/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:25:48,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:25:48,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:25:48,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:25:48,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:25:48,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:25:48,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:25:48,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:25:48,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:25:48,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:25:48,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:25:48,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:25:48,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:25:48,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:25:48,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:25:48,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:25:48,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:25:48,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:25:48,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:25:48,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:25:48,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:25:48,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:25:48,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:25:48,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:25:48,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:25:48,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:25:48,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:25:48,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:25:48,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:25:48,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:25:48,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:25:48,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:25:48,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:25:48,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:25:48,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:25:48,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:25:48,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:25:48,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:25:48,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:25:48,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:25:48,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:25:48,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:25:48,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:25:48,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:25:48,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:25:48,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:25:48,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:25:48,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:25:48,674 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:25:48,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:25:48,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:25:48,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:25:48,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:25:48,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:25:48,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:25:48,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:25:48,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:25:48,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:25:48,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:25:48,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:25:48,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:25:48,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:25:48,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:25:48,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:25:48,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:25:48,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:25:48,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:25:48,678 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:25:48,678 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:25:48,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:25:48,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:25:48,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:25:48,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:25:48,865 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:25:48,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-11 06:25:48,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa119a85/4cb4968d814042288cd100ad9153fe3a/FLAG26b6611e7 [2022-01-11 06:25:49,298 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:25:49,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-11 06:25:49,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa119a85/4cb4968d814042288cd100ad9153fe3a/FLAG26b6611e7 [2022-01-11 06:25:49,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa119a85/4cb4968d814042288cd100ad9153fe3a [2022-01-11 06:25:49,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:25:49,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:25:49,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:25:49,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:25:49,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:25:49,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:25:49" (1/1) ... [2022-01-11 06:25:49,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71147f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:49, skipping insertion in model container [2022-01-11 06:25:49,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:25:49" (1/1) ... [2022-01-11 06:25:49,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:25:49,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:25:49,971 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2022-01-11 06:25:50,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:25:50,040 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:25:50,099 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2022-01-11 06:25:50,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:25:50,172 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:25:50,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50 WrapperNode [2022-01-11 06:25:50,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:25:50,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:25:50,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:25:50,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:25:50,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,235 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1268 [2022-01-11 06:25:50,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:25:50,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:25:50,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:25:50,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:25:50,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:25:50,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:25:50,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:25:50,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:25:50,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (1/1) ... [2022-01-11 06:25:50,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:25:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:25:50,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:25:50,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:25:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:25:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:25:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:25:50,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:25:50,459 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:25:50,460 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:25:51,088 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:25:51,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:25:51,096 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:25:51,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:25:51 BoogieIcfgContainer [2022-01-11 06:25:51,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:25:51,098 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:25:51,098 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:25:51,099 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:25:51,101 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:25:51" (1/1) ... [2022-01-11 06:25:51,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:25:51 BasicIcfg [2022-01-11 06:25:51,544 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:25:51,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:25:51,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:25:51,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:25:51,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:25:49" (1/4) ... [2022-01-11 06:25:51,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e55ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:25:51, skipping insertion in model container [2022-01-11 