/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_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:24:07,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:24:07,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:24:07,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:24:07,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:24:07,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:24:07,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:24:07,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:24:07,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:24:07,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:24:07,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:24:07,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:24:07,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:24:07,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:24:07,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:24:07,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:24:07,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:24:08,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:24:08,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:24:08,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:24:08,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:24:08,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:24:08,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:24:08,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:24:08,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 19:24:08,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 19:24:08,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 19:24:08,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 19:24:08,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 19:24:08,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 19:24:08,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:24:08,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:24:08,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:24:08,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:24:08,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:24:08,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:24:08,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:24:08,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:24:08,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:24:08,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:24:08,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:24:08,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:24:08,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:24:08,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:24:08,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:24:08,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:24:08,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:24:08,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:24:08,048 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:24:08,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:24:08,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:24:08,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:24:08,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:24:08,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:24:08,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:24:08,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:24:08,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:24:08,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:24:08,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:24:08,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:24:08,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:24:08,051 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:24:08,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:24:08,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:24:08,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:24:08,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:24:08,052 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:24:08,052 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:24:08,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:24:08,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:24:08,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:24:08,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:24:08,284 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:24:08,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c [2022-01-10 19:24:08,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf362110/2aba21d21d6d4ff6aa3186c2861241de/FLAG635a095fe [2022-01-10 19:24:09,067 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:24:09,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c [2022-01-10 19:24:09,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf362110/2aba21d21d6d4ff6aa3186c2861241de/FLAG635a095fe [2022-01-10 19:24:09,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf362110/2aba21d21d6d4ff6aa3186c2861241de [2022-01-10 19:24:09,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:24:09,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:24:09,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:24:09,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:24:09,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:24:09,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:24:09" (1/1) ... [2022-01-10 19:24:09,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646620ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:09, skipping insertion in model container [2022-01-10 19:24:09,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:24:09" (1/1) ... [2022-01-10 19:24:09,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:24:09,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:24:11,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[376251,376264] [2022-01-10 19:24:11,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[383339,383352] [2022-01-10 19:24:11,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:24:11,179 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:24:11,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[376251,376264] [2022-01-10 19:24:11,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[383339,383352] [2022-01-10 19:24:11,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:24:11,827 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:24:11,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11 WrapperNode [2022-01-10 19:24:11,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:24:11,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:24:11,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:24:11,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:24:11,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:11,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,176 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 45, calls inlined = 72, statements flattened = 13148 [2022-01-10 19:24:12,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:24:12,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:24:12,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:24:12,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:24:12,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:24:12,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:24:12,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:24:12,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:24:12,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (1/1) ... [2022-01-10 19:24:12,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:24:12,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:24:12,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:24:12,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:24:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:24:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:24:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:24:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:24:12,866 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:24:12,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:24:19,432 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:24:19,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:24:19,450 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-10 19:24:19,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:24:19 BoogieIcfgContainer [2022-01-10 19:24:19,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:24:19,455 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:24:19,455 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:24:19,456 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:24:19,458 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:24:19" (1/1) ... [2022-01-10 19:24:20,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:24:20 BasicIcfg [2022-01-10 19:24:20,561 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:24:20,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:24:20,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:24:20,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:24:20,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:24:09" (1/4) ... [2022-01-10 19:24:20,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366da90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:24:20, skipping insertion in model container [2022-01-10 19:24:20,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:24:11" (2/4) ... [2022-01-10 19:24:20,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366da90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:24:20, skipping insertion in model container [2022-01-10 19:24:20,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:24:19" (3/4) ... [2022-01-10 19:24:20,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366da90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:24:20, skipping insertion in model container [2022-01-10 19:24:20,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:24:20" (4/4) ... [2022-01-10 19:24:20,566 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.03.cil-2.cTransformedIcfg [2022-01-10 19:24:20,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:24:20,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:24:20,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:24:20,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:24:20,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:24:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:20,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:20,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:20,652 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:20,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash -192499067, now seen corresponding path program 1 times [2022-01-10 19:24:20,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:20,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706685996] [2022-01-10 19:24:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:20,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:20,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706685996] [2022-01-10 19:24:20,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706685996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:20,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:20,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:20,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209036485] [2022-01-10 19:24:20,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:20,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:20,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:20,896 INFO L87 Difference]: Start difference. First operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 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 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:21,129 INFO L93 Difference]: Finished difference Result 5244 states and 9511 transitions. [2022-01-10 19:24:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:21,159 INFO L225 Difference]: With dead ends: 5244 [2022-01-10 19:24:21,159 INFO L226 Difference]: Without dead ends: 2676 [2022-01-10 19:24:21,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,173 INFO L933 BasicCegarLoop]: 4498 mSDtfsCounter, 4446 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:21,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 4888 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-01-10 19:24:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2674. [2022-01-10 19:24:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7892964071856288) internal successors, (4781), 2673 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4781 transitions. [2022-01-10 19:24:21,265 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4781 transitions. Word has length 66 [2022-01-10 19:24:21,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:21,265 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4781 transitions. [2022-01-10 19:24:21,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4781 transitions. [2022-01-10 19:24:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:21,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:21,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:21,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:24:21,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1072602789, now seen corresponding path program 1 times [2022-01-10 19:24:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:21,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760547897] [2022-01-10 19:24:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:21,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:21,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:21,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760547897] [2022-01-10 19:24:21,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760547897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:21,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:21,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:21,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641655839] [2022-01-10 19:24:21,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:21,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:21,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,317 INFO L87 Difference]: Start difference. First operand 2674 states and 4781 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:21,366 INFO L93 Difference]: Finished difference Result 3215 states and 5586 transitions. [2022-01-10 19:24:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:21,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:21,374 INFO L225 Difference]: With dead ends: 3215 [2022-01-10 19:24:21,374 INFO L226 Difference]: Without dead ends: 2674 [2022-01-10 19:24:21,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,378 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4425 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 [2022-01-10 19:24:21,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4425 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-10 19:24:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-10 19:24:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.786302395209581) internal successors, (4773), 2673 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4773 transitions. [2022-01-10 19:24:21,435 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4773 transitions. Word has length 66 [2022-01-10 19:24:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:21,435 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4773 transitions. [2022-01-10 19:24:21,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4773 transitions. [2022-01-10 19:24:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:21,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:21,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:21,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:24:21,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:21,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1721963205, now seen corresponding path program 1 times [2022-01-10 19:24:21,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:21,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910379938] [2022-01-10 19:24:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:21,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:21,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:21,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910379938] [2022-01-10 19:24:21,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910379938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:21,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:21,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:21,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630468052] [2022-01-10 19:24:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:21,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:21,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,512 INFO L87 Difference]: Start difference. First operand 2674 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:21,564 INFO L93 Difference]: Finished difference Result 3214 states and 5569 transitions. [2022-01-10 19:24:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:21,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:21,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:21,572 INFO L225 Difference]: With dead ends: 3214 [2022-01-10 19:24:21,572 INFO L226 Difference]: Without dead ends: 2674 [2022-01-10 19:24:21,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,579 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4412 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 4420 