/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:37:10,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:37:10,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:37:10,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:37:10,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:37:10,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:37:10,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:37:10,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:37:10,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:37:10,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:37:10,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:37:10,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:37:10,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:37:10,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:37:10,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:37:10,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:37:10,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:37:10,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:37:10,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:37:10,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:37:10,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:37:10,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:37:10,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:37:10,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:37:10,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:37:10,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:37:10,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:37:10,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:37:10,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:37:10,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:37:10,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:37:10,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:37:10,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:37:10,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:37:10,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:37:10,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:37:10,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:37:10,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:37:10,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:37:10,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:37:10,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:37:10,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:37:10,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:37:10,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:37:10,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:37:10,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:37:10,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:37:10,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:37:10,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:37:10,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:37:10,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:37:10,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:37:10,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:37:10,823 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:37:10,824 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:37:11,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:37:11,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:37:11,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:37:11,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:37:11,043 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:37:11,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-11 00:37:11,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7718634c9/8ddcd25391414657a7cc91e4470521e8/FLAG5d9f40c75 [2022-01-11 00:37:11,425 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:37:11,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-11 00:37:11,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7718634c9/8ddcd25391414657a7cc91e4470521e8/FLAG5d9f40c75 [2022-01-11 00:37:11,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7718634c9/8ddcd25391414657a7cc91e4470521e8 [2022-01-11 00:37:11,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:37:11,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:37:11,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:37:11,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:37:11,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:37:11,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:37:11" (1/1) ... [2022-01-11 00:37:11,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28eeaf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:11, skipping insertion in model container [2022-01-11 00:37:11,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:37:11" (1/1) ... [2022-01-11 00:37:11,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:37:11,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:37:12,059 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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7233,7246] [2022-01-11 00:37:12,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:37:12,117 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:37:12,164 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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7233,7246] [2022-01-11 00:37:12,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:37:12,205 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:37:12,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12 WrapperNode [2022-01-11 00:37:12,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:37:12,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:37:12,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:37:12,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:37:12,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,243 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 570 [2022-01-11 00:37:12,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:37:12,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:37:12,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:37:12,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:37:12,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:37:12,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:37:12,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:37:12,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:37:12,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:12,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:37:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:37:12,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:37:12,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:37:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:37:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:37:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:37:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:37:12,444 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:37:12,445 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:37:12,815 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:37:12,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:37:12,820 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:37:12,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:37:12 BoogieIcfgContainer [2022-01-11 00:37:12,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:37:12,822 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:37:12,822 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:37:12,824 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:37:12,826 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:37:12" (1/1) ... [2022-01-11 00:37:13,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:37:13 BasicIcfg [2022-01-11 00:37:13,132 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:37:13,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:37:13,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:37:13,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:37:13,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:37:11" (1/4) ... [2022-01-11 00:37:13,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47ed7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:37:13, skipping insertion in model container [2022-01-11 00:37:13,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:12" (2/4) ... [2022-01-11 00:37:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47ed7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:37:13, skipping insertion in model container [2022-01-11 00:37:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:37:12" (3/4) ... [2022-01-11 00:37:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47ed7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:37:13, skipping insertion in model container [2022-01-11 00:37:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:37:13" (4/4) ... [2022-01-11 00:37:13,139 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:37:13,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:37:13,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:37:13,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:37:13,189 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:37:13,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:37:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 00:37:13,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:13,207 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] [2022-01-11 00:37:13,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash -753386120, now seen corresponding path program 1 times [2022-01-11 00:37:13,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:13,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009578777] [2022-01-11 