06:25:51,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:25:50" (2/4) ... [2022-01-11 06:25:51,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e55ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:25:51, skipping insertion in model container [2022-01-11 06:25:51,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:25:51" (3/4) ... [2022-01-11 06:25:51,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e55ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:25:51, skipping insertion in model container [2022-01-11 06:25:51,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:25:51" (4/4) ... [2022-01-11 06:25:51,552 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:25:51,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:25:51,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:25:51,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:25:51,616 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:25:51,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:25:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 317 states have (on average 1.804416403785489) internal successors, (572), 318 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 06:25:51,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:51,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:51,657 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:51,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash 531733925, now seen corresponding path program 1 times [2022-01-11 06:25:51,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:51,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998440561] [2022-01-11 06:25:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:51,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:52,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:52,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998440561] [2022-01-11 06:25:52,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998440561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:52,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:52,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:52,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329631718] [2022-01-11 06:25:52,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:52,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:52,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:52,310 INFO L87 Difference]: Start difference. First operand has 319 states, 317 states have (on average 1.804416403785489) internal successors, (572), 318 states have internal predecessors, (572), 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 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:54,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:25:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:54,664 INFO L93 Difference]: Finished difference Result 568 states and 991 transitions. [2022-01-11 06:25:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:54,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2022-01-11 06:25:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:54,684 INFO L225 Difference]: With dead ends: 568 [2022-01-11 06:25:54,684 INFO L226 Difference]: Without dead ends: 432 [2022-01-11 06:25:54,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:54,691 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 222 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:54,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1218 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-11 06:25:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-11 06:25:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-01-11 06:25:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6643356643356644) internal successors, (714), 429 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-01-11 06:25:54,769 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 111 [2022-01-11 06:25:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:54,770 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-01-11 06:25:54,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-01-11 06:25:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 06:25:54,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:54,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:54,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:25:54,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1565338574, now seen corresponding path program 1 times [2022-01-11 06:25:54,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:54,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114387382] [2022-01-11 06:25:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:54,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:54,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:54,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114387382] [2022-01-11 06:25:54,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114387382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:54,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:54,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:54,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840521628] [2022-01-11 06:25:54,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:54,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:54,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:54,981 INFO L87 Difference]: Start difference. First operand 430 states and 714 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:25:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:57,135 INFO L93 Difference]: Finished difference Result 660 states and 1105 transitions. [2022-01-11 06:25:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:57,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-01-11 06:25:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:57,139 INFO L225 Difference]: With dead ends: 660 [2022-01-11 06:25:57,139 INFO L226 Difference]: Without dead ends: 533 [2022-01-11 06:25:57,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:57,142 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 196 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:57,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:25:57,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-11 06:25:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2022-01-11 06:25:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.6716981132075472) internal successors, (886), 530 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 886 transitions. [2022-01-11 06:25:57,188 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 886 transitions. Word has length 114 [2022-01-11 06:25:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:57,189 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 886 transitions. [2022-01-11 06:25:57,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 886 transitions. [2022-01-11 06:25:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 06:25:57,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:57,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:57,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:25:57,190 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2059909777, now seen corresponding path program 1 times [2022-01-11 06:25:57,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:57,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564053281] [2022-01-11 06:25:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:57,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:57,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:57,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564053281] [2022-01-11 06:25:57,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564053281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:57,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:57,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:57,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887125496] [2022-01-11 06:25:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:57,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:57,390 INFO L87 Difference]: Start difference. First operand 531 states and 886 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:57,546 INFO L93 Difference]: Finished difference Result 1526 states and 2539 transitions. [2022-01-11 06:25:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:57,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 114 [2022-01-11 06:25:57,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:57,552 INFO L225 Difference]: With dead ends: 1526 [2022-01-11 06:25:57,552 INFO L226 Difference]: Without dead ends: 1042 [2022-01-11 06:25:57,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:25:57,556 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1229 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:57,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 1201 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:25:57,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-01-11 06:25:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2022-01-11 