/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/systemc/toy.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:18:39,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:18:39,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:18:39,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:18:39,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:18:39,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:18:39,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:18:39,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:18:39,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:18:39,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:18:39,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:18:39,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:18:39,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:18:39,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:18:39,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:18:39,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:18:39,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:18:39,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:18:39,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:18:39,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:18:39,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:18:39,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:18:39,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:18:39,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:18:39,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:18:39,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:18:39,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:18:39,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:18:39,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:18:39,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:18:39,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:18:39,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:18:39,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:18:39,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:18:39,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:18:39,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:18:39,748 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 00:18:39,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:18:39,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:18:39,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:18:39,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:18:39,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:18:39,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:18:39,780 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:18:39,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:18:39,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:18:39,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:18:39,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:18:39,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:18:39,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:18:39,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:18:39,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:18:39,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:18:39,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:18:39,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:18:39,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:18:39,785 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:18:39,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:18:40,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:18:40,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:18:40,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:18:40,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:18:40,027 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:18:40,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy.cil.c [2022-01-11 00:18:40,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2a02023/b97d3bf314444f1cb9d1b9288cb3ea49/FLAGcaef8a277 [2022-01-11 00:18:40,385 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:18:40,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/toy.cil.c [2022-01-11 00:18:40,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2a02023/b97d3bf314444f1cb9d1b9288cb3ea49/FLAGcaef8a277 [2022-01-11 00:18:40,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2a02023/b97d3bf314444f1cb9d1b9288cb3ea49 [2022-01-11 00:18:40,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:18:40,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:18:40,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:18:40,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:18:40,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:18:40,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:18:40" (1/1) ... [2022-01-11 00:18:40,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50fa1197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:40, skipping insertion in model container [2022-01-11 00:18:40,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:18:40" (1/1) ... [2022-01-11 00:18:40,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:18:40,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:18:41,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/toy.cil.c[697,710] [2022-01-11 00:18:41,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:18:41,064 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:18:41,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/toy.cil.c[697,710] [2022-01-11 00:18:41,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:18:41,116 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:18:41,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41 WrapperNode [2022-01-11 00:18:41,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:18:41,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:18:41,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:18:41,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:18:41,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,151 INFO L137 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 357 [2022-01-11 00:18:41,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:18:41,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:18:41,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:18:41,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:18:41,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:18:41,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:18:41,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:18:41,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:18:41,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:18:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:18:41,217 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 00:18:41,221 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 00:18:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:18:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:18:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:18:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:18:41,313 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:18:41,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:18:41,566 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:18:41,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:18:41,571 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-11 00:18:41,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:41 BoogieIcfgContainer [2022-01-11 00:18:41,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:18:41,573 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:18:41,573 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:18:41,574 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:18:41,602 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:41" (1/1) ... [2022-01-11 00:18:41,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:18:41 BasicIcfg [2022-01-11 00:18:41,725 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:18:41,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:18:41,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:18:41,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:18:41,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:18:40" (1/4) ... [2022-01-11 00:18:41,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482897e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:18:41, skipping insertion in model container [2022-01-11 00:18:41,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:41" (2/4) ... [2022-01-11 00:18:41,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482897e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:18:41, skipping insertion in model container [2022-01-11 00:18:41,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:41" (3/4) ... [2022-01-11 00:18:41,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@482897e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:18:41, skipping insertion in model container [2022-01-11 00:18:41,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:18:41" (4/4) ... [2022-01-11 00:18:41,731 INFO L111 eAbstractionObserver]: Analyzing ICFG toy.cil.cTransformedIcfg [2022-01-11 00:18:41,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:18:41,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:18:41,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:18:41,769 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 00:18:41,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:18:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 131 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 00:18:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:41,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:41,786 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] [2022-01-11 00:18:41,786 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1572286410, now seen corresponding path program 1 times [2022-01-11 00:18:41,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:41,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918139095] [2022-01-11 00:18:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:41,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,069 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 00:18:42,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918139095] [2022-01-11 00:18:42,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918139095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:42,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73167133] [2022-01-11 00:18:42,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:42,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,107 INFO L87 Difference]: Start difference. First operand has 132 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 131 states have internal predecessors, (239), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,166 INFO L93 Difference]: Finished difference Result 253 states and 460 transitions. [2022-01-11 00:18:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:42,179 INFO L225 Difference]: With dead ends: 253 [2022-01-11 00:18:42,180 INFO L226 Difference]: Without dead ends: 127 [2022-01-11 00:18:42,182 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 00:18:42,185 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:42,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-11 00:18:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-01-11 00:18:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.746031746031746) internal successors, (220), 126 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 00:18:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 220 transitions. [2022-01-11 00:18:42,231 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 220 transitions. Word has length 36 [2022-01-11 00:18:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 220 transitions. [2022-01-11 00:18:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 220 transitions. [2022-01-11 00:18:42,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:42,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,232 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] [2022-01-11 00:18:42,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:18:42,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash -879184713, now seen corresponding path program 1 times [2022-01-11 00:18:42,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206935110] [2022-01-11 00:18:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,377 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 00:18:42,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206935110] [2022-01-11 00:18:42,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206935110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:18:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023644952] [2022-01-11 00:18:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:18:42,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:18:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:18:42,382 INFO L87 Difference]: Start difference. First operand 127 states and 220 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,491 INFO L93 Difference]: Finished difference Result 363 states and 630 transitions. [2022-01-11 00:18:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:18:42,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:42,496 INFO L225 Difference]: With dead ends: 363 [2022-01-11 00:18:42,496 INFO L226 Difference]: Without dead ends: 250 [2022-01-11 00:18:42,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:18:42,502 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 216 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:42,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 746 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-11 00:18:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2022-01-11 00:18:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.7449392712550607) internal successors, (431), 247 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 00:18:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 431 transitions. [2022-01-11 00:18:42,525 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 431 transitions. Word has length 36 [2022-01-11 00:18:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,526 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 431 transitions. [2022-01-11 00:18:42,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 431 transitions. [2022-01-11 00:18:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:42,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:42,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:18:42,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1198024630, now seen corresponding path program 1 times [2022-01-11 00:18:42,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48181049] [2022-01-11 00:18:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,609 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 00:18:42,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48181049] [2022-01-11 00:18:42,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48181049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:42,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092274028] [2022-01-11 00:18:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:42,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,612 INFO L87 Difference]: Start difference. First operand 248 states and 431 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,650 INFO L93 Difference]: Finished difference Result 561 states and 967 transitions. [2022-01-11 00:18:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:42,653 INFO L225 Difference]: With dead ends: 561 [2022-01-11 00:18:42,653 INFO L226 Difference]: Without dead ends: 345 [2022-01-11 00:18:42,657 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 00:18:42,661 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 201 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:42,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 