266 INFO L93 Difference]: Finished difference Result 12238 states and 19484 transitions. [2022-01-10 13:17:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 13:17:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:00,284 INFO L225 Difference]: With dead ends: 12238 [2022-01-10 13:17:00,284 INFO L226 Difference]: Without dead ends: 9026 [2022-01-10 13:17:00,289 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 [2022-01-10 13:17:00,290 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 122 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 494 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 [2022-01-10 13:17:00,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2022-01-10 13:17:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 9024. [2022-01-10 13:17:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9024 states, 9023 states have (on average 1.577967416602017) internal successors, (14238), 9023 states have internal predecessors, (14238), 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) [2022-01-10 13:17:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 14238 transitions. [2022-01-10 13:17:01,187 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 14238 transitions. Word has length 73 [2022-01-10 13:17:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:01,187 INFO L470 AbstractCegarLoop]: Abstraction has 9024 states and 14238 transitions. [2022-01-10 13:17:01,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 13:17:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 14238 transitions. [2022-01-10 13:17:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 13:17:01,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:01,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:01,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:17:01,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash -224337655, now seen corresponding path program 1 times [2022-01-10 13:17:01,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671011450] [2022-01-10 13:17:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:01,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:01,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:01,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671011450] [2022-01-10 13:17:01,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671011450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:01,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:01,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:01,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681615112] [2022-01-10 13:17:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:01,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:01,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:01,263 INFO L87 Difference]: Start difference. First operand 9024 states and 14238 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 13:17:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:02,088 INFO L93 Difference]: Finished difference Result 17748 states and 28216 transitions. [2022-01-10 13:17:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 13:17:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:02,112 INFO L225 Difference]: With dead ends: 17748 [2022-01-10 13:17:02,112 INFO L226 Difference]: Without dead ends: 11257 [2022-01-10 13:17:02,119 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 [2022-01-10 13:17:02,120 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 127 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 419 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 [2022-01-10 13:17:02,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2022-01-10 13:17:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 11031. [2022-01-10 13:17:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11031 states, 11030 states have (on average 1.5756119673617408) internal successors, (17379), 11030 states have internal predecessors, (17379), 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) [2022-01-10 13:17:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 17379 transitions. [2022-01-10 13:17:02,961 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 17379 transitions. Word has length 73 [2022-01-10 13:17:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:02,961 INFO L470 AbstractCegarLoop]: Abstraction has 11031 states and 17379 transitions. [2022-01-10 13:17:02,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 13:17:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 17379 transitions. [2022-01-10 13:17:02,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 13:17:02,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:02,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:02,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:17:02,964 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash -183612262, now seen corresponding path program 1 times [2022-01-10 13:17:02,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:02,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770173562] [2022-01-10 13:17:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:02,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:03,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:03,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770173562] [2022-01-10 13:17:03,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770173562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:03,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:03,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:03,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742096586] [2022-01-10 13:17:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:03,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:03,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:03,023 INFO L87 Difference]: Start difference. First operand 11031 states and 17379 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 13:17:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:04,012 INFO L93 Difference]: Finished difference Result 16588 states and 26159 transitions. [2022-01-10 13:17:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 13:17:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:04,034 INFO L225 Difference]: With dead ends: 16588 [2022-01-10 13:17:04,034 INFO L226 Difference]: Without dead ends: 9379 [2022-01-10 13:17:04,047 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 [2022-01-10 13:17:04,047 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 47 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:04,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 688 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2022-01-10 13:17:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 9379. [2022-01-10 13:17:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9379 states, 9378 states have (on average 1.572510130091704) internal successors, (14747), 9378 states have internal predecessors, (14747), 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) [2022-01-10 13:17:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9379 states to 9379 states and 14747 transitions. [2022-01-10 13:17:04,836 INFO L78 Accepts]: Start accepts. Automaton has 9379 states and 14747 transitions. Word has length 74 [2022-01-10 13:17:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:04,836 INFO L470 AbstractCegarLoop]: Abstraction has 9379 states and 14747 transitions. [2022-01-10 13:17:04,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 13:17:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9379 states and 14747 transitions. [2022-01-10 13:17:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 13:17:04,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:04,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:17:04,838 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash -781213159, now seen corresponding path program 1 times [2022-01-10 13:17:04,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178015168] [2022-01-10 13:17:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:04,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:04,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:04,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178015168] [2022-01-10 13:17:04,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178015168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:04,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:04,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:17:04,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226940812] [2022-01-10 