06:25:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 1.6631376323387872) internal successors, (1728), 1039 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1728 transitions. [2022-01-11 06:25:57,634 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1728 transitions. Word has length 114 [2022-01-11 06:25:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:57,635 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1728 transitions. [2022-01-11 06:25:57,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1728 transitions. [2022-01-11 06:25:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 06:25:57,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:57,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:57,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:25:57,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash 664103724, now seen corresponding path program 1 times [2022-01-11 06:25:57,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:57,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582147126] [2022-01-11 06:25:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:57,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:57,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:57,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582147126] [2022-01-11 06:25:57,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582147126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:57,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:57,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:25:57,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983119076] [2022-01-11 06:25:57,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:57,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:25:57,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:57,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:25:57,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:25:57,855 INFO L87 Difference]: Start difference. First operand 1040 states and 1728 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:58,170 INFO L93 Difference]: Finished difference Result 4057 states and 6731 transitions. [2022-01-11 06:25:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:25:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 116 [2022-01-11 06:25:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:58,182 INFO L225 Difference]: With dead ends: 4057 [2022-01-11 06:25:58,182 INFO L226 Difference]: Without dead ends: 3029 [2022-01-11 06:25:58,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:25:58,188 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2086 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:58,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2086 Valid, 1672 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:25:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2022-01-11 06:25:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2040. [2022-01-11 06:25:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2039 states have (on average 1.6522805296714076) internal successors, (3369), 2039 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3369 transitions. [2022-01-11 06:25:58,338 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3369 transitions. Word has length 116 [2022-01-11 06:25:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:58,339 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3369 transitions. [2022-01-11 06:25:58,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3369 transitions. [2022-01-11 06:25:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 06:25:58,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:58,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:58,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:25:58,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:58,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 849886689, now seen corresponding path program 1 times [2022-01-11 06:25:58,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:58,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526811701] [2022-01-11 06:25:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:58,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:58,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:58,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526811701] [2022-01-11 06:25:58,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526811701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:58,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:58,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:25:58,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723868812] [2022-01-11 06:25:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:58,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:25:58,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:25:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:58,418 INFO L87 Difference]: Start difference. First operand 2040 states and 3369 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:58,756 INFO L93 Difference]: Finished difference Result 6063 states and 10009 transitions. [2022-01-11 06:25:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:25:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2022-01-11 06:25:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:58,771 INFO L225 Difference]: With dead ends: 6063 [2022-01-11 06:25:58,772 INFO L226 Difference]: Without dead ends: 4052 [2022-01-11 06:25:58,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:25:58,778 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 503 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1534 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 [2022-01-11 06:25:58,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1534 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:25:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2022-01-11 06:25:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2054. [2022-01-11 06:25:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2053 states have (on average 1.6492937165124208) internal successors, (3386), 2053 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3386 transitions. [2022-01-11 06:25:58,975 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3386 transitions. Word has length 118 [2022-01-11 06:25:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:58,975 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 3386 transitions. [2022-01-11 06:25:58,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3386 transitions. [2022-01-11 06:25:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-11 06:25:58,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:58,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:58,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:25:58,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -108816981, now seen corresponding path program 1 times [2022-01-11 06:25:58,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:58,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306701879] [2022-01-11 06:25:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:58,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:25:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:25:59,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:25:59,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306701879] [2022-01-11 06:25:59,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306701879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:25:59,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:25:59,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:25:59,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965681495] [2022-01-11 06:25:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:25:59,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:25:59,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:25:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:25:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:25:59,197 INFO L87 Difference]: Start difference. First operand 2054 states and 3386 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:25:59,608 INFO L93 Difference]: Finished difference Result 5965 states and 9830 transitions. [2022-01-11 06:25:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:25:59,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2022-01-11 06:25:59,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:25:59,621 INFO L225 Difference]: With dead ends: 5965 [2022-01-11 06:25:59,621 INFO L226 Difference]: Without dead ends: 4031 [2022-01-11 06:25:59,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:25:59,625 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1220 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:25:59,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 1201 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:25:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2022-01-11 06:25:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 4029. [2022-01-11 