417 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-11 00:18:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2022-01-11 00:18:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.7046783625730995) internal successors, (583), 342 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 00:18:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 583 transitions. [2022-01-11 00:18:42,686 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 583 transitions. Word has length 36 [2022-01-11 00:18:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,686 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 583 transitions. [2022-01-11 00:18:42,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 583 transitions. [2022-01-11 00:18:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:42,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,695 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] [2022-01-11 00:18:42,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:18:42,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash -914643049, now seen corresponding path program 1 times [2022-01-11 00:18:42,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673491722] [2022-01-11 00:18:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,778 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 00:18:42,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673491722] [2022-01-11 00:18:42,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673491722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:18:42,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917373552] [2022-01-11 00:18:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:18:42,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:18:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:18:42,780 INFO L87 Difference]: Start difference. First operand 343 states and 583 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,885 INFO L93 Difference]: Finished difference Result 951 states and 1614 transitions. [2022-01-11 00:18:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:18:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:42,888 INFO L225 Difference]: With dead ends: 951 [2022-01-11 00:18:42,888 INFO L226 Difference]: Without dead ends: 626 [2022-01-11 00:18:42,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:18:42,893 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 182 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:42,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 670 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-11 00:18:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 609. [2022-01-11 00:18:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.700657894736842) internal successors, (1034), 608 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 00:18:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1034 transitions. [2022-01-11 00:18:42,946 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1034 transitions. Word has length 36 [2022-01-11 00:18:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,946 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 1034 transitions. [2022-01-11 00:18:42,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1034 transitions. [2022-01-11 00:18:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:42,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,952 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] [2022-01-11 00:18:42,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:18:42,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1169379594, now seen corresponding path program 1 times [2022-01-11 00:18:42,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214583826] [2022-01-11 00:18:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:43,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:43,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214583826] [2022-01-11 00:18:43,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214583826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:43,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:43,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:18:43,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235358772] [2022-01-11 00:18:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:43,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:18:43,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:18:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:18:43,024 INFO L87 Difference]: Start difference. First operand 609 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:43,126 INFO L93 Difference]: Finished difference Result 1696 states and 2877 transitions. [2022-01-11 00:18:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:18:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:43,131 INFO L225 Difference]: With dead ends: 1696 [2022-01-11 00:18:43,131 INFO L226 Difference]: Without dead ends: 1109 [2022-01-11 00:18:43,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:18:43,133 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 386 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:43,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 490 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-11 00:18:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2022-01-11 00:18:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.683085501858736) internal successors, (1811), 1076 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states 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 00:18:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1811 transitions. [2022-01-11 00:18:43,175 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1811 transitions. Word has length 36 [2022-01-11 00:18:43,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:43,176 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 1811 transitions. [2022-01-11 00:18:43,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1811 transitions. [2022-01-11 00:18:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:43,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:43,181 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] [2022-01-11 00:18:43,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:18:43,182 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:43,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1138359787, now seen corresponding path program 1 times [2022-01-11 00:18:43,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:43,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318626600] [2022-01-11 00:18:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:43,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:43,221 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 00:18:43,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:43,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318626600] [2022-01-11 00:18:43,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318626600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:43,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:43,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:43,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565103725] [2022-01-11 00:18:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:43,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:43,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:43,223 INFO L87 Difference]: Start difference. First operand 1077 states and 1811 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:43,298 INFO L93 Difference]: Finished difference Result 3099 states and 5213 transitions. [2022-01-11 00:18:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:43,304 INFO L225 Difference]: With dead ends: 3099 [2022-01-11 00:18:43,305 INFO L226 Difference]: Without dead ends: 2051 [2022-01-11 00:18:43,307 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 00:18:43,308 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 198 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:43,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 362 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-01-11 00:18:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 2037. [2022-01-11 00:18:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2036 states have (on average 1.656188605108055) internal successors, (3372), 2036 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states 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 00:18:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3372 transitions. [2022-01-11 00:18:43,378 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3372 transitions. Word has length 36 [2022-01-11 00:18:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:43,379 INFO L470 AbstractCegarLoop]: Abstraction has 2037 states and 3372 transitions. [2022-01-11 00:18:43,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3372 transitions. [2022-01-11 00:18:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:43,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:43,381 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] [2022-01-11 00:18:43,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:18:43,381 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2073206637, now seen corresponding path program 1 times [2022-01-11 00:18:43,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:43,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120614812] [2022-01-11 00:18:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:43,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:43,455 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 00:18:43,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120614812] [2022-01-11 00:18:43,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120614812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:43,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:43,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:43,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360381463] [2022-01-11 00:18:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:43,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:43,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:43,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:43,458 INFO L87 Difference]: Start difference. First operand 2037 states and 3372 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:43,608 INFO L93 Difference]: Finished difference Result 4314 states and 7195 transitions. [2022-01-11 00:18:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:18:43,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:43,616 INFO L225 Difference]: With dead ends: 4314 [2022-01-11 00:18:43,616 INFO L226 Difference]: Without dead ends: 2348 [2022-01-11 00:18:43,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:43,619 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 434 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:43,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 543 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-11 00:18:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2022-01-11 00:18:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.650319829424307) internal successors, (3870), 2345 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states 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 00:18:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3870 transitions. [2022-01-11 00:18:43,692 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3870 transitions. Word has length 36 [2022-01-11 00:18:43,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:43,692 INFO L470 AbstractCegarLoop]: Abstraction has 2346 states and 3870 transitions. [2022-01-11 00:18:43,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3870 transitions. [2022-01-11 00:18:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:43,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:43,695 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] [2022-01-11 00:18:43,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:18:43,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -565654828, now seen corresponding path program 1 times [2022-01-11 00:18:43,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:43,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144140549] [2022-01-11 00:18:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:43,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:43,770 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 00:18:43,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:43,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144140549] [2022-01-11 00:18:43,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144140549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:43,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:43,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:43,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408090380] [2022-01-11 00:18:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:43,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:43,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:43,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:43,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:43,772 INFO L87 Difference]: Start difference. First operand 2346 states and 3870 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:43,891 INFO L93 Difference]: Finished difference Result 5011 states and 8322 transitions. [2022-01-11 00:18:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:18:43,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:43,900 INFO L225 Difference]: With dead ends: 5011 [2022-01-11 00:18:43,900 INFO L226 Difference]: Without dead ends: 2618 [2022-01-11 00:18:43,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:43,905 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 382 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:43,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 544 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-01-11 00:18:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2522. [2022-01-11 00:18:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 1.6350654502181674) internal successors, (4122), 2521 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states 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 00:18:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 4122 transitions. [2022-01-11 00:18:43,983 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 4122 transitions. Word has length 36 [2022-01-11 00:18:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:43,984 INFO L470 AbstractCegarLoop]: Abstraction has 2522 states and 4122 transitions. [2022-01-11 00:18:43,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 4122 transitions. [2022-01-11 00:18:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:43,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:43,985 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] [2022-01-11 00:18:43,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:18:43,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1076189005, now seen corresponding path program 1 times [2022-01-11 00:18:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215520637] [2022-01-11 00:18:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:44,065 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 00:18:44,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215520637] [2022-01-11 00:18:44,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215520637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:44,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:44,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:44,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638183258] [2022-01-11 00:18:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:44,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:44,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:44,067 INFO L87 