00:37:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:13,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:13,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:13,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009578777] [2022-01-11 00:37:13,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009578777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:13,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:13,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:13,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030903036] [2022-01-11 00:37:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:13,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:13,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:13,677 INFO L87 Difference]: Start difference. First operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:15,714 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 00:37:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:15,957 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2022-01-11 00:37:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-11 00:37:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:15,965 INFO L225 Difference]: With dead ends: 288 [2022-01-11 00:37:15,965 INFO L226 Difference]: Without dead ends: 201 [2022-01-11 00:37:15,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:15,969 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 131 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:15,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 496 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:37:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-11 00:37:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2022-01-11 00:37:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 198 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2022-01-11 00:37:16,006 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2022-01-11 00:37:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:16,006 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2022-01-11 00:37:16,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2022-01-11 00:37:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:37:16,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:16,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:16,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:37:16,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash -694755855, now seen corresponding path program 1 times [2022-01-11 00:37:16,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:16,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783636676] [2022-01-11 00:37:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:16,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:16,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783636676] [2022-01-11 00:37:16,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783636676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:16,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:16,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:16,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103022370] [2022-01-11 00:37:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:16,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:16,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:16,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:16,155 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:16,203 INFO L93 Difference]: Finished difference Result 338 states and 548 transitions. [2022-01-11 00:37:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:16,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 00:37:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:16,207 INFO L225 Difference]: With dead ends: 338 [2022-01-11 00:37:16,207 INFO L226 Difference]: Without dead ends: 260 [2022-01-11 00:37:16,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:16,208 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:16,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 468 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-11 00:37:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2022-01-11 00:37:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.6070038910505837) internal successors, (413), 257 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 413 transitions. [2022-01-11 00:37:16,232 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 413 transitions. Word has length 59 [2022-01-11 00:37:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:16,233 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 413 transitions. [2022-01-11 00:37:16,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 413 transitions. [2022-01-11 00:37:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 00:37:16,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:16,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:16,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:37:16,234 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash 734424448, now seen corresponding path program 1 times [2022-01-11 00:37:16,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:16,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842535601] [2022-01-11 00:37:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:16,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:16,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:16,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842535601] [2022-01-11 00:37:16,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842535601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:16,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:16,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:16,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642511164] [2022-01-11 00:37:16,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:16,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:16,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:16,325 INFO L87 Difference]: Start difference. First operand 258 states and 413 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:16,399 INFO L93 Difference]: Finished difference Result 732 states and 1168 transitions. [2022-01-11 00:37:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:16,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 00:37:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:16,401 INFO L225 Difference]: With dead ends: 732 [2022-01-11 00:37:16,401 INFO L226 Difference]: Without dead ends: 499 [2022-01-11 00:37:16,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:16,402 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 417 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:16,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 493 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-01-11 00:37:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2022-01-11 00:37:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.594758064516129) internal successors, (791), 496 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 791 transitions. [2022-01-11 00:37:16,432 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 791 transitions. Word has length 59 [2022-01-11 00:37:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:16,432 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 791 transitions. [2022-01-11 00:37:16,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 791 transitions. [2022-01-11 00:37:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 00:37:16,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:16,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:37:16,434 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2082807306, now seen corresponding path program 1 times [2022-01-11 00:37:16,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:16,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125184918] [2022-01-11 00:37:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:16,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:16,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125184918] [2022-01-11 00:37:16,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125184918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:16,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:16,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:16,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972397601] [2022-01-11 00:37:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:16,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:16,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:16,498 INFO L87 Difference]: Start difference. First operand 497 states and 791 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:16,568 INFO L93 Difference]: Finished difference Result 1453 states and 2309 transitions. [2022-01-11 00:37:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 00:37:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:16,572 INFO L225 Difference]: With dead ends: 1453 [2022-01-11 00:37:16,572 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 00:37:16,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:16,573 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 193 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:16,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 589 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 00:37:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 499. [2022-01-11 00:37:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.5923694779116466) internal successors, (793), 498 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 793 transitions. [2022-01-11 00:37:16,606 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 793 