06:25:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4029 states, 4028 states have (on average 1.641012909632572) internal successors, (6610), 4028 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4029 states to 4029 states and 6610 transitions. [2022-01-11 06:25:59,925 INFO L78 Accepts]: Start accepts. Automaton has 4029 states and 6610 transitions. Word has length 119 [2022-01-11 06:25:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:25:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 4029 states and 6610 transitions. [2022-01-11 06:25:59,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:25:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4029 states and 6610 transitions. [2022-01-11 06:25:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-11 06:25:59,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:25:59,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:25:59,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:25:59,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:25:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:25:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash -355505960, now seen corresponding path program 1 times [2022-01-11 06:25:59,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:25:59,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473057422] [2022-01-11 06:25:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:25:59,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:25:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:00,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:00,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473057422] [2022-01-11 06:26:00,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473057422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:00,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:00,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:26:00,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058144149] [2022-01-11 06:26:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:00,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:26:00,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:26:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:26:00,004 INFO L87 Difference]: Start difference. First operand 4029 states and 6610 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:00,759 INFO L93 Difference]: Finished difference Result 14037 states and 22877 transitions. [2022-01-11 06:26:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:26:00,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 120 [2022-01-11 06:26:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:00,804 INFO L225 Difference]: With dead ends: 14037 [2022-01-11 06:26:00,804 INFO L226 Difference]: Without dead ends: 10567 [2022-01-11 06:26:00,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:00,811 INFO L933 BasicCegarLoop]: 1202 mSDtfsCounter, 1172 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:00,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 2594 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-01-11 06:26:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 4517. [2022-01-11 06:26:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4516 states have (on average 1.6470327723649247) internal successors, (7438), 4516 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 7438 transitions. [2022-01-11 06:26:01,214 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 7438 transitions. Word has length 120 [2022-01-11 06:26:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:01,214 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 7438 transitions. [2022-01-11 06:26:01,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 7438 transitions. [2022-01-11 06:26:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-11 06:26:01,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:01,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:01,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:26:01,219 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 458274514, now seen corresponding path program 1 times [2022-01-11 06:26:01,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:01,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778601541] [2022-01-11 06:26:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:01,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:01,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778601541] [2022-01-11 06:26:01,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778601541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:01,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:01,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:01,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208524722] [2022-01-11 06:26:01,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:01,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:01,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:01,400 INFO L87 Difference]: Start difference. First operand 4517 states and 7438 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:03,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:26:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:04,279 INFO L93 Difference]: Finished difference Result 9461 states and 15700 transitions. [2022-01-11 06:26:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:04,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-01-11 06:26:04,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:04,293 INFO L225 Difference]: With dead ends: 9461 [2022-01-11 06:26:04,293 INFO L226 Difference]: Without dead ends: 6887 [2022-01-11 06:26:04,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:04,298 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 186 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1018 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 [2022-01-11 06:26:04,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1018 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:26:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6887 states. [2022-01-11 06:26:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6887 to 6885. [2022-01-11 06:26:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6884 states have (on average 1.6499128413712958) internal successors, (11358), 6884 states have internal predecessors, (11358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 11358 transitions. [2022-01-11 06:26:04,941 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 11358 transitions. Word has length 121 [2022-01-11 06:26:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:04,942 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 11358 transitions. [2022-01-11 06:26:04,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 11358 transitions. [2022-01-11 06:26:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 06:26:04,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:04,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:04,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:26:04,950 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:04,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -427255606, now seen corresponding path program 1 times [2022-01-11 06:26:04,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:04,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250892196] [2022-01-11 06:26:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:04,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:05,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:05,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250892196] [2022-01-11 06:26:05,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250892196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:05,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:05,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:05,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331714866] [2022-01-11 06:26:05,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:05,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:05,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:05,059 INFO L87 Difference]: Start difference. First operand 6885 states and 11358 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:06,246 INFO L93 Difference]: Finished difference Result 18863 states and 30981 transitions. [2022-01-11 06:26:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:06,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-01-11 06:26:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:06,271 INFO L225 Difference]: With dead ends: 18863 [2022-01-11 06:26:06,271 INFO L226 Difference]: Without dead ends: 13039 [2022-01-11 06:26:06,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:06,279 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 388 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:06,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1487 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13039 states. [2022-01-11 06:26:07,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13039 