Difference]: Start difference. First operand 2522 states and 4122 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:44,188 INFO L93 Difference]: Finished difference Result 5533 states and 9117 transitions. [2022-01-11 00:18:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:18:44,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:44,196 INFO L225 Difference]: With dead ends: 5533 [2022-01-11 00:18:44,197 INFO L226 Difference]: Without dead ends: 3004 [2022-01-11 00:18:44,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:44,201 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 412 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:44,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 524 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2022-01-11 00:18:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2812. [2022-01-11 00:18:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 1.6261117040199218) internal successors, (4571), 2811 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states 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 00:18:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4571 transitions. [2022-01-11 00:18:44,281 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4571 transitions. Word has length 36 [2022-01-11 00:18:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:44,282 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 4571 transitions. [2022-01-11 00:18:44,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4571 transitions. [2022-01-11 00:18:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 00:18:44,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:44,283 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] [2022-01-11 00:18:44,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:18:44,283 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:44,284 INFO L85 PathProgramCache]: Analyzing trace with hash 277120692, now seen corresponding path program 1 times [2022-01-11 00:18:44,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:44,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831078744] [2022-01-11 00:18:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:44,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:44,314 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 00:18:44,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:44,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831078744] [2022-01-11 00:18:44,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831078744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:44,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:44,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:44,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661559594] [2022-01-11 00:18:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:44,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:44,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:44,316 INFO L87 Difference]: Start difference. First operand 2812 states and 4571 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:44,403 INFO L93 Difference]: Finished difference Result 6712 states and 10896 transitions. [2022-01-11 00:18:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 00:18:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:44,416 INFO L225 Difference]: With dead ends: 6712 [2022-01-11 00:18:44,416 INFO L226 Difference]: Without dead ends: 3928 [2022-01-11 00:18:44,421 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 00:18:44,422 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 139 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:44,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 340 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2022-01-11 00:18:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3915. [2022-01-11 00:18:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3914 states have (on average 1.6009197751660704) internal successors, (6266), 3914 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 00:18:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 6266 transitions. [2022-01-11 00:18:44,559 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 6266 transitions. Word has length 36 [2022-01-11 00:18:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:44,559 INFO L470 AbstractCegarLoop]: Abstraction has 3915 states and 6266 transitions. [2022-01-11 00:18:44,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 00:18:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 6266 transitions. [2022-01-11 00:18:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 00:18:44,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:44,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:44,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:18:44,562 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1312156613, now seen corresponding path program 1 times [2022-01-11 00:18:44,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:44,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165376859] [2022-01-11 00:18:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:44,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:44,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:44,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165376859] [2022-01-11 00:18:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165376859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:44,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:44,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:44,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858362752] [2022-01-11 00:18:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:44,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:44,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:44,593 INFO L87 Difference]: Start difference. First operand 3915 states and 6266 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:18:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:44,711 INFO L93 Difference]: Finished difference Result 9383 states and 14984 transitions. [2022-01-11 00:18:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-11 00:18:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:44,729 INFO L225 Difference]: With dead ends: 9383 [2022-01-11 00:18:44,729 INFO L226 Difference]: Without dead ends: 5545 [2022-01-11 00:18:44,736 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 00:18:44,737 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 112 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:44,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 468 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-01-11 00:18:44,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 5535. [2022-01-11 00:18:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5534 states have (on average 1.5775207806288398) internal successors, (8730), 5534 states have internal predecessors, (8730), 0 states have call successors, (0), 0 states 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 00:18:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 8730 transitions. [2022-01-11 00:18:44,962 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 8730 transitions. Word has length 47 [2022-01-11 00:18:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:44,962 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 8730 transitions. [2022-01-11 00:18:44,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:18:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 8730 transitions. [2022-01-11 00:18:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 00:18:44,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:44,967 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:44,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:18:44,968 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1760853252, now seen corresponding path program 1 times [2022-01-11 00:18:44,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:44,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626352475] [2022-01-11 00:18:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:44,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:45,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:45,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626352475] [2022-01-11 00:18:45,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626352475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:45,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:45,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:45,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820765916] [2022-01-11 00:18:45,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:45,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:45,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:45,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:45,014 INFO L87 Difference]: Start difference. First operand 5535 states and 8730 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:18:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:45,221 INFO L93 Difference]: Finished difference Result 13783 states and 21726 transitions. [2022-01-11 00:18:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:45,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-11 00:18:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:45,254 INFO L225 Difference]: With dead ends: 13783 [2022-01-11 00:18:45,254 INFO L226 Difference]: Without dead ends: 8390 [2022-01-11 00:18:45,259 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 00:18:45,260 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 113 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:45,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 448 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2022-01-11 00:18:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 8371. [2022-01-11 00:18:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 8370 states have (on average 1.5591397849462365) internal successors, (13050), 8370 states have internal predecessors, (13050), 0 states have call successors, (0), 0 states 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 00:18:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 13050 transitions. [2022-01-11 00:18:45,502 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 13050 transitions. Word has length 47 [2022-01-11 00:18:45,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:45,502 INFO L470 AbstractCegarLoop]: Abstraction has 8371 states and 13050 transitions. [2022-01-11 00:18:45,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:18:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 13050 transitions. [2022-01-11 00:18:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 00:18:45,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:45,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:45,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:18:45,509 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1636780005, now seen corresponding path program 1 times [2022-01-11 00:18:45,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:45,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302912474] [2022-01-11 00:18:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:45,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:45,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:45,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302912474] [2022-01-11 00:18:45,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302912474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:45,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:45,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:45,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481067884] [2022-01-11 00:18:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:45,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:45,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:45,548 INFO L87 Difference]: Start difference. First operand 8371 states and 13050 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:18:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:45,810 INFO L93 Difference]: Finished difference Result 21358 states and 33440 transitions. [2022-01-11 00:18:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:45,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-11 00:18:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:45,843 INFO L225 Difference]: With dead ends: 21358 [2022-01-11 00:18:45,844 INFO L226 Difference]: Without dead ends: 13262 [2022-01-11 00:18:45,858 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 00:18:45,859 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 117 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:45,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 431 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13262 states. [2022-01-11 00:18:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13262 to 13209. [2022-01-11 00:18:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13209 states, 13208 states have (on average 1.5523167777104785) internal successors, (20503), 13208 states have internal predecessors, (20503), 0 states have call successors, (0), 0 states 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 00:18:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13209 states to 13209 states and 20503 transitions. [2022-01-11 00:18:46,275 INFO L78 Accepts]: Start accepts. Automaton has 13209 states and 20503 transitions. Word has length 47 [2022-01-11 00:18:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:46,276 INFO L470 AbstractCegarLoop]: Abstraction has 13209 states and 20503 transitions. [2022-01-11 00:18:46,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:18:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13209 states and 20503 transitions. [2022-01-11 00:18:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 00:18:46,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:46,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:46,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:18:46,288 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 722527004, now seen corresponding path program 1 times [2022-01-11 00:18:46,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:46,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196955424] [2022-01-11 00:18:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:46,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 00:18:46,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196955424] [2022-01-11 00:18:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196955424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:46,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896177901] [2022-01-11 00:18:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:46,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:46,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:46,311 INFO L87 Difference]: Start difference. First operand 13209 states and 20503 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 00:18:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:46,688 INFO L93 Difference]: Finished difference Result 25958 states and 40395 transitions. [2022-01-11 00:18:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:46,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 47 [2022-01-11 00:18:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:46,714 INFO L225 Difference]: With dead ends: 25958 [2022-01-11 00:18:46,715 INFO L226 Difference]: Without dead ends: 12975 [2022-01-11 00:18:46,731 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 00:18:46,732 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 198 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:46,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 203 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12975 states. [2022-01-11 00:18:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12975 to 12975. [2022-01-11 00:18:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.5561122244488979) internal