transitions. Word has length 60 [2022-01-11 00:37:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:16,606 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 793 transitions. [2022-01-11 00:37:16,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 793 transitions. [2022-01-11 00:37:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 00:37:16,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:16,607 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] [2022-01-11 00:37:16,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:37:16,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2059998971, now seen corresponding path program 1 times [2022-01-11 00:37:16,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:16,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729851771] [2022-01-11 00:37:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:16,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:16,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729851771] [2022-01-11 00:37:16,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729851771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:16,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:16,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:37:16,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398730244] [2022-01-11 00:37:16,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:16,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:37:16,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:37:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:16,699 INFO L87 Difference]: Start difference. First operand 499 states and 793 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:16,875 INFO L93 Difference]: Finished difference Result 1918 states and 3046 transitions. [2022-01-11 00:37:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:37:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 00:37:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:16,881 INFO L225 Difference]: With dead ends: 1918 [2022-01-11 00:37:16,881 INFO L226 Difference]: Without dead ends: 1431 [2022-01-11 00:37:16,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:37:16,884 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 522 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:16,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 850 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-01-11 00:37:16,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 960. [2022-01-11 00:37:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 1.5787278415015642) internal successors, (1514), 959 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1514 transitions. [2022-01-11 00:37:16,949 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1514 transitions. Word has length 61 [2022-01-11 00:37:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:16,950 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1514 transitions. [2022-01-11 00:37:16,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:16,952 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1514 transitions. [2022-01-11 00:37:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 00:37:16,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:16,957 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] [2022-01-11 00:37:16,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:37:16,957 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1393761825, now seen corresponding path program 1 times [2022-01-11 00:37:16,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:16,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134816565] [2022-01-11 00:37:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:16,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:17,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:17,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134816565] [2022-01-11 00:37:17,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134816565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:17,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:17,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:17,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192638393] [2022-01-11 00:37:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:17,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:17,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:17,041 INFO L87 Difference]: Start difference. First operand 960 states and 1514 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:17,128 INFO L93 Difference]: Finished difference Result 1676 states and 2637 transitions. [2022-01-11 00:37:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:17,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 00:37:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:17,132 INFO L225 Difference]: With dead ends: 1676 [2022-01-11 00:37:17,132 INFO L226 Difference]: Without dead ends: 732 [2022-01-11 00:37:17,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:17,136 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 69 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:17,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 647 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-01-11 00:37:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-01-11 00:37:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.5690834473324213) internal successors, (1147), 731 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1147 transitions. [2022-01-11 00:37:17,193 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1147 transitions. Word has length 61 [2022-01-11 00:37:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:17,193 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1147 transitions. [2022-01-11 00:37:17,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1147 transitions. [2022-01-11 00:37:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:37:17,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:17,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:17,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:37:17,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1711527321, now seen corresponding path program 1 times [2022-01-11 00:37:17,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:17,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112862671] [2022-01-11 00:37:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:17,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:17,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:17,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112862671] [2022-01-11 00:37:17,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112862671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:17,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:17,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:17,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295320542] [2022-01-11 00:37:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:17,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:17,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:17,241 INFO L87 Difference]: Start difference. First operand 732 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:17,301 INFO L93 Difference]: Finished difference Result 1442 states and 2253 transitions. [2022-01-11 00:37:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:17,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 00:37:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:17,304 INFO L225 Difference]: With dead ends: 1442 [2022-01-11 00:37:17,304 INFO L226 Difference]: Without dead ends: 965 [2022-01-11 00:37:17,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:17,307 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 190 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:17,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 407 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2022-01-11 00:37:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 732. [2022-01-11 00:37:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.5677154582763337) internal successors, (1146), 731 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1146 transitions. [2022-01-11 00:37:17,354 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1146 transitions. Word has length 63 [2022-01-11 00:37:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:17,354 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1146 transitions. [2022-01-11 00:37:17,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1146 transitions. [2022-01-11 00:37:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:37:17,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:17,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:17,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:37:17,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:17,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2102514838, now seen corresponding path program 1 times [2022-01-11 00:37:17,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:17,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436029109] [2022-01-11 00:37:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:17,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:17,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436029109] [2022-01-11 00:37:17,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436029109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:17,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:17,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:17,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932090459] [2022-01-11 00:37:17,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:17,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:17,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:17,423 