to 13037. [2022-01-11 06:26:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13037 states, 13036 states have (on average 1.638079165388156) internal successors, (21354), 13036 states have internal predecessors, (21354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 21354 transitions. [2022-01-11 06:26:07,497 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 21354 transitions. Word has length 124 [2022-01-11 06:26:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:07,497 INFO L470 AbstractCegarLoop]: Abstraction has 13037 states and 21354 transitions. [2022-01-11 06:26:07,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 21354 transitions. [2022-01-11 06:26:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 06:26:07,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:07,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:07,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:26:07,507 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:07,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1684571672, now seen corresponding path program 1 times [2022-01-11 06:26:07,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:07,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272674420] [2022-01-11 06:26:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:07,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:07,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:07,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272674420] [2022-01-11 06:26:07,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272674420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:07,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:07,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:07,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372183324] [2022-01-11 06:26:07,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:07,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:07,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:07,554 INFO L87 Difference]: Start difference. First operand 13037 states and 21354 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:09,292 INFO L93 Difference]: Finished difference Result 25902 states and 42310 transitions. [2022-01-11 06:26:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:09,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-01-11 06:26:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:09,323 INFO L225 Difference]: With dead ends: 25902 [2022-01-11 06:26:09,323 INFO L226 Difference]: Without dead ends: 19097 [2022-01-11 06:26:09,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:09,334 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 503 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1217 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 [2022-01-11 06:26:09,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1217 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19097 states. [2022-01-11 06:26:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19097 to 13037. [2022-01-11 06:26:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13037 states, 13036 states have (on average 1.6373120589137773) internal successors, (21344), 13036 states have internal predecessors, (21344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 21344 transitions. [2022-01-11 06:26:10,513 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 21344 transitions. Word has length 124 [2022-01-11 06:26:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:10,513 INFO L470 AbstractCegarLoop]: Abstraction has 13037 states and 21344 transitions. [2022-01-11 06:26:10,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 21344 transitions. [2022-01-11 06:26:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 06:26:10,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:10,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:10,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:26:10,526 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 440297764, now seen corresponding path program 1 times [2022-01-11 06:26:10,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:10,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702186659] [2022-01-11 06:26:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:10,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:10,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:10,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702186659] [2022-01-11 06:26:10,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702186659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:10,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:10,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:10,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449783615] [2022-01-11 06:26:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:10,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:10,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:10,624 INFO L87 Difference]: Start difference. First operand 13037 states and 21344 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:13,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:26:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:14,340 INFO L93 Difference]: Finished difference Result 22153 states and 36538 transitions. [2022-01-11 06:26:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:14,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-01-11 06:26:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:14,368 INFO L225 Difference]: With dead ends: 22153 [2022-01-11 06:26:14,368 INFO L226 Difference]: Without dead ends: 17127 [2022-01-11 06:26:14,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:14,380 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 187 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:14,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1146 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:26:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17127 states. [2022-01-11 06:26:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17127 to 17125. [2022-01-11 06:26:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17125 states, 17124 states have (on average 1.6398037841625788) internal successors, (28080), 17124 states have internal predecessors, (28080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17125 states to 17125 states and 28080 transitions. [2022-01-11 06:26:15,856 INFO L78 Accepts]: Start accepts. Automaton has 17125 states and 28080 transitions. Word has length 125 [2022-01-11 06:26:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:15,856 INFO L470 AbstractCegarLoop]: Abstraction has 17125 states and 28080 transitions. [2022-01-11 06:26:15,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17125 states and 28080 transitions. [2022-01-11 06:26:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 06:26:15,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:15,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:15,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:26:15,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash 257358922, now seen corresponding path program 1 times [2022-01-11 06:26:15,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:15,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324078323] [2022-01-11 06:26:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:15,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:15,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:15,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324078323] [2022-01-11 06:26:15,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324078323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:15,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:15,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:26:15,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093649448] [2022-01-11 06:26:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:15,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:26:15,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:26:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:26:15,977 INFO L87 Difference]: Start difference. First operand 17125 states and 28080 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:19,218 INFO L93 Difference]: Finished difference Result 49967 states and 81905 transitions. [2022-01-11 06:26:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:26:19,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 125 [2022-01-11 06:26:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:19,292 INFO L225 Difference]: With dead ends: 49967 [2022-01-11 06:26:19,292 INFO L226 Difference]: Without dead ends: 33491 [2022-01-11 06:26:19,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:19,324 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1176 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:19,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1174 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:26:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33491 