successors, (20189), 12974 states have internal predecessors, (20189), 0 states have call successors, (0), 0 states 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 00:18:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 20189 transitions. [2022-01-11 00:18:47,175 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 20189 transitions. Word has length 47 [2022-01-11 00:18:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:47,175 INFO L470 AbstractCegarLoop]: Abstraction has 12975 states and 20189 transitions. [2022-01-11 00:18:47,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 00:18:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 20189 transitions. [2022-01-11 00:18:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 00:18:47,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:47,183 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:47,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:18:47,183 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:47,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash -277505703, now seen corresponding path program 1 times [2022-01-11 00:18:47,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:47,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122028469] [2022-01-11 00:18:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:47,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:47,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:47,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122028469] [2022-01-11 00:18:47,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122028469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:47,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:47,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:47,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333811447] [2022-01-11 00:18:47,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:47,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:47,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:47,213 INFO L87 Difference]: Start difference. First operand 12975 states and 20189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 00:18:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:47,735 INFO L93 Difference]: Finished difference Result 36772 states and 57121 transitions. [2022-01-11 00:18:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-11 00:18:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:47,777 INFO L225 Difference]: With dead ends: 36772 [2022-01-11 00:18:47,777 INFO L226 Difference]: Without dead ends: 20499 [2022-01-11 00:18:47,792 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 00:18:47,793 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 157 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:47,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 542 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20499 states. [2022-01-11 00:18:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20499 to 20499. [2022-01-11 00:18:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20499 states, 20498 states have (on average 1.5355156600643964) internal successors, (31475), 20498 states have internal predecessors, (31475), 0 states have call successors, (0), 0 states 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 00:18:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20499 states to 20499 states and 31475 transitions. [2022-01-11 00:18:48,377 INFO L78 Accepts]: Start accepts. Automaton has 20499 states and 31475 transitions. Word has length 48 [2022-01-11 00:18:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:48,377 INFO L470 AbstractCegarLoop]: Abstraction has 20499 states and 31475 transitions. [2022-01-11 00:18:48,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 00:18:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20499 states and 31475 transitions. [2022-01-11 00:18:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:18:48,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:48,387 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:48,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:18:48,387 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 617746088, now seen corresponding path program 1 times [2022-01-11 00:18:48,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:48,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302720591] [2022-01-11 00:18:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:48,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:48,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302720591] [2022-01-11 00:18:48,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302720591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:48,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:48,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:48,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802271442] [2022-01-11 00:18:48,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:48,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:48,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:48,420 INFO L87 Difference]: Start difference. First operand 20499 states and 31475 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 00:18:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:49,119 INFO L93 Difference]: Finished difference Result 52309 states and 80315 transitions. [2022-01-11 00:18:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-11 00:18:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:49,194 INFO L225 Difference]: With dead ends: 52309 [2022-01-11 00:18:49,194 INFO L226 Difference]: Without dead ends: 32043 [2022-01-11 00:18:49,223 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 00:18:49,223 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 140 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:49,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 382 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32043 states. [2022-01-11 00:18:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32043 to 31724. [2022-01-11 00:18:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31724 states, 31723 states have (on average 1.517889228635375) internal successors, (48152), 31723 states have internal predecessors, (48152), 0 states have call successors, (0), 0 states 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 00:18:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31724 states to 31724 states and 48152 transitions. [2022-01-11 00:18:50,264 INFO L78 Accepts]: Start accepts. Automaton has 31724 states and 48152 transitions. Word has length 53 [2022-01-11 00:18:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:50,264 INFO L470 AbstractCegarLoop]: Abstraction has 31724 states and 48152 transitions. [2022-01-11 00:18:50,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 00:18:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 31724 states and 48152 transitions. [2022-01-11 00:18:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 00:18:50,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:50,277 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:50,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:18:50,278 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1956364660, now seen corresponding path program 1 times [2022-01-11 00:18:50,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:50,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714538882] [2022-01-11 00:18:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:50,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 00:18:50,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:50,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714538882] [2022-01-11 00:18:50,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714538882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:50,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:50,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:50,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623734553] [2022-01-11 00:18:50,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:50,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:50,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:50,296 INFO L87 Difference]: Start difference. First operand 31724 states and 48152 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 00:18:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:51,533 INFO L93 Difference]: Finished difference Result 93884 states and 142571 transitions. [2022-01-11 00:18:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:51,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 55 [2022-01-11 00:18:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:51,654 INFO L225 Difference]: With dead ends: 93884 [2022-01-11 00:18:51,654 INFO L226 Difference]: Without dead ends: 62163 [2022-01-11 00:18:51,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:51,690 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 183 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:51,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 342 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62163 states. [2022-01-11 00:18:53,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62163 to 61745. [2022-01-11 00:18:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61745 states, 61744 states have (on average 1.5208117387924334) internal successors, (93901), 61744 states have internal predecessors, (93901), 0 states have call successors, (0), 0 states 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 00:18:53,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61745 states to 61745 states and 93901 transitions. [2022-01-11 00:18:53,444 INFO L78 Accepts]: Start accepts. Automaton has 61745 states and 93901 transitions. Word has length 55 [2022-01-11 00:18:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:53,444 INFO L470 AbstractCegarLoop]: Abstraction has 61745 states and 93901 transitions. [2022-01-11 00:18:53,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 00:18:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 61745 states and 93901 transitions. [2022-01-11 00:18:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:18:53,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:53,456 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:53,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:18:53,457 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -257368935, now seen corresponding path program 1 times [2022-01-11 00:18:53,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:53,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048517152] [2022-01-11 00:18:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:53,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:53,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:53,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048517152] [2022-01-11 00:18:53,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048517152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:53,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:53,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:53,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925757706] [2022-01-11 00:18:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:53,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:53,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:53,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:53,480 INFO L87 Difference]: Start difference. First operand 61745 states and 93901 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:55,012 INFO L93 Difference]: Finished difference Result 121155 states and 185110 transitions. [2022-01-11 00:18:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:55,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:18:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:55,115 INFO L225 Difference]: With dead ends: 121155 [2022-01-11 00:18:55,115 INFO L226 Difference]: Without dead ends: 59507 [2022-01-11 00:18:55,146 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 00:18:55,146 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 136 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:55,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 322 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59507 states. [2022-01-11 00:18:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59507 to 45808. [2022-01-11 00:18:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45808 states, 45807 states have (on average 1.490208920034056) internal successors, (68262), 45807 states have internal predecessors, (68262), 0 states have call successors, (0), 0 states 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 00:18:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45808 states to 45808 states and 68262 transitions. [2022-01-11 00:18:56,592 INFO L78 Accepts]: Start accepts. Automaton has 45808 states and 68262 transitions. Word has length 80 [2022-01-11 00:18:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:56,593 INFO L470 AbstractCegarLoop]: Abstraction has 45808 states and 68262 transitions. [2022-01-11 00:18:56,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45808 states and 68262 transitions. [2022-01-11 00:18:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 00:18:56,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:56,603 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:56,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:18:56,604 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1657733050, now seen corresponding path program 1 times [2022-01-11 00:18:56,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226452672] [2022-01-11 00:18:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:56,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:18:56,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:56,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226452672] [2022-01-11 00:18:56,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226452672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:56,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:56,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:56,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754658625] [2022-01-11 00:18:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:56,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:56,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:56,631 INFO L87 Difference]: Start difference. First operand 45808 states and 68262 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:58,145 INFO L93 Difference]: Finished difference Result 98432 states and 146735 transitions. [2022-01-11 00:18:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 00:18:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:58,248 INFO L225 Difference]: With dead ends: 98432 [2022-01-11 00:18:58,248 INFO L226 Difference]: Without dead ends: 53184 [2022-01-11 00:18:58,283 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 00:18:58,284 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 129 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:58,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 309 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53184 states. [2022-01-11 00:18:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53184 to 51924. [2022-01-11 00:18:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51924 states, 51923 states have (on average 1.4780733008493345) internal successors, (76746), 51923 states have internal predecessors, (76746), 0 states have call successors, (0), 0 states 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 00:18:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51924 states to 51924 states and 76746 transitions. [2022-01-11 00:18:59,806 INFO L78 Accepts]: Start accepts. Automaton has 51924 states and 76746 transitions. Word has length 81 [2022-01-11 00:18:59,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:59,807 INFO L470 AbstractCegarLoop]: Abstraction has 51924 states and 76746 transitions. [2022-01-11 00:18:59,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 51924 states and 76746 transitions. [2022-01-11 00:18:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 00:18:59,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:59,855 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:59,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:18:59,862 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash -939027012, now seen corresponding path program 1 times [2022-01-11 00:18:59,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:59,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620012173] [2022-01-11 00:18:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:59,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 00:18:59,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:59,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620012173] [2022-01-11 00:18:59,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620012173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:59,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:59,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:59,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008092035] [2022-01-11 00:18:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:59,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:59,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:59,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:59,928 INFO L87 Difference]: Start difference. First operand 51924 states and 76746 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:19:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:01,231 INFO L93 Difference]: Finished difference Result 103371 states and 152828 transitions. [2022-01-11 00:19:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:01,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 108 [2022-01-11 00:19:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:01,329 INFO L225 Difference]: With dead ends: 103371 [2022-01-11 00:19:01,330 INFO L226 Difference]: Without dead ends: 51874 [2022-01-11 00:19:01,370 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 00:19:01,371 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 46 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:01,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 329 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51874 states. [2022-01-11 00:19:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51874 to 51874. [2022-01-11 00:19:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51874 states, 51873 states have (on average 1.477685886684788) internal successors, (76652), 51873 states have internal predecessors, (76652), 0 states have call successors, (0), 0 states 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 00:19:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51874 states to 51874 states and 76652 transitions. [2022-01-11 00:19:02,821 INFO L78 Accepts]: Start accepts. Automaton has 51874 states and 76652 transitions. Word has length 108 [2022-01-11 00:19:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:02,821 INFO L470 AbstractCegarLoop]: Abstraction has 51874 states and 76652 transitions. [2022-01-11 00:19:02,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:19:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 51874 states and 76652 transitions. [2022-01-11 00:19:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-11 00:19:02,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:02,869 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:02,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:19:02,869 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1379677543, now seen corresponding path program 1 times [2022-01-11 00:19:02,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:02,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831024180] [2022-01-11 00:19:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:02,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-11 00:19:02,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:02,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831024180] [2022-01-11 00:19:02,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831024180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:02,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:02,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:02,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079476005] [2022-01-11 00:19:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:02,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:02,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:02,900 INFO L87 Difference]: Start difference. First operand 51874 states and 76652 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 00:19:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:04,261 INFO L93 Difference]: Finished difference Result 89775 states and 132774 transitions. [2022-01-11 00:19:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:04,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-11 00:19:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:04,330 INFO L225 Difference]: With dead ends: 89775 [2022-01-11 00:19:04,331 INFO L226 Difference]: Without dead ends: 37996 [2022-01-11 00:19:04,371 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 00:19:04,373 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 91 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:04,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 328 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37996 states. [2022-01-11 00:19:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37996 to 37996. [2022-01-11 00:19:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37996 states, 37995 states have (on average 1.4330833004342676) internal successors, (54450), 37995 states have internal predecessors, (54450), 0 states have call successors, (0), 0 states 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 00:19:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37996 states to 37996 states and 54450 transitions. [2022-01-11 00:19:05,556 INFO L78 Accepts]: Start accepts. Automaton has 37996 states and 54450 transitions. Word has length 120 [2022-01-11 00:19:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:05,556 INFO L470 AbstractCegarLoop]: Abstraction has 37996 states and 54450 transitions. [2022-01-11 00:19:05,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 00:19:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 37996 states and 54450 transitions. [2022-01-11 00:19:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-11 00:19:05,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:05,595 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:05,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:19:05,595 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1510088880, now seen corresponding path program 1 times [2022-01-11 00:19:05,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:05,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72998536] [2022-01-11 00:19:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:05,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 00:19:05,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:05,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72998536] [2022-01-11 00:19:05,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72998536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:05,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:05,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:05,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588405371] [2022-01-11 00:19:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:05,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:05,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:05,628 INFO L87 Difference]: Start difference. First operand 37996 states and 54450 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 00:19:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:06,364 INFO L93 Difference]: Finished difference Result 66480 states and 95358 transitions. [2022-01-11 00:19:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-11 00:19:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:06,408 INFO L225 Difference]: With dead ends: 66480 [2022-01-11 00:19:06,409 INFO L226 Difference]: Without dead ends: 29057 [2022-01-11 00:19:06,443 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 00:19:06,443 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 127 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:06,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 364 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29057 states. [2022-01-11 00:19:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29057 to 28706. [2022-01-11 00:19:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28706 states, 28705 states have (on average 1.4168960111478837) internal successors, (40672), 28705 states have internal predecessors, (40672), 0 states have call successors, (0), 0 states 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 00:19:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28706 states to 28706 states and 40672 transitions. [2022-01-11 00:19:07,202 INFO L78 Accepts]: Start accepts. Automaton has 28706 states and 40672 transitions. Word has length 121 [2022-01-11 00:19:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:07,202 INFO L470 AbstractCegarLoop]: Abstraction has 28706 states and 40672 transitions. [2022-01-11 00:19:07,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 00:19:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28706 states and 40672 transitions. [2022-01-11 00:19:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 00:19:07,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:07,325 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:07,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:19:07,326 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -391601191, now seen corresponding path program 1 times [2022-01-11 00:19:07,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679454240] [2022-01-11 00:19:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:07,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 00:19:07,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679454240] [2022-01-11 00:19:07,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679454240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:07,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:07,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:07,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963350291] [2022-01-11 00:19:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:07,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:07,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:07,354 INFO L87 Difference]: Start difference. First operand 28706 states and 40672 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:07,881 INFO L93 Difference]: Finished difference Result 45233 states and 64357 transitions. [2022-01-11 00:19:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 00:19:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:07,908 INFO L225 Difference]: With dead ends: 45233 [2022-01-11 00:19:07,908 INFO L226 Difference]: Without dead ends: 22784 [2022-01-11 00:19:07,925 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 00:19:07,926 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 158 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:07,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 178 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22784 states. [2022-01-11 00:19:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22784 to 22784. [2022-01-11 00:19:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22784 states, 22783 states have (on average 1.3998595443971382) internal successors, (31893), 22783 states have internal predecessors, (31893), 0 states have call successors, (0), 0 states 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 00:19:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22784 states to 22784 states and 31893 transitions. [2022-01-11 00:19:08,600 INFO L78 Accepts]: Start accepts. Automaton has 22784 states and 31893 transitions. Word has length 128 [2022-01-11 00:19:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:08,601 INFO L470 AbstractCegarLoop]: Abstraction has 22784 states and 31893 transitions. [2022-01-11 00:19:08,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 22784 states and 31893 transitions. [2022-01-11 00:19:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 00:19:08,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:08,615 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:08,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:19:08,615 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1312508443, now seen corresponding path program 1 times [2022-01-11 00:19:08,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325197065] [2022-01-11 00:19:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:08,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-11 00:19:08,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:08,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325197065] [2022-01-11 00:19:08,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325197065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:08,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:08,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:08,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624587088] [2022-01-11 00:19:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:08,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:08,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:08,650 INFO L87 Difference]: Start difference. First operand 22784 states and 31893 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 00:19:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:09,211 INFO L93 Difference]: Finished difference Result 39273 states and 55111 transitions. [2022-01-11 00:19:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 128 [2022-01-11 00:19:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:09,241 INFO L225 Difference]: With dead ends: 39273 [2022-01-11 00:19:09,242 INFO L226 Difference]: Without dead ends: 22784 [2022-01-11 00:19:09,253 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 00:19:09,254 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 109 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:09,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 172 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22784 states. [2022-01-11 00:19:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22784 to 22784. [2022-01-11 00:19:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22784 states, 22783 states have (on average 1.39722600184348) internal successors, (31833), 22783 states have internal predecessors, (31833), 0 states have call successors, (0), 0 states 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 00:19:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22784 states to 22784 states and 31833 transitions. [2022-01-11 00:19:09,916 INFO L78 Accepts]: Start accepts. Automaton has 22784 states and 31833 transitions. Word has length 128 [2022-01-11 00:19:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:09,916 INFO L470 AbstractCegarLoop]: Abstraction has 22784 states and 31833 transitions. [2022-01-11 00:19:09,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 00:19:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 22784 states and 31833 transitions. [2022-01-11 00:19:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 00:19:09,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:09,931 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:09,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:19:09,931 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2005610140, now