INFO L87 Difference]: Start difference. First operand 732 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:17,537 INFO L93 Difference]: Finished difference Result 2140 states and 3353 transitions. [2022-01-11 00:37:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:17,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 00:37:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:17,542 INFO L225 Difference]: With dead ends: 2140 [2022-01-11 00:37:17,542 INFO L226 Difference]: Without dead ends: 1438 [2022-01-11 00:37:17,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:17,543 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 365 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:17,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 551 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:17,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-01-11 00:37:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 741. [2022-01-11 00:37:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.5621621621621622) internal successors, (1156), 740 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1156 transitions. [2022-01-11 00:37:17,602 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1156 transitions. Word has length 64 [2022-01-11 00:37:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:17,602 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1156 transitions. [2022-01-11 00:37:17,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1156 transitions. [2022-01-11 00:37:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:37:17,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:17,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:17,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:37:17,603 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -171895733, now seen corresponding path program 1 times [2022-01-11 00:37:17,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:17,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909259737] [2022-01-11 00:37:17,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:17,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:17,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:17,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909259737] [2022-01-11 00:37:17,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909259737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:17,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:17,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:17,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470523630] [2022-01-11 00:37:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:17,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:17,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:17,724 INFO L87 Difference]: Start difference. First operand 741 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:19,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:37:21,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:37:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:22,195 INFO L93 Difference]: Finished difference Result 1841 states and 2969 transitions. [2022-01-11 00:37:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 00:37:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:22,199 INFO L225 Difference]: With dead ends: 1841 [2022-01-11 00:37:22,199 INFO L226 Difference]: Without dead ends: 1261 [2022-01-11 00:37:22,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:22,201 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:22,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 381 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-11 00:37:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-11 00:37:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1259. [2022-01-11 00:37:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.589825119236884) internal successors, (2000), 1258 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2000 transitions. [2022-01-11 00:37:22,316 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2000 transitions. Word has length 64 [2022-01-11 00:37:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:22,317 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2000 transitions. [2022-01-11 00:37:22,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2000 transitions. [2022-01-11 00:37:22,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:37:22,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:22,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:22,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:37:22,318 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash -481632190, now seen corresponding path program 1 times [2022-01-11 00:37:22,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:22,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070715193] [2022-01-11 00:37:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:22,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:22,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070715193] [2022-01-11 00:37:22,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070715193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:22,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:22,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:22,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128029510] [2022-01-11 00:37:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:22,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:22,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:22,410 INFO L87 Difference]: Start difference. First operand 1259 states and 2000 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:22,615 INFO L93 Difference]: Finished difference Result 3447 states and 5556 transitions. [2022-01-11 00:37:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 00:37:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:22,622 INFO L225 Difference]: With dead ends: 3447 [2022-01-11 00:37:22,622 INFO L226 Difference]: Without dead ends: 2349 [2022-01-11 00:37:22,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:22,624 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 136 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:22,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 545 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2022-01-11 00:37:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2347. [2022-01-11 00:37:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 1.5839727195225917) internal successors, (3716), 2346 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3716 transitions. [2022-01-11 00:37:22,842 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3716 transitions. Word has length 66 [2022-01-11 00:37:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:22,843 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3716 transitions. [2022-01-11 00:37:22,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3716 transitions. [2022-01-11 00:37:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:37:22,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:22,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:22,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:37:22,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1424708173, now seen corresponding path program 1 times [2022-01-11 00:37:22,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:22,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905409969] [2022-01-11 00:37:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:22,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:22,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905409969] [2022-01-11 00:37:22,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905409969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:22,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:22,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:22,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316676326] [2022-01-11 00:37:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:22,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:22,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:22,901 INFO L87 Difference]: Start difference. First operand 2347 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:23,195 INFO L93 Difference]: Finished difference Result 4326 states and 6956 transitions. [2022-01-11 00:37:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 00:37:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:23,204 INFO L225 Difference]: With dead ends: 4326 [2022-01-11 00:37:23,204 INFO L226 Difference]: Without dead ends: 3213 [2022-01-11 00:37:23,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:23,208 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 108 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:23,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-01-11 00:37:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3211. [2022-01-11 00:37:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 3210 states have (on average 1.5903426791277258) internal successors, (5105), 3210 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 5105 transitions. [2022-01-11 00:37:23,478 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 5105 transitions. Word has length 66 [2022-01-11 00:37:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:23,478 INFO L470 AbstractCegarLoop]: Abstraction has 3211 states and 5105 transitions. [2022-01-11 00:37:23,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 5105 transitions. [2022-01-11 