13:17:04,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:04,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:17:04,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:17:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:04,940 INFO L87 Difference]: Start difference. First operand 9379 states and 14747 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-01-10 13:17:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:06,137 INFO L93 Difference]: Finished difference Result 24820 states and 38949 transitions. [2022-01-10 13:17:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:17:06,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-01-10 13:17:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:06,162 INFO L225 Difference]: With dead ends: 24820 [2022-01-10 13:17:06,162 INFO L226 Difference]: Without dead ends: 15485 [2022-01-10 13:17:06,179 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 [2022-01-10 13:17:06,179 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 784 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:06,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 730 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2022-01-10 13:17:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 9535. [2022-01-10 13:17:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9535 states, 9534 states have (on average 1.565345080763583) internal successors, (14924), 9534 states have internal predecessors, (14924), 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) [2022-01-10 13:17:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 14924 transitions. [2022-01-10 13:17:07,009 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 14924 transitions. Word has length 74 [2022-01-10 13:17:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:07,009 INFO L470 AbstractCegarLoop]: Abstraction has 9535 states and 14924 transitions. [2022-01-10 13:17:07,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-01-10 13:17:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 14924 transitions. [2022-01-10 13:17:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 13:17:07,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:07,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:07,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:17:07,011 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash -285297283, now seen corresponding path program 1 times [2022-01-10 13:17:07,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:07,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964646491] [2022-01-10 13:17:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:07,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:07,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:07,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964646491] [2022-01-10 13:17:07,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964646491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:07,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:07,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:07,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629472306] [2022-01-10 13:17:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:07,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:07,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:07,064 INFO L87 Difference]: Start difference. First operand 9535 states and 14924 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 13:17:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:07,697 INFO L93 Difference]: Finished difference Result 17581 states and 27497 transitions. [2022-01-10 13:17:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:07,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 13:17:07,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:07,710 INFO L225 Difference]: With dead ends: 17581 [2022-01-10 13:17:07,710 INFO L226 Difference]: Without dead ends: 8082 [2022-01-10 13:17:07,721 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 [2022-01-10 13:17:07,721 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 47 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:07,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 683 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:07,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-01-10 13:17:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 8082. [2022-01-10 13:17:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.5619354040341542) internal successors, (12622), 8081 states have internal predecessors, (12622), 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) [2022-01-10 13:17:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12622 transitions. [2022-01-10 13:17:08,486 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12622 transitions. Word has length 74 [2022-01-10 13:17:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:08,486 INFO L470 AbstractCegarLoop]: Abstraction has 8082 states and 12622 transitions. [2022-01-10 13:17:08,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-01-10 13:17:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12622 transitions. [2022-01-10 13:17:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:17:08,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:08,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:08,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:17:08,488 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash -947000846, now seen corresponding path program 1 times [2022-01-10 13:17:08,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:08,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672120581] [2022-01-10 13:17:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:08,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:08,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:08,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672120581] [2022-01-10 13:17:08,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672120581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:08,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:08,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:08,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374594292] [2022-01-10 13:17:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:08,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:08,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:08,523 INFO L87 Difference]: Start difference. First operand 8082 states and 12622 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-01-10 13:17:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:09,421 INFO L93 Difference]: Finished difference Result 16154 states and 25222 transitions. [2022-01-10 13:17:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-01-10 13:17:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:09,435 INFO L225 Difference]: With dead ends: 16154 [2022-01-10 13:17:09,435 INFO L226 Difference]: Without dead ends: 11176 [2022-01-10 13:17:09,441 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 [2022-01-10 13:17:09,442 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 196 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:09,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 536 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states. [2022-01-10 13:17:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 8082. [2022-01-10 13:17:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.5615641628511323) internal successors, (12619), 8081 states have internal predecessors, (12619), 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) [2022-01-10 13:17:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12619 transitions. [2022-01-10 13:17:10,098 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12619 transitions. Word has length 77 [2022-01-10 13:17:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:10,098 INFO L470 AbstractCegarLoop]: Abstraction has 8082 states and 12619 transitions. [2022-01-10 13:17:10,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-01-10 13:17:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12619 transitions. [2022-01-10 13:17:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 13:17:10,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:10,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:10,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:17:10,101 