seen corresponding path program 1 times [2022-01-11 00:19:09,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:09,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592994237] [2022-01-11 00:19:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:09,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 00:19:09,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:09,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592994237] [2022-01-11 00:19:09,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592994237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:09,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:09,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:09,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277974365] [2022-01-11 00:19:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:09,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:09,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:09,964 INFO L87 Difference]: Start difference. First operand 22784 states and 31833 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 00:19:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:10,510 INFO L93 Difference]: Finished difference Result 36629 states and 50935 transitions. [2022-01-11 00:19:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 128 [2022-01-11 00:19:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:10,536 INFO L225 Difference]: With dead ends: 36629 [2022-01-11 00:19:10,536 INFO L226 Difference]: Without dead ends: 20140 [2022-01-11 00:19:10,550 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 00:19:10,551 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 106 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:10,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20140 states. [2022-01-11 00:19:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20140 to 14530. [2022-01-11 00:19:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14530 states, 14529 states have (on average 1.3685731984307248) internal successors, (19884), 14529 states have internal predecessors, (19884), 0 states have call successors, (0), 0 states 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 00:19:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14530 states to 14530 states and 19884 transitions. [2022-01-11 00:19:11,103 INFO L78 Accepts]: Start accepts. Automaton has 14530 states and 19884 transitions. Word has length 128 [2022-01-11 00:19:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:11,103 INFO L470 AbstractCegarLoop]: Abstraction has 14530 states and 19884 transitions. [2022-01-11 00:19:11,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 00:19:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14530 states and 19884 transitions. [2022-01-11 00:19:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-11 00:19:11,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:11,116 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:11,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:19:11,116 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash -339406365, now seen corresponding path program 1 times [2022-01-11 00:19:11,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:11,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616378672] [2022-01-11 00:19:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:11,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-11 00:19:11,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:11,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616378672] [2022-01-11 00:19:11,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616378672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:11,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:11,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:11,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412235974] [2022-01-11 00:19:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:11,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:11,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:11,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:11,143 INFO L87 Difference]: Start difference. First operand 14530 states and 19884 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:11,514 INFO L93 Difference]: Finished difference Result 26721 states and 36523 transitions. [2022-01-11 00:19:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:11,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-01-11 00:19:11,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:11,530 INFO L225 Difference]: With dead ends: 26721 [2022-01-11 00:19:11,531 INFO L226 Difference]: Without dead ends: 12286 [2022-01-11 00:19:11,544 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 00:19:11,544 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 155 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:11,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 311 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-01-11 00:19:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 12248. [2022-01-11 00:19:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12248 states, 12247 states have (on average 1.3304482730464604) internal successors, (16294), 12247 states have internal predecessors, (16294), 0 states have call successors, (0), 0 states 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 00:19:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12248 states to 12248 states and 16294 transitions. [2022-01-11 00:19:11,967 INFO L78 Accepts]: Start accepts. Automaton has 12248 states and 16294 transitions. Word has length 131 [2022-01-11 00:19:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:11,967 INFO L470 AbstractCegarLoop]: Abstraction has 12248 states and 16294 transitions. [2022-01-11 00:19:11,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12248 states and 16294 transitions. [2022-01-11 00:19:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-11 00:19:11,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:11,977 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:11,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:19:11,978 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1634063115, now seen corresponding path program 1 times [2022-01-11 00:19:11,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:11,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667347957] [2022-01-11 00:19:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:11,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 00:19:12,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:12,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667347957] [2022-01-11 00:19:12,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667347957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:12,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:12,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:12,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957864460] [2022-01-11 00:19:12,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:12,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:12,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:12,010 INFO L87 Difference]: Start difference. First operand 12248 states and 16294 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:12,302 INFO L93 Difference]: Finished difference Result 23205 states and 30846 transitions. [2022-01-11 00:19:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-01-11 00:19:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:12,317 INFO L225 Difference]: With dead ends: 23205 [2022-01-11 00:19:12,317 INFO L226 Difference]: Without dead ends: 10736 [2022-01-11 00:19:12,328 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 00:19:12,329 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 147 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:12,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 324 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2022-01-11 00:19:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 10573. [2022-01-11 00:19:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10573 states, 10572 states have (on average 1.3024971623155506) internal successors, (13770), 10572 states have internal predecessors, (13770), 0 states have call successors, (0), 0 states 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 00:19:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 13770 transitions. [2022-01-11 00:19:12,700 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 13770 transitions. Word has length 131 [2022-01-11 00:19:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:12,700 INFO L470 AbstractCegarLoop]: Abstraction has 10573 states and 13770 transitions. [2022-01-11 00:19:12,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 13770 transitions. [2022-01-11 00:19:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 00:19:12,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:12,707 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:12,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:19:12,707 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 157935208, now seen corresponding path program 1 times [2022-01-11 00:19:12,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198134038] [2022-01-11 00:19:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:12,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 00:19:12,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:12,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198134038] [2022-01-11 00:19:12,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198134038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:12,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:12,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:12,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508170289] [2022-01-11 00:19:12,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:12,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:12,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:12,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:12,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:12,735 INFO L87 Difference]: Start difference. First operand 10573 states and 13770 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 00:19:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:13,156 INFO L93 Difference]: Finished difference Result 26993 states and 34956 transitions. [2022-01-11 00:19:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 132 [2022-01-11 00:19:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:13,183 INFO L225 Difference]: With dead ends: 26993 [2022-01-11 00:19:13,183 INFO L226 Difference]: Without dead ends: 16467 [2022-01-11 00:19:13,195 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 00:19:13,196 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 113 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:13,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 307 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16467 states. [2022-01-11 00:19:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16467 to 16175. [2022-01-11 00:19:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16175 states, 16174 states have (on average 1.2860145913194014) internal successors, (20800), 16174 states have internal predecessors, (20800), 0 states have call successors, (0), 0 states 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 00:19:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16175 states to 16175 states and 20800 transitions. [2022-01-11 00:19:13,674 INFO L78 Accepts]: Start accepts. Automaton has 16175 states and 20800 transitions. Word has length 132 [2022-01-11 00:19:13,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:13,674 INFO L470 AbstractCegarLoop]: Abstraction has 16175 states and 20800 transitions. [2022-01-11 00:19:13,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 00:19:13,674 INFO L276 IsEmpty]: Start isEmpty. Operand 16175 states and 20800 transitions. [2022-01-11 00:19:13,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 00:19:13,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:13,683 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:13,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:19:13,684 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:13,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash 682056393, now seen corresponding path program 1 times [2022-01-11 00:19:13,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:13,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927174512] [2022-01-11 00:19:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:13,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 00:19:13,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:13,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927174512] [2022-01-11 00:19:13,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927174512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:13,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798528555] [2022-01-11 00:19:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:13,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:13,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:13,720 INFO L87 Difference]: Start difference. First operand 16175 states and 20800 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:14,263 INFO L93 Difference]: Finished difference Result 38077 states and 48903 transitions. [2022-01-11 00:19:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-11 00:19:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:14,295 INFO L225 Difference]: With dead ends: 38077 [2022-01-11 00:19:14,295 INFO L226 Difference]: Without dead ends: 21822 [2022-01-11 00:19:14,317 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 00:19:14,318 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 112 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:14,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 303 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:14,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21822 states. [2022-01-11 00:19:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21822 to 21388. [2022-01-11 00:19:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21388 states, 21387 states have (on average 1.281946977135643) internal successors, (27417), 21387 states have internal predecessors, (27417), 0 states have call successors, (0), 0 states 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 00:19:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21388 states to 21388 states and 27417 transitions. [2022-01-11 00:19:14,953 INFO L78 Accepts]: Start accepts. Automaton has 21388 states and 27417 transitions. Word has length 132 [2022-01-11 00:19:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:14,953 INFO L470 AbstractCegarLoop]: Abstraction has 21388 states and 27417 transitions. [2022-01-11 00:19:14,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 21388 states and 27417 transitions. [2022-01-11 00:19:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-11 00:19:14,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:14,966 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:14,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:19:14,966 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash -569633735, now seen corresponding path program 1 times [2022-01-11 00:19:14,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:14,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118695991] [2022-01-11 00:19:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:14,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-11 00:19:14,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:14,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118695991] [2022-01-11 00:19:14,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118695991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:14,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:14,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:14,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378453290] [2022-01-11 