00:37:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:37:23,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:23,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:23,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:37:23,479 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:23,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash 709957149, now seen corresponding path program 1 times [2022-01-11 00:37:23,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:23,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591414055] [2022-01-11 00:37:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:23,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:23,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:23,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591414055] [2022-01-11 00:37:23,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591414055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:23,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:23,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:23,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792723807] [2022-01-11 00:37:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:23,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:23,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:23,552 INFO L87 Difference]: Start difference. First operand 3211 states and 5105 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:24,133 INFO L93 Difference]: Finished difference Result 9321 states and 14854 transitions. [2022-01-11 00:37:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 00:37:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:24,150 INFO L225 Difference]: With dead ends: 9321 [2022-01-11 00:37:24,150 INFO L226 Difference]: Without dead ends: 6178 [2022-01-11 00:37:24,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:24,154 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 395 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:24,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 468 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2022-01-11 00:37:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 6176. [2022-01-11 00:37:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 6175 states have (on average 1.5860728744939272) internal successors, (9794), 6175 states have internal predecessors, (9794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 9794 transitions. [2022-01-11 00:37:24,726 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 9794 transitions. Word has length 66 [2022-01-11 00:37:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:24,727 INFO L470 AbstractCegarLoop]: Abstraction has 6176 states and 9794 transitions. [2022-01-11 00:37:24,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 9794 transitions. [2022-01-11 00:37:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:37:24,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:24,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:24,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:37:24,729 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2012846176, now seen corresponding path program 1 times [2022-01-11 00:37:24,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:24,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638400425] [2022-01-11 00:37:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:24,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:24,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638400425] [2022-01-11 00:37:24,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638400425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:24,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:24,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:24,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714973134] [2022-01-11 00:37:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:24,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:24,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:24,777 INFO L87 Difference]: Start difference. First operand 6176 states and 9794 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:25,334 INFO L93 Difference]: Finished difference Result 9155 states and 14558 transitions. [2022-01-11 00:37:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:25,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-11 00:37:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:25,347 INFO L225 Difference]: With dead ends: 9155 [2022-01-11 00:37:25,347 INFO L226 Difference]: Without dead ends: 5185 [2022-01-11 00:37:25,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:25,352 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 47 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:25,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states. [2022-01-11 00:37:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 5185. [2022-01-11 00:37:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 1.5831404320987654) internal successors, (8207), 5184 states have internal predecessors, (8207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 8207 transitions. [2022-01-11 00:37:25,812 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 8207 transitions. Word has length 68 [2022-01-11 00:37:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:25,813 INFO L470 AbstractCegarLoop]: Abstraction has 5185 states and 8207 transitions. [2022-01-11 00:37:25,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 8207 transitions. [2022-01-11 00:37:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:37:25,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:25,814 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] [2022-01-11 00:37:25,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:37:25,814 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1537664968, now seen corresponding path program 1 times [2022-01-11 00:37:25,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963116584] [2022-01-11 00:37:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:25,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:25,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963116584] [2022-01-11 00:37:25,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963116584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:25,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:25,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:37:25,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337584334] [2022-01-11 00:37:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:25,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:37:25,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:37:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:25,897 INFO L87 Difference]: Start difference. First operand 5185 states and 8207 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:26,829 INFO L93 Difference]: Finished difference Result 13589 states and 21450 transitions. [2022-01-11 00:37:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:37:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-11 00:37:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:26,845 INFO L225 Difference]: With dead ends: 13589 [2022-01-11 00:37:26,845 INFO L226 Difference]: Without dead ends: 8448 [2022-01-11 00:37:26,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:37:26,853 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 513 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:26,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 813 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:26,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2022-01-11 00:37:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 5327. [2022-01-11 00:37:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5327 states, 5326 states have (on average 1.5715358618099888) internal successors, (8370), 5326 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5327 states to 5327 states and 8370 transitions. [2022-01-11 00:37:27,449 INFO L78 Accepts]: Start accepts. Automaton has 5327 states and 8370 transitions. Word has length 68 [2022-01-11 00:37:27,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:27,449 INFO L470 AbstractCegarLoop]: Abstraction has 5327 states and 8370 transitions. [2022-01-11 00:37:27,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5327 states and 8370 transitions. [2022-01-11 00:37:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:37:27,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:27,450 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] [2022-01-11 00:37:27,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:37:27,451 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1845262692, now seen corresponding path program 1 times [2022-01-11 00:37:27,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:27,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359720516] [2022-01-11 00:37:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:27,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:27,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:27,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359720516] [2022-01-11 00:37:27,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359720516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:27,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:27,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:27,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26383748] [2022-01-11 00:37:27,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:27,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:27,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:27,512 INFO L87 Difference]: Start difference. First operand 5327 states and 8370 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:27,937 INFO L93 Difference]: Finished