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 [2022-01-10 19:24:21,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 4420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-10 19:24:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-10 19:24:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.783308383233533) internal successors, (4765), 2673 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4765 transitions. [2022-01-10 19:24:21,631 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4765 transitions. Word has length 66 [2022-01-10 19:24:21,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:21,631 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4765 transitions. [2022-01-10 19:24:21,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4765 transitions. [2022-01-10 19:24:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:21,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:21,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:21,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:24:21,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash -612394331, now seen corresponding path program 1 times [2022-01-10 19:24:21,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:21,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809630637] [2022-01-10 19:24:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:21,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:21,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:21,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809630637] [2022-01-10 19:24:21,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809630637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:21,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:21,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:21,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062397983] [2022-01-10 19:24:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:21,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:21,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,695 INFO L87 Difference]: Start difference. First operand 2674 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:21,763 INFO L93 Difference]: Finished difference Result 3213 states and 5552 transitions. [2022-01-10 19:24:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:21,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:21,771 INFO L225 Difference]: With dead ends: 3213 [2022-01-10 19:24:21,771 INFO L226 Difference]: Without dead ends: 2674 [2022-01-10 19:24:21,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,778 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4358 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:21,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4358 Valid, 4441 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-10 19:24:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-10 19:24:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.776571856287425) internal successors, (4747), 2673 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4747 transitions. [2022-01-10 19:24:21,831 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4747 transitions. Word has length 66 [2022-01-10 19:24:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:21,832 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4747 transitions. [2022-01-10 19:24:21,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4747 transitions. [2022-01-10 19:24:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:21,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:21,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:21,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:24:21,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1083451324, now seen corresponding path program 1 times [2022-01-10 19:24:21,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536242239] [2022-01-10 19:24:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:21,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:21,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:21,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536242239] [2022-01-10 19:24:21,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536242239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:21,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:21,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:21,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455203062] [2022-01-10 19:24:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:21,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:21,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,878 INFO L87 Difference]: Start difference. First operand 2674 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:21,945 INFO L93 Difference]: Finished difference Result 3212 states and 5515 transitions. [2022-01-10 19:24:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:21,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:21,953 INFO L225 Difference]: With dead ends: 3212 [2022-01-10 19:24:21,953 INFO L226 Difference]: Without dead ends: 2674 [2022-01-10 19:24:21,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:21,954 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4347 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:21,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 4429 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-10 19:24:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-10 19:24:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7698353293413174) internal successors, (4729), 2673 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4729 transitions. [2022-01-10 19:24:22,181 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4729 transitions. Word has length 66 [2022-01-10 19:24:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:22,184 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4729 transitions. [2022-01-10 19:24:22,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4729 transitions. [2022-01-10 19:24:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:22,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:22,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:22,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:24:22,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash 40166627, now seen corresponding path program 1 times [2022-01-10 19:24:22,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:22,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006769143] [2022-01-10 19:24:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:22,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:22,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:22,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006769143] [2022-01-10 19:24:22,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006769143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:22,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:22,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:22,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582035783] [2022-01-10 19:24:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:22,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:22,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:22,250 INFO L87 Difference]: Start difference. First operand 2674 states and 4729 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:22,332 INFO L93 Difference]: Finished difference Result 3211 states and 5478 transitions. [2022-01-10 19:24:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:22,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:22,341 INFO L225 Difference]: With dead ends: 3211 [2022-01-10 19:24:22,341 INFO L226 Difference]: Without dead ends: 2674 [2022-01-10 19:24:22,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:22,344 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4336 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:22,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4336 Valid, 4417 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-10 19:24:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-10 19:24:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7630988023952097) internal successors, (4711), 2673 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4711 transitions. [2022-01-10 19:24:22,392 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4711 transitions. Word has length 66 [2022-01-10 19:24:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:22,392 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4711 transitions. [2022-01-10 19:24:22,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4711 transitions. [2022-01-10 19:24:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:22,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:22,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:22,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:24:22,393 