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash 671320266, now seen corresponding path program 1 times [2022-01-10 13:17:10,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:10,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756717364] [2022-01-10 13:17:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:10,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:10,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:10,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756717364] [2022-01-10 13:17:10,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756717364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:10,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:10,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:10,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568179823] [2022-01-10 13:17:10,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:10,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:10,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:10,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:10,244 INFO L87 Difference]: Start difference. First operand 8082 states and 12619 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-01-10 13:17:12,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:17:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:13,759 INFO L93 Difference]: Finished difference Result 22326 states and 35277 transitions. [2022-01-10 13:17:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 13:17:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:13,782 INFO L225 Difference]: With dead ends: 22326 [2022-01-10 13:17:13,782 INFO L226 Difference]: Without dead ends: 14724 [2022-01-10 13:17:13,793 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 [2022-01-10 13:17:13,794 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 111 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:13,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 13:17:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14724 states. [2022-01-10 13:17:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14724 to 14722. [2022-01-10 13:17:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 14721 states have (on average 1.5680320630391957) internal successors, (23083), 14721 states have internal predecessors, (23083), 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) [2022-01-10 13:17:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 23083 transitions. [2022-01-10 13:17:15,293 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 23083 transitions. Word has length 78 [2022-01-10 13:17:15,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:15,293 INFO L470 AbstractCegarLoop]: Abstraction has 14722 states and 23083 transitions. [2022-01-10 13:17:15,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-01-10 13:17:15,293 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 23083 transitions. [2022-01-10 13:17:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:17:15,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:15,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:15,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:17:15,295 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -433940494, now seen corresponding path program 1 times [2022-01-10 13:17:15,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:15,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395044773] [2022-01-10 13:17:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:15,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:15,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:15,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395044773] [2022-01-10 13:17:15,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395044773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:15,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:15,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:15,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197285606] [2022-01-10 13:17:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:15,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:15,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:15,365 INFO L87 Difference]: Start difference. First operand 14722 states and 23083 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-01-10 13:17:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:17,698 INFO L93 Difference]: Finished difference Result 37294 states and 58638 transitions. [2022-01-10 13:17:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:17,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 13:17:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:17,730 INFO L225 Difference]: With dead ends: 37294 [2022-01-10 13:17:17,730 INFO L226 Difference]: Without dead ends: 23052 [2022-01-10 13:17:17,756 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 [2022-01-10 13:17:17,766 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:17,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 565 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23052 states. [2022-01-10 13:17:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23052 to 23050. [2022-01-10 13:17:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23050 states, 23049 states have (on average 1.5526920907631567) internal successors, (35788), 23049 states have internal predecessors, (35788), 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) [2022-01-10 13:17:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23050 states to 23050 states and 35788 transitions. [2022-01-10 13:17:20,034 INFO L78 Accepts]: Start accepts. Automaton has 23050 states and 35788 transitions. Word has length 80 [2022-01-10 13:17:20,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:20,034 INFO L470 AbstractCegarLoop]: Abstraction has 23050 states and 35788 transitions. [2022-01-10 13:17:20,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-01-10 13:17:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 23050 states and 35788 transitions. [2022-01-10 13:17:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:17:20,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:20,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:20,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:17:20,036 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -881664654, now seen corresponding path program 1 times [2022-01-10 13:17:20,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:20,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129397456] [2022-01-10 13:17:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:20,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:20,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129397456] [2022-01-10 13:17:20,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129397456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:20,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:20,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:20,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5293434] [2022-01-10 13:17:20,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:20,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:20,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:20,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:20,100 INFO L87 Difference]: Start difference. First operand 23050 states and 35788 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-01-10 13:17:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:23,789 INFO L93 Difference]: Finished difference Result 58342 states and 90734 transitions. [2022-01-10 13:17:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:23,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 13:17:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:23,853 INFO L225 Difference]: With dead ends: 58342 [2022-01-10 13:17:23,853 INFO L226 Difference]: Without dead ends: 35924 [2022-01-10 13:17:23,879 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 [2022-01-10 13:17:23,880 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 137 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:23,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35924 states. [2022-01-10 13:17:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35924 to 35922. [2022-01-10 13:17:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35922 states, 35921 states have (on average 1.535257927117842) internal successors, (55148), 35921 states have internal predecessors, (55148), 