difference Result 9612 states and 15082 transitions. [2022-01-11 00:37:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:27,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-11 00:37:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:27,943 INFO L225 Difference]: With dead ends: 9612 [2022-01-11 00:37:27,943 INFO L226 Difference]: Without dead ends: 4321 [2022-01-11 00:37:27,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:27,948 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 47 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:27,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 623 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2022-01-11 00:37:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4321. [2022-01-11 00:37:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.5650462962962963) internal successors, (6761), 4320 states have internal predecessors, (6761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6761 transitions. [2022-01-11 00:37:28,347 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6761 transitions. Word has length 68 [2022-01-11 00:37:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:28,347 INFO L470 AbstractCegarLoop]: Abstraction has 4321 states and 6761 transitions. [2022-01-11 00:37:28,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6761 transitions. [2022-01-11 00:37:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:37:28,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:28,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:28,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:37:28,349 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash 700676502, now seen corresponding path program 1 times [2022-01-11 00:37:28,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:28,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464070313] [2022-01-11 00:37:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:28,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:28,385 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 00:37:28,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:28,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464070313] [2022-01-11 00:37:28,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464070313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:28,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:28,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:28,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441052644] [2022-01-11 00:37:28,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:28,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:28,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:28,387 INFO L87 Difference]: Start difference. First operand 4321 states and 6761 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:28,928 INFO L93 Difference]: Finished difference Result 8578 states and 13440 transitions. [2022-01-11 00:37:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 00:37:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:28,937 INFO L225 Difference]: With dead ends: 8578 [2022-01-11 00:37:28,937 INFO L226 Difference]: Without dead ends: 5965 [2022-01-11 00:37:28,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:28,942 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 176 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:28,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 483 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2022-01-11 00:37:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 4321. [2022-01-11 00:37:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.5643518518518518) internal successors, (6758), 4320 states have internal predecessors, (6758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6758 transitions. [2022-01-11 00:37:29,373 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6758 transitions. Word has length 70 [2022-01-11 00:37:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:29,373 INFO L470 AbstractCegarLoop]: Abstraction has 4321 states and 6758 transitions. [2022-01-11 00:37:29,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6758 transitions. [2022-01-11 00:37:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:37:29,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:29,375 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] [2022-01-11 00:37:29,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:37:29,375 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1818284684, now seen corresponding path program 1 times [2022-01-11 00:37:29,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:29,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562791398] [2022-01-11 00:37:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:29,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:29,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562791398] [2022-01-11 00:37:29,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562791398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:29,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:29,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:29,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327174561] [2022-01-11 00:37:29,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:29,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:29,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:29,505 INFO L87 Difference]: Start difference. First operand 4321 states and 6758 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:31,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:37:32,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:32,677 INFO L93 Difference]: Finished difference Result 11621 states and 18496 transitions. [2022-01-11 00:37:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:32,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-11 00:37:32,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:32,688 INFO L225 Difference]: With dead ends: 11621 [2022-01-11 00:37:32,688 INFO L226 Difference]: Without dead ends: 7737 [2022-01-11 00:37:32,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:32,691 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 99 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:32,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 375 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 00:37:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2022-01-11 00:37:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7735. [2022-01-11 00:37:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 7734 states have (on average 1.5743470390483578) internal successors, (12176), 7734 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 12176 transitions. [2022-01-11 00:37:33,549 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 12176 transitions. Word has length 71 [2022-01-11 00:37:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:33,549 INFO L470 AbstractCegarLoop]: Abstraction has 7735 states and 12176 transitions. [2022-01-11 00:37:33,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 12176 transitions. [2022-01-11 00:37:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:37:33,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:33,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:33,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:37:33,551 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2091560203, now seen corresponding path program 1 times [2022-01-11 00:37:33,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:33,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5254562] [2022-01-11 00:37:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:33,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:33,623 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 00:37:33,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5254562] [2022-01-11 00:37:33,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5254562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:33,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:33,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:33,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782984979] [2022-01-11 00:37:33,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:33,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:33,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:33,624 INFO L87 Difference]: Start difference. First operand 7735 states and 12176 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:35,036 INFO L93 Difference]: Finished difference Result 19407 states and 30766 transitions. [2022-01-11 00:37:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:35,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:37:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:35,057 INFO L225 Difference]: With dead ends: 19407 [2022-01-11 00:37:35,057 INFO L226 Difference]: Without dead ends: 12109 [2022-01-11 00:37:35,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:35,066 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 121 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 513 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 00:37:35,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12109 states. [2022-01-11 00:37:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12109 to 12107. [2022-01-11 00:37:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12107 states, 12106 states have (on average 1.5618701470345284) internal successors, (18908), 12106 states have internal predecessors, (18908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12107 states to 12107 states and 18908 transitions. [2022-01-11 00:37:36,572 INFO L78 Accepts]: Start accepts. Automaton has 12107 states and 18908 transitions. Word