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:22,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash 634433794, now seen corresponding path program 1 times [2022-01-10 19:24:22,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:22,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126983426] [2022-01-10 19:24:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:22,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:22,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:22,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126983426] [2022-01-10 19:24:22,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126983426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:22,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:22,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:22,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090907363] [2022-01-10 19:24:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:22,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:22,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:22,426 INFO L87 Difference]: Start difference. First operand 2674 states and 4711 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:22,484 INFO L93 Difference]: Finished difference Result 3210 states and 5441 transitions. [2022-01-10 19:24:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:22,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:22,492 INFO L225 Difference]: With dead ends: 3210 [2022-01-10 19:24:22,492 INFO L226 Difference]: Without dead ends: 2674 [2022-01-10 19:24:22,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:22,494 INFO L933 BasicCegarLoop]: 4370 mSDtfsCounter, 4325 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:22,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4325 Valid, 4405 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-10 19:24:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-10 19:24:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7563622754491017) internal successors, (4693), 2673 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4693 transitions. [2022-01-10 19:24:22,554 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4693 transitions. Word has length 66 [2022-01-10 19:24:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:22,554 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4693 transitions. [2022-01-10 19:24:22,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4693 transitions. [2022-01-10 19:24:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:22,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:22,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:22,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:24:22,559 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash 299768865, now seen corresponding path program 1 times [2022-01-10 19:24:22,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:22,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438816234] [2022-01-10 19:24:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:22,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:22,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438816234] [2022-01-10 19:24:22,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438816234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:22,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:22,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:24:22,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085850530] [2022-01-10 19:24:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:22,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:24:22,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:24:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:24:22,619 INFO L87 Difference]: Start difference. First operand 2674 states and 4693 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:22,764 INFO L93 Difference]: Finished difference Result 3548 states and 5872 transitions. [2022-01-10 19:24:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:24:22,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:22,776 INFO L225 Difference]: With dead ends: 3548 [2022-01-10 19:24:22,776 INFO L226 Difference]: Without dead ends: 3026 [2022-01-10 19:24:22,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:24:22,778 INFO L933 BasicCegarLoop]: 4399 mSDtfsCounter, 1041 mSDsluCounter, 12669 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 17068 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:22,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 17068 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-01-10 19:24:22,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2680. [2022-01-10 19:24:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7509335324869306) internal successors, (4689), 2679 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4689 transitions. [2022-01-10 19:24:22,837 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4689 transitions. Word has length 66 [2022-01-10 19:24:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:22,838 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4689 transitions. [2022-01-10 19:24:22,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4689 transitions. [2022-01-10 19:24:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:22,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:22,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:22,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:24:22,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:22,839 INFO L85 PathProgramCache]: Analyzing trace with hash 629534626, now seen corresponding path program 1 times [2022-01-10 19:24:22,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:22,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954357849] [2022-01-10 19:24:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:22,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:22,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954357849] [2022-01-10 19:24:22,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954357849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:22,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:22,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:22,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131873228] [2022-01-10 19:24:22,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:22,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:22,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:22,877 INFO L87 Difference]: Start difference. First operand 2680 states and 4689 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:22,930 INFO L93 Difference]: Finished difference Result 3228 states and 5404 transitions. [2022-01-10 19:24:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:22,948 INFO L225 Difference]: With dead ends: 3228 [2022-01-10 19:24:22,948 INFO L226 Difference]: Without dead ends: 2680 [2022-01-10 19:24:22,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:22,951 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 4326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4365 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 [2022-01-10 19:24:22,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 4365 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-10 19:24:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2022-01-10 19:24:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7479462285287528) internal successors, (4681), 2679 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4681 transitions. [2022-01-10 19:24:23,102 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4681 transitions. Word has length 66 [2022-01-10 19:24:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:23,102 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4681 transitions. [2022-01-10 19:24:23,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4681 transitions. [2022-01-10 19:24:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:24:23,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:23,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:23,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:24:23,106 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1408521663, now seen corresponding path program 1 times [2022-01-10 19:24:23,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:23,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873207722] [2022-01-10 19:24:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:23,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:23,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:23,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873207722] [2022-01-10 