00:19:14,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:14,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:14,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:14,998 INFO L87 Difference]: Start difference. First operand 21388 states and 27417 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 00:19:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,555 INFO L93 Difference]: Finished difference Result 36377 states and 46859 transitions. [2022-01-11 00:19:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 172 [2022-01-11 00:19:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,583 INFO L225 Difference]: With dead ends: 36377 [2022-01-11 00:19:15,583 INFO L226 Difference]: Without dead ends: 21028 [2022-01-11 00:19:15,598 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 00:19:15,599 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 115 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:15,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 431 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21028 states. [2022-01-11 00:19:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21028 to 20698. [2022-01-11 00:19:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20698 states, 20697 states have (on average 1.2483451707977002) internal successors, (25837), 20697 states have internal predecessors, (25837), 0 states have call successors, (0), 0 states 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 00:19:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20698 states to 20698 states and 25837 transitions. [2022-01-11 00:19:16,278 INFO L78 Accepts]: Start accepts. Automaton has 20698 states and 25837 transitions. Word has length 172 [2022-01-11 00:19:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:16,278 INFO L470 AbstractCegarLoop]: Abstraction has 20698 states and 25837 transitions. [2022-01-11 00:19:16,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 00:19:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 20698 states and 25837 transitions. [2022-01-11 00:19:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-11 00:19:16,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:16,288 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:16,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 00:19:16,288 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -636027619, now seen corresponding path program 1 times [2022-01-11 00:19:16,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:16,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418287899] [2022-01-11 00:19:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:16,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-11 00:19:16,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418287899] [2022-01-11 00:19:16,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418287899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:16,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:16,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:16,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855332046] [2022-01-11 00:19:16,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:16,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:16,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:16,322 INFO L87 Difference]: Start difference. First operand 20698 states and 25837 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 00:19:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:16,846 INFO L93 Difference]: Finished difference Result 35450 states and 44513 transitions. [2022-01-11 00:19:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 172 [2022-01-11 00:19:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:16,876 INFO L225 Difference]: With dead ends: 35450 [2022-01-11 00:19:16,877 INFO L226 Difference]: Without dead ends: 20538 [2022-01-11 00:19:16,891 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 00:19:16,892 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 114 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:16,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 439 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20538 states. [2022-01-11 00:19:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20538 to 20262. [2022-01-11 00:19:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20262 states, 20261 states have (on average 1.2159814421795567) internal successors, (24637), 20261 states have internal predecessors, (24637), 0 states have call successors, (0), 0 states 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 00:19:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20262 states to 20262 states and 24637 transitions. [2022-01-11 00:19:17,737 INFO L78 Accepts]: Start accepts. Automaton has 20262 states and 24637 transitions. Word has length 172 [2022-01-11 00:19:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:17,737 INFO L470 AbstractCegarLoop]: Abstraction has 20262 states and 24637 transitions. [2022-01-11 00:19:17,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 00:19:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 20262 states and 24637 transitions. [2022-01-11 00:19:17,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-11 00:19:17,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:17,747 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:17,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 00:19:17,747 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash 585850545, now seen corresponding path program 1 times [2022-01-11 00:19:17,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120459806] [2022-01-11 00:19:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:17,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 00:19:17,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:17,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120459806] [2022-01-11 00:19:17,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120459806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:17,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:17,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:17,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77224923] [2022-01-11 00:19:17,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:17,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:17,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:17,784 INFO L87 Difference]: Start difference. First operand 20262 states and 24637 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 00:19:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:18,273 INFO L93 Difference]: Finished difference Result 34894 states and 42553 transitions. [2022-01-11 00:19:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 174 [2022-01-11 00:19:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:18,294 INFO L225 Difference]: With dead ends: 34894 [2022-01-11 00:19:18,294 INFO L226 Difference]: Without dead ends: 15418 [2022-01-11 00:19:18,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:18,307 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 130 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:18,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 162 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15418 states. [2022-01-11 00:19:18,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15418 to 14748. [2022-01-11 00:19:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14748 states, 14747 states have (on average 1.2026174815216655) internal successors, (17735), 14747 states have internal predecessors, (17735), 0 states have call successors, (0), 0 states 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 00:19:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14748 states to 14748 states and 17735 transitions. [2022-01-11 00:19:18,833 INFO L78 Accepts]: Start accepts. Automaton has 14748 states and 17735 transitions. Word has length 174 [2022-01-11 00:19:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:18,833 INFO L470 AbstractCegarLoop]: Abstraction has 14748 states and 17735 transitions. [2022-01-11 00:19:18,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 00:19:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 14748 states and 17735 transitions. [2022-01-11 00:19:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:19:18,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:18,838 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:18,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 00:19:18,838 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 79509606, now seen corresponding path program 1 times [2022-01-11 00:19:18,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:18,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583119604] [2022-01-11 00:19:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:18,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-11 00:19:18,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:18,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583119604] [2022-01-11 00:19:18,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583119604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:18,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:18,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:18,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574606762] [2022-01-11 00:19:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:18,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:18,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:18,930 INFO L87 Difference]: Start difference. First operand 14748 states and 17735 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 00:19:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:19,098 INFO L93 Difference]: Finished difference Result 18547 states and 22127 transitions. [2022-01-11 00:19:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 175 [2022-01-11 00:19:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:19,103 INFO L225 Difference]: With dead ends: 18547 [2022-01-11 00:19:19,103 INFO L226 Difference]: Without dead ends: 4148 [2022-01-11 00:19:19,111 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 00:19:19,111 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 82 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:19,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 324 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-11 00:19:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4045. [2022-01-11 00:19:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 1.1139960435212661) internal successors, (4505), 4044 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states 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 00:19:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 4505 transitions. [2022-01-11 00:19:19,229 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 4505 transitions. Word has length 175 [2022-01-11 00:19:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:19,230 INFO L470 AbstractCegarLoop]: Abstraction has 4045 states and 4505 transitions. [2022-01-11 00:19:19,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 00:19:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 4505 transitions. [2022-01-11 00:19:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 00:19:19,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:19,232 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:19,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 00:19:19,232 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1836584533, now seen corresponding path program 1 times [2022-01-11 00:19:19,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:19,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976201686] [2022-01-11 00:19:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:19,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-01-11 00:19:19,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:19,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976201686] [2022-01-11 00:19:19,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976201686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:19,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:19,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:19,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61269235] [2022-01-11 00:19:19,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:19,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:19,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:19,275 INFO L87 Difference]: Start difference. First operand 4045 states and 4505 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:19,392 INFO L93 Difference]: Finished difference Result 4047 states and 4506 transitions. [2022-01-11 00:19:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:19,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-01-11 00:19:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:19,395 INFO L225 Difference]: With dead ends: 4047 [2022-01-11 00:19:19,395 INFO L226 Difference]: Without dead ends: 2956 [2022-01-11 00:19:19,397 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 00:19:19,397 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:19,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 155 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-01-11 00:19:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2956. [2022-01-11 00:19:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2955 states have (on average 1.1147208121827412) internal successors, (3294), 2955 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states 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 00:19:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 3294 transitions. [2022-01-11 00:19:19,489 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 3294 transitions. Word has length 176 [2022-01-11 00:19:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:19,489 INFO L470 AbstractCegarLoop]: Abstraction has 2956 states and 3294 transitions. [2022-01-11 00:19:19,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 3294 transitions. [2022-01-11 00:19:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 00:19:19,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:19,490 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:19,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 00:19:19,491 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1597528421, now seen corresponding path program 1 times [2022-01-11 00:19:19,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:19,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363329295] [2022-01-11 00:19:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:19,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-01-11 00:19:19,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363329295] [2022-01-11 00:19:19,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363329295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:19,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:19,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:19:19,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766833440] [2022-01-11 00:19:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:19,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:19:19,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:19:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:19:19,548 INFO L87 Difference]: Start difference. First operand 2956 states and 3294 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:19,625 INFO L93 Difference]: Finished difference Result 2958 states and 3295 transitions. [2022-01-11 00:19:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:19:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-01-11 00:19:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:19,627 INFO L225 Difference]: With dead ends: 2958 [2022-01-11 00:19:19,627 INFO L226 Difference]: Without dead ends: 1858 [2022-01-11 