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) [2022-01-10 13:17:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35922 states to 35922 states and 55148 transitions. [2022-01-10 13:17:27,724 INFO L78 Accepts]: Start accepts. Automaton has 35922 states and 55148 transitions. Word has length 80 [2022-01-10 13:17:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:27,725 INFO L470 AbstractCegarLoop]: Abstraction has 35922 states and 55148 transitions. [2022-01-10 13:17:27,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-01-10 13:17:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 35922 states and 55148 transitions. [2022-01-10 13:17:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 13:17:27,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:27,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:27,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:17:27,727 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash 294258291, now seen corresponding path program 1 times [2022-01-10 13:17:27,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:27,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127936188] [2022-01-10 13:17:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:27,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:27,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:27,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127936188] [2022-01-10 13:17:27,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127936188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:27,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:27,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:27,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728611981] [2022-01-10 13:17:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:27,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:27,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:27,796 INFO L87 Difference]: Start difference. First operand 35922 states and 55148 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-01-10 13:17:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:33,032 INFO L93 Difference]: Finished difference Result 80566 states and 124110 transitions. [2022-01-10 13:17:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:33,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-01-10 13:17:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:33,110 INFO L225 Difference]: With dead ends: 80566 [2022-01-10 13:17:33,110 INFO L226 Difference]: Without dead ends: 49972 [2022-01-10 13:17:33,138 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 [2022-01-10 13:17:33,138 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 117 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 434 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 [2022-01-10 13:17:33,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49972 states. [2022-01-10 13:17:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49972 to 48482. [2022-01-10 13:17:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48482 states, 48481 states have (on average 1.5246385181823807) internal successors, (73916), 48481 states have internal predecessors, (73916), 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) [2022-01-10 13:17:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48482 states to 48482 states and 73916 transitions. [2022-01-10 13:17:38,573 INFO L78 Accepts]: Start accepts. Automaton has 48482 states and 73916 transitions. Word has length 81 [2022-01-10 13:17:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:38,573 INFO L470 AbstractCegarLoop]: Abstraction has 48482 states and 73916 transitions. [2022-01-10 13:17:38,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-01-10 13:17:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 48482 states and 73916 transitions. [2022-01-10 13:17:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:17:38,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:38,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:38,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:17:38,576 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:38,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash 834293096, now seen corresponding path program 1 times [2022-01-10 13:17:38,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:38,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078040468] [2022-01-10 13:17:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:38,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:38,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:38,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078040468] [2022-01-10 13:17:38,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078040468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:38,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:38,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:38,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428301666] [2022-01-10 13:17:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:38,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:38,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:38,669 INFO L87 Difference]: Start difference. First operand 48482 states and 73916 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2022-01-10 13:17:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:44,739 INFO L93 Difference]: Finished difference Result 98635 states and 150292 transitions. [2022-01-10 13:17:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:44,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 13:17:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:44,833 INFO L225 Difference]: With dead ends: 98635 [2022-01-10 13:17:44,833 INFO L226 Difference]: Without dead ends: 50312 [2022-01-10 13:17:44,872 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 [2022-01-10 13:17:44,873 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 492 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:44,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 411 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50312 states. [2022-01-10 13:17:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50312 to 48552. [2022-01-10 13:17:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48552 states, 48551 states have (on average 1.5238203126609133) internal successors, (73983), 48551 states have internal predecessors, (73983), 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) [2022-01-10 13:17:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48552 states to 48552 states and 73983 transitions. [2022-01-10 13:17:50,450 INFO L78 Accepts]: Start accepts. Automaton has 48552 states and 73983 transitions. Word has length 82 [2022-01-10 13:17:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:50,451 INFO L470 AbstractCegarLoop]: Abstraction has 48552 states and 73983 transitions. [2022-01-10 13:17:50,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2022-01-10 13:17:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 48552 states and 73983 transitions. [2022-01-10 13:17:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:17:50,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:50,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:50,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:17:50,453 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 36381986, now seen corresponding path program 1 times [2022-01-10 13:17:50,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:50,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580321677] [2022-01-10 13:17:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:50,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:50,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580321677] [2022-01-10 13:17:50,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580321677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:50,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:50,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:50,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788363767] [2022-01-10 13:17:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:50,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:50,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:50,528 INFO L87 Difference]: Start difference. First operand 48552 states and 73983 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2022-01-10 13:17:52,912 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 []