19:24:23,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873207722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:23,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:23,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:23,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961241786] [2022-01-10 19:24:23,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:23,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:23,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:23,144 INFO L87 Difference]: Start difference. First operand 2680 states and 4681 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:23,235 INFO L93 Difference]: Finished difference Result 3704 states and 6012 transitions. [2022-01-10 19:24:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:24:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:23,242 INFO L225 Difference]: With dead ends: 3704 [2022-01-10 19:24:23,242 INFO L226 Difference]: Without dead ends: 3164 [2022-01-10 19:24:23,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:23,244 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 4285 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 4689 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 [2022-01-10 19:24:23,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4285 Valid, 4689 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-01-10 19:24:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3104. [2022-01-10 19:24:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3102 states have (on average 1.683752417794971) internal successors, (5223), 3103 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5223 transitions. [2022-01-10 19:24:23,328 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5223 transitions. Word has length 66 [2022-01-10 19:24:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:23,329 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5223 transitions. [2022-01-10 19:24:23,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5223 transitions. [2022-01-10 19:24:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 19:24:23,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:23,330 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:23,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:24:23,331 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1749508058, now seen corresponding path program 1 times [2022-01-10 19:24:23,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:23,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255291514] [2022-01-10 19:24:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:23,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:23,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255291514] [2022-01-10 19:24:23,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255291514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:23,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:23,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:23,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90916595] [2022-01-10 19:24:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:23,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:23,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:23,387 INFO L87 Difference]: Start difference. First operand 3104 states and 5223 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) [2022-01-10 19:24:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:23,526 INFO L93 Difference]: Finished difference Result 4926 states and 7579 transitions. [2022-01-10 19:24:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:23,527 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 106 [2022-01-10 19:24:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:23,533 INFO L225 Difference]: With dead ends: 4926 [2022-01-10 19:24:23,533 INFO L226 Difference]: Without dead ends: 3968 [2022-01-10 19:24:23,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:23,536 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:23,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4686 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-01-10 19:24:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3878. [2022-01-10 19:24:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3876 states have (on average 1.6034571723426212) internal successors, (6215), 3877 states have internal predecessors, (6215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6215 transitions. [2022-01-10 19:24:23,649 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6215 transitions. Word has length 106 [2022-01-10 19:24:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:23,650 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 6215 transitions. [2022-01-10 19:24:23,651 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) [2022-01-10 19:24:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6215 transitions. [2022-01-10 19:24:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 19:24:23,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:23,652 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:23,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:24:23,652 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1917210522, now seen corresponding path program 1 times [2022-01-10 19:24:23,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:23,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186545948] [2022-01-10 19:24:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:23,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:23,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:23,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186545948] [2022-01-10 19:24:23,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186545948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:23,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:23,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:23,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608885130] [2022-01-10 19:24:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:23,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:23,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:23,696 INFO L87 Difference]: Start difference. First operand 3878 states and 6215 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) [2022-01-10 19:24:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:23,898 INFO L93 Difference]: Finished difference Result 7131 states and 10359 transitions. [2022-01-10 19:24:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:23,898 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 106 [2022-01-10 19:24:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:23,906 INFO L225 Difference]: With dead ends: 7131 [2022-01-10 19:24:23,906 INFO L226 Difference]: Without dead ends: 5427 [2022-01-10 19:24:23,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:23,910 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4216 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:23,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 4868 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2022-01-10 19:24:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5425. [2022-01-10 19:24:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5423 states have (on average 1.4993546007744791) internal successors, (8131), 5424 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 8131 transitions. [2022-01-10 19:24:24,088 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 8131 transitions. Word has length 106 [2022-01-10 19:24:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:24,088 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 8131 transitions. [2022-01-10 19:24:24,089 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) [2022-01-10 19:24:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 8131 transitions. [2022-01-10 19:24:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 19:24:24,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:24,091 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:24,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:24:24,091 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1179021509, now seen corresponding path program 1 times [2022-01-10 19:24:24,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:24,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347335625] [2022-01-10 19:24:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:24,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:24:24,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:24,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347335625] [2022-01-10 19:24:24,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347335625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:24,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:24,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:24,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583618698] [2022-01-10 19:24:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:24,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:24,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:24,124 