states. [2022-01-11 06:26:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33491 to 33489. [2022-01-11 06:26:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33489 states, 33488 states have (on average 1.6340480172001912) internal successors, (54721), 33488 states have internal predecessors, (54721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33489 states to 33489 states and 54721 transitions. [2022-01-11 06:26:22,768 INFO L78 Accepts]: Start accepts. Automaton has 33489 states and 54721 transitions. Word has length 125 [2022-01-11 06:26:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:22,769 INFO L470 AbstractCegarLoop]: Abstraction has 33489 states and 54721 transitions. [2022-01-11 06:26:22,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 33489 states and 54721 transitions. [2022-01-11 06:26:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:26:22,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:22,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:22,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:26:22,783 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1606374147, now seen corresponding path program 1 times [2022-01-11 06:26:22,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:22,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996584610] [2022-01-11 06:26:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:22,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:22,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:22,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996584610] [2022-01-11 06:26:22,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996584610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:22,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:22,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:26:22,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352195342] [2022-01-11 06:26:22,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:22,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:26:22,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:26:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:22,920 INFO L87 Difference]: Start difference. First operand 33489 states and 54721 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:28,726 INFO L93 Difference]: Finished difference Result 86557 states and 140921 transitions. [2022-01-11 06:26:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:26:28,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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 127 [2022-01-11 06:26:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:28,838 INFO L225 Difference]: With dead ends: 86557 [2022-01-11 06:26:28,838 INFO L226 Difference]: Without dead ends: 53488 [2022-01-11 06:26:28,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:26:28,896 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1383 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:28,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 2155 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:26:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53488 states. [2022-01-11 06:26:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53488 to 34160. [2022-01-11 06:26:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34160 states, 34159 states have (on average 1.634737550865072) internal successors, (55841), 34159 states have internal predecessors, (55841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34160 states to 34160 states and 55841 transitions. [2022-01-11 06:26:33,325 INFO L78 Accepts]: Start accepts. Automaton has 34160 states and 55841 transitions. Word has length 127 [2022-01-11 06:26:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:33,325 INFO L470 AbstractCegarLoop]: Abstraction has 34160 states and 55841 transitions. [2022-01-11 06:26:33,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 34160 states and 55841 transitions. [2022-01-11 06:26:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 06:26:33,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:33,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:33,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:26:33,340 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 808122584, now seen corresponding path program 1 times [2022-01-11 06:26:33,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:33,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397394793] [2022-01-11 06:26:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:33,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:33,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397394793] [2022-01-11 06:26:33,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397394793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:33,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:33,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:33,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513533850] [2022-01-11 06:26:33,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:33,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:33,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:33,396 INFO L87 Difference]: Start difference. First operand 34160 states and 55841 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:41,336 INFO L93 Difference]: Finished difference Result 101063 states and 165113 transitions. [2022-01-11 06:26:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:41,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 129 [2022-01-11 06:26:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:41,494 INFO L225 Difference]: With dead ends: 101063 [2022-01-11 06:26:41,494 INFO L226 Difference]: Without dead ends: 67644 [2022-01-11 06:26:41,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:41,535 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 470 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1501 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 [2022-01-11 06:26:41,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1501 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67644 states. [2022-01-11 06:26:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67644 to 34438. [2022-01-11 06:26:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34438 states, 34437 states have (on average 1.6312686935563492) internal successors, (56176), 34437 states have internal predecessors, (56176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34438 states to 34438 states and 56176 transitions. [2022-01-11 06:26:46,092 INFO L78 Accepts]: Start accepts. Automaton has 34438 states and 56176 transitions. Word has length 129 [2022-01-11 06:26:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:46,092 INFO L470 AbstractCegarLoop]: Abstraction has 34438 states and 56176 transitions. [2022-01-11 06:26:46,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 34438 states and 56176 transitions. [2022-01-11 06:26:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 06:26:46,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:46,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:46,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:26:46,109 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1348687387, now seen corresponding path program 1 times [2022-01-11 06:26:46,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:46,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476607189] [2022-01-11 06:26:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:46,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:46,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:46,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476607189] [2022-01-11 06:26:46,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476607189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:46,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:46,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:46,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574344973] [2022-01-11 06:26:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:46,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:46,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:46,219 INFO L87 Difference]: Start difference. First operand 34438 states and 56176 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:54,589 INFO L93 Difference]: Finished difference Result 97798 states and 159346 transitions. [2022-01-11 06:26:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:54,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 129 [2022-01-11 06:26:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:54,723 INFO L225 Difference]: With dead ends: 97798 [2022-01-11 06:26:54,723 INFO L226 Difference]: Without dead ends: 66684 [2022-01-11 06:26:54,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:54,762 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 376 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:54,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1476 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66684 states.