has length 73 [2022-01-11 00:37:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:36,573 INFO L470 AbstractCegarLoop]: Abstraction has 12107 states and 18908 transitions. [2022-01-11 00:37:36,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12107 states and 18908 transitions. [2022-01-11 00:37:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:37:36,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:36,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:36,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:37:36,575 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash 694855157, now seen corresponding path program 1 times [2022-01-11 00:37:36,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:36,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724219807] [2022-01-11 00:37:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:36,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:36,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:36,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724219807] [2022-01-11 00:37:36,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724219807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:36,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:36,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:36,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887362503] [2022-01-11 00:37:36,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:36,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:36,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:36,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:36,657 INFO L87 Difference]: Start difference. First operand 12107 states and 18908 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:38,940 INFO L93 Difference]: Finished difference Result 30416 states and 47764 transitions. [2022-01-11 00:37:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:37:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:38,972 INFO L225 Difference]: With dead ends: 30416 [2022-01-11 00:37:38,972 INFO L226 Difference]: Without dead ends: 18882 [2022-01-11 00:37:38,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:38,984 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 124 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 536 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 00:37:38,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 536 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18882 states. [2022-01-11 00:37:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18882 to 18880. [2022-01-11 00:37:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18880 states, 18879 states have (on average 1.5470628740929075) internal successors, (29207), 18879 states have internal predecessors, (29207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18880 states to 18880 states and 29207 transitions. [2022-01-11 00:37:41,333 INFO L78 Accepts]: Start accepts. Automaton has 18880 states and 29207 transitions. Word has length 73 [2022-01-11 00:37:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:41,333 INFO L470 AbstractCegarLoop]: Abstraction has 18880 states and 29207 transitions. [2022-01-11 00:37:41,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 18880 states and 29207 transitions. [2022-01-11 00:37:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 00:37:41,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:41,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:41,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:37:41,336 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:41,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1392465622, now seen corresponding path program 1 times [2022-01-11 00:37:41,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:41,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618873445] [2022-01-11 00:37:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:41,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:41,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:41,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618873445] [2022-01-11 00:37:41,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618873445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:41,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:41,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:41,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755444855] [2022-01-11 00:37:41,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:41,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:41,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:41,411 INFO L87 Difference]: Start difference. First operand 18880 states and 29207 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:44,029 INFO L93 Difference]: Finished difference Result 38876 states and 60123 transitions. [2022-01-11 00:37:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:44,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 00:37:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:44,057 INFO L225 Difference]: With dead ends: 38876 [2022-01-11 00:37:44,057 INFO L226 Difference]: Without dead ends: 20149 [2022-01-11 00:37:44,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:44,075 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 443 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:44,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 372 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20149 states. [2022-01-11 00:37:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20149 to 18939. [2022-01-11 00:37:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18939 states, 18938 states have (on average 1.5452001267293274) internal successors, (29263), 18938 states have internal predecessors, (29263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18939 states to 18939 states and 29263 transitions. [2022-01-11 00:37:46,532 INFO L78 Accepts]: Start accepts. Automaton has 18939 states and 29263 transitions. Word has length 74 [2022-01-11 00:37:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:46,532 INFO L470 AbstractCegarLoop]: Abstraction has 18939 states and 29263 transitions. [2022-01-11 00:37:46,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 18939 states and 29263 transitions. [2022-01-11 00:37:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 00:37:46,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:46,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:46,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:37:46,535 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash -683741993, now seen corresponding path program 1 times [2022-01-11 00:37:46,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057053361] [2022-01-11 00:37:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:46,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:46,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:46,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057053361] [2022-01-11 00:37:46,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057053361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:46,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:46,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:46,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037695928] [2022-01-11 00:37:46,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:46,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:46,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:46,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:46,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:46,619 INFO L87 Difference]: Start difference. First operand 18939 states and 29263 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:49,907 INFO L93 Difference]: Finished difference Result 35574 states and 55585 transitions. [2022-01-11 00:37:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:49,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 00:37:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:49,946 INFO L225 Difference]: With dead ends: 35574 [2022-01-11 00:37:49,946 INFO L226 Difference]: Without dead ends: 25900 [2022-01-11 00:37:49,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:49,958 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 100 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:49,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 424 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25900 states. [2022-01-11 00:37:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25900 to 25898. [2022-01-11 00:37:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25898 states, 25897 states have (on average 1.5492528092056994) internal successors, (40121), 25897 states have internal predecessors, (40121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25898 states to 25898 states and 40121 transitions. [2022-01-11 00:37:53,329 INFO L78 Accepts]: Start accepts. Automaton has 25898 states and 40121 transitions. Word has length 74 [2022-01-11 00:37:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:53,329 INFO L470 AbstractCegarLoop]: Abstraction has 25898 states and 40121 transitions. [2022-01-11 00:37:53,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 25898 states and 40121 transitions. [2022-01-11 00:37:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:37:53,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:53,331 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] [2022-01-11 00:37:53,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:37:53,332 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2016272890, now seen corresponding path program 1 times [2022-01-11 