INFO L87 Difference]: Start difference. First operand 5425 states and 8131 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:24,303 INFO L93 Difference]: Finished difference Result 8629 states and 12188 transitions. [2022-01-10 19:24:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:24,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 106 [2022-01-10 19:24:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:24,314 INFO L225 Difference]: With dead ends: 8629 [2022-01-10 19:24:24,314 INFO L226 Difference]: Without dead ends: 5378 [2022-01-10 19:24:24,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:24,321 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 402 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 8322 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 [2022-01-10 19:24:24,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 8322 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-01-10 19:24:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2022-01-10 19:24:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5376 states have (on average 1.5022321428571428) internal successors, (8076), 5377 states have internal predecessors, (8076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8076 transitions. [2022-01-10 19:24:24,489 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8076 transitions. Word has length 106 [2022-01-10 19:24:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:24,489 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8076 transitions. [2022-01-10 19:24:24,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8076 transitions. [2022-01-10 19:24:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 19:24:24,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:24,492 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:24,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:24:24,492 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1232421230, now seen corresponding path program 1 times [2022-01-10 19:24:24,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:24,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852263887] [2022-01-10 19:24:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:24,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:24,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:24,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852263887] [2022-01-10 19:24:24,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852263887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:24,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:24,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:24,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798165888] [2022-01-10 19:24:24,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:24,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:24,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:24,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:24,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:24,532 INFO L87 Difference]: Start difference. First operand 5378 states and 8076 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:24,835 INFO L93 Difference]: Finished difference Result 11424 states and 15698 transitions. [2022-01-10 19:24:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:24,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 19:24:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:24,850 INFO L225 Difference]: With dead ends: 11424 [2022-01-10 19:24:24,850 INFO L226 Difference]: Without dead ends: 8220 [2022-01-10 19:24:24,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:24,857 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4301 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:24,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4839 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2022-01-10 19:24:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 8042. [2022-01-10 19:24:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8040 states have (on average 1.4149253731343283) internal successors, (11376), 8041 states have internal predecessors, (11376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 11376 transitions. [2022-01-10 19:24:25,148 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 11376 transitions. Word has length 107 [2022-01-10 19:24:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:25,149 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 11376 transitions. [2022-01-10 19:24:25,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 11376 transitions. [2022-01-10 19:24:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 19:24:25,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:25,152 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:25,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:24:25,152 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -214202641, now seen corresponding path program 1 times [2022-01-10 19:24:25,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:25,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127584752] [2022-01-10 19:24:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:25,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:24:25,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127584752] [2022-01-10 19:24:25,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127584752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:25,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:25,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:25,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343266929] [2022-01-10 19:24:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:25,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:25,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:25,175 INFO L87 Difference]: Start difference. First operand 8042 states and 11376 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) [2022-01-10 19:24:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:25,491 INFO L93 Difference]: Finished difference Result 13881 states and 18700 transitions. [2022-01-10 19:24:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:25,492 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 107 [2022-01-10 19:24:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:25,505 INFO L225 Difference]: With dead ends: 13881 [2022-01-10 19:24:25,505 INFO L226 Difference]: Without dead ends: 7996 [2022-01-10 19:24:25,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:25,513 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 400 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 8321 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 [2022-01-10 19:24:25,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 8321 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-01-10 19:24:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2022-01-10 19:24:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 7994 states have (on average 1.416437327995997) internal successors, (11323), 7995 states have internal predecessors, (11323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11323 transitions. [2022-01-10 19:24:25,799 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11323 transitions. Word has length 107 [2022-01-10 19:24:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:25,799 INFO L470 AbstractCegarLoop]: Abstraction has 7996 states and 11323 transitions. [2022-01-10 19:24:25,799 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) [2022-01-10 19:24:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11323 transitions. [2022-01-10 19:24:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 19:24:25,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:25,803 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:25,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:24:25,803 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1030341816, now seen corresponding path program 1 times [2022-01-10 19:24:25,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:25,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060207431] [2022-01-10 19:24:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:25,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060207431] [2022-01-10 19:24:25,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060207431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:25,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:25,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:25,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473201725] [2022-01-10 19:24:25,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:25,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:25,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:25,845 INFO L87 Difference]: Start difference. First operand 7