00:19:19,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:19:19,629 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 150 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:19,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 300 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-01-11 00:19:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1858. [2022-01-11 00:19:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.116855142703285) internal successors, (2074), 1857 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states 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 00:19:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2074 transitions. [2022-01-11 00:19:19,697 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2074 transitions. Word has length 176 [2022-01-11 00:19:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:19,697 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 2074 transitions. [2022-01-11 00:19:19,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2074 transitions. [2022-01-11 00:19:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-11 00:19:19,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:19,698 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:19,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 00:19:19,698 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1926344367, now seen corresponding path program 1 times [2022-01-11 00:19:19,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:19,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429671697] [2022-01-11 00:19:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:19,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-11 00:19:19,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429671697] [2022-01-11 00:19:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429671697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:19,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:19,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877253005] [2022-01-11 00:19:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:19,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:19,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:19,743 INFO L87 Difference]: Start difference. First operand 1858 states and 2074 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 00:19:19,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:19,806 INFO L93 Difference]: Finished difference Result 3168 states and 3544 transitions. [2022-01-11 00:19:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:19,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 191 [2022-01-11 00:19:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:19,808 INFO L225 Difference]: With dead ends: 3168 [2022-01-11 00:19:19,808 INFO L226 Difference]: Without dead ends: 1664 [2022-01-11 00:19:19,809 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 00:19:19,809 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 95 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:19,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-01-11 00:19:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1504. [2022-01-11 00:19:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 1.104457751164338) internal successors, (1660), 1503 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 00:19:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1660 transitions. [2022-01-11 00:19:19,869 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1660 transitions. Word has length 191 [2022-01-11 00:19:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:19,869 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 1660 transitions. [2022-01-11 00:19:19,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 00:19:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1660 transitions. [2022-01-11 00:19:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-11 00:19:19,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:19,870 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:19,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 00:19:19,870 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -84252091, now seen corresponding path program 1 times [2022-01-11 00:19:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:19,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622215866] [2022-01-11 00:19:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:19,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 00:19:20,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:20,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622215866] [2022-01-11 00:19:20,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622215866] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:19:20,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048396642] [2022-01-11 00:19:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:20,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:19:20,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:19:20,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:19:20,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:19:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:20,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 00:19:20,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:19:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 00:19:21,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:19:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 00:19:22,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048396642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:19:22,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:19:22,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2022-01-11 00:19:22,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501783458] [2022-01-11 00:19:22,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:19:22,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-11 00:19:22,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-11 00:19:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-01-11 00:19:22,147 INFO L87 Difference]: Start difference. First operand 1504 states and 1660 transitions. Second operand has 28 states, 28 states have (on average 19.892857142857142) internal successors, (557), 28 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 00:19:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:23,813 INFO L93 Difference]: Finished difference Result 5292 states and 5821 transitions. [2022-01-11 00:19:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-11 00:19:23,814 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 19.892857142857142) internal successors, (557), 28 states have internal predecessors, (557), 0 states have call successors, (0), 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 194 [2022-01-11 00:19:23,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:23,818 INFO L225 Difference]: With dead ends: 5292 [2022-01-11 00:19:23,819 INFO L226 Difference]: Without dead ends: 4142 [2022-01-11 00:19:23,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=329, Invalid=2641, Unknown=0, NotChecked=0, Total=2970 [2022-01-11 00:19:23,821 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 2022 mSDsluCounter, 5964 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 6306 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:23,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2022 Valid, 6306 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 00:19:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2022-01-11 00:19:23,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 2088. [2022-01-11 00:19:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2087 states have (on average 1.1054144705318638) internal successors, (2307), 2087 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states 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 00:19:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2307 transitions. [2022-01-11 00:19:23,941 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2307 transitions. Word has length 194 [2022-01-11 00:19:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:23,942 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2307 transitions. [2022-01-11 00:19:23,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.892857142857142) internal successors, (557), 28 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 00:19:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2307 transitions. [2022-01-11 00:19:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-11 00:19:23,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:23,943 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:23,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 00:19:24,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-11 00:19:24,160 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1606689212, now seen corresponding path program 1 times [2022-01-11 00:19:24,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:24,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857975464] [2022-01-11 00:19:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:24,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 00:19:24,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:24,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857975464] [2022-01-11 00:19:24,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857975464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:19:24,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482869160] [2022-01-11 00:19:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:24,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:19:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:19:24,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:19:24,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:19:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-11 00:19:24,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:19:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 00:19:25,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:19:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 00:19:25,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482869160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:19:25,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:19:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2022-01-11 00:19:25,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932282405] [2022-01-11 00:19:25,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:19:25,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-11 00:19:25,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-11 00:19:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-01-11 00:19:25,657 INFO L87 Difference]: Start difference. First operand 2088 states and 2307 transitions. Second operand has 25 states, 25 states have (on average 22.56) internal successors, (564), 25 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 00:19:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:26,540 INFO L93 Difference]: Finished difference Result 5224 states and 5736 transitions. [2022-01-11 00:19:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-11 00:19:26,540 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 22.56) internal successors, (564), 25 states have internal predecessors, (564), 0 states have call successors, (0), 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 200 [2022-01-11 00:19:26,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:26,543 INFO L225 Difference]: With dead ends: 5224 [2022-01-11 00:19:26,543 INFO L226 Difference]: Without dead ends: 3490 [2022-01-11 00:19:26,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=1633, Unknown=0, NotChecked=0, Total=1892 [2022-01-11 00:19:26,545 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1268 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 4772 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:26,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 4772 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:19:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2022-01-11 00:19:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 2370. [2022-01-11 00:19:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2369 states have (on average 1.1034191642043056) internal successors, (2614), 2369 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states 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 00:19:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 2614 transitions. [2022-01-11 00:19:26,679 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 2614 transitions. Word has length 200 [2022-01-11 00:19:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:26,680 INFO L470 AbstractCegarLoop]: Abstraction has 2370 states and 2614 transitions. [2022-01-11 00:19:26,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 22.56) internal successors, (564), 25 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 00:19:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 2614 transitions. [2022-01-11 00:19:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-01-11 00:19:26,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:26,682 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:26,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 00:19:26,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-11 00:19:26,896 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 128862218, now seen corresponding path program 1 times [2022-01-11 00:19:26,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:26,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716247584] [2022-01-11 00:19:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:26,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-11 00:19:26,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:26,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716247584] [2022-01-11 00:19:26,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716247584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:26,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:26,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:26,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957497056] [2022-01-11 00:19:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:26,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:26,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:26,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:26,946 INFO L87 Difference]: Start difference. First operand 2370 states and 2614 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 00:19:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:27,033 INFO L93 Difference]: Finished difference Result 3006 states and 3298 transitions. [2022-01-11 00:19:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 295 [2022-01-11 00:19:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:27,034 INFO L225 Difference]: With dead ends: 3006 [2022-01-11 00:19:27,034 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:19:27,036 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 00:19:27,036 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:27,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 295 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:19:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:19:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 00:19:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:19:27,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 295 [2022-01-11 00:19:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:27,038 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:19:27,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 00:19:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:19:27,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:19:27,040 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 00:19:27,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-11 00:19:27,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.