00:37:53,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:53,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568179823] [2022-01-11 00:37:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:53,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:53,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568179823] [2022-01-11 00:37:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568179823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:53,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:53,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:53,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934495194] [2022-01-11 00:37:53,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:53,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:53,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:53,374 INFO L87 Difference]: Start difference. First operand 25898 states and 40121 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:59,759 INFO L93 Difference]: Finished difference Result 70948 states and 110136 transitions. [2022-01-11 00:37:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-11 00:37:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:59,844 INFO L225 Difference]: With dead ends: 70948 [2022-01-11 00:37:59,844 INFO L226 Difference]: Without dead ends: 51593 [2022-01-11 00:37:59,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:59,867 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 165 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:59,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51593 states. [2022-01-11 00:38:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51593 to 25908. [2022-01-11 00:38:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25908 states, 25907 states have (on average 1.5490407997838422) internal successors, (40131), 25907 states have internal predecessors, (40131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25908 states to 25908 states and 40131 transitions. [2022-01-11 00:38:03,577 INFO L78 Accepts]: Start accepts. Automaton has 25908 states and 40131 transitions. Word has length 75 [2022-01-11 00:38:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:03,577 INFO L470 AbstractCegarLoop]: Abstraction has 25908 states and 40131 transitions. [2022-01-11 00:38:03,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 25908 states and 40131 transitions. [2022-01-11 00:38:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:38:03,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:03,579 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] [2022-01-11 00:38:03,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:38:03,579 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1024163023, now seen corresponding path program 1 times [2022-01-11 00:38:03,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:03,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486276969] [2022-01-11 00:38:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:03,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:03,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:03,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486276969] [2022-01-11 00:38:03,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486276969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:03,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:03,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:38:03,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901819902] [2022-01-11 00:38:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:03,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:38:03,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:38:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:03,688 INFO L87 Difference]: Start difference. First operand 25908 states and 40131 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:09,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:09,833 INFO L93 Difference]: Finished difference Result 66861 states and 103493 transitions. [2022-01-11 00:38:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:09,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:38:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:09,905 INFO L225 Difference]: With dead ends: 66861 [2022-01-11 00:38:09,905 INFO L226 Difference]: Without dead ends: 42441 [2022-01-11 00:38:09,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:38:09,931 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 568 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:09,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 822 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42441 states. [2022-01-11 00:38:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42441 to 26129. [2022-01-11 00:38:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26129 states, 26128 states have (on average 1.5449709124311084) internal successors, (40367), 26128 states have internal predecessors, (40367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26129 states to 26129 states and 40367 transitions. [2022-01-11 00:38:14,115 INFO L78 Accepts]: Start accepts. Automaton has 26129 states and 40367 transitions. Word has length 76 [2022-01-11 00:38:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:14,115 INFO L470 AbstractCegarLoop]: Abstraction has 26129 states and 40367 transitions. [2022-01-11 00:38:14,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 26129 states and 40367 transitions. [2022-01-11 00:38:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:38:14,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:14,117 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] [2022-01-11 00:38:14,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:38:14,117 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash -549904491, now seen corresponding path program 1 times [2022-01-11 00:38:14,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:14,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368862855] [2022-01-11 00:38:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:14,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:14,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368862855] [2022-01-11 00:38:14,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368862855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:14,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:14,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:14,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495583735] [2022-01-11 00:38:14,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:14,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:14,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:14,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:14,174 INFO L87 Difference]: Start difference. First operand 26129 states and 40367 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:17,561 INFO L93 Difference]: Finished difference Result 42353 states and 65436 transitions. [2022-01-11 00:38:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:38:17,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:38:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:17,590 INFO L225 Difference]: With dead ends: 42353 [2022-01-11 00:38:17,590 INFO L226 Difference]: Without dead ends: 22603 [2022-01-11 00:38:17,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:17,604 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 23 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:17,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 596 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22603 states. [2022-01-11 00:38:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22603 to 22603. [2022-01-11 00:38:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22602 states have (on average 1.54176621537917) internal successors, (34847), 22602 states have internal predecessors, (34847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 34847 transitions. [2022-01-11 00:38:21,036 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 34847 transitions. Word has length 76 [2022-01-11 00:38:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:21,036 INFO L470 AbstractCegarLoop]: Abstraction has 22603 states and 34847 transitions. [2022-01-11 00:38:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 34847 transitions. [2022-01-11 00:38:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:38:21,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:21,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:38:21,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:38:21,044 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1135680122, now seen corresponding path program 1 times [2022-01-11 00:38:21,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:21,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717126097] [2022-01-11 00:38:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:21,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:21,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:21,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717126097] [2022-01-11 00:38:21,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717126097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:21,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:21,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:38:21,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593885672] [2022-01-11 00:38:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:21,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:38:21,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:38:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:21,203 INFO L87 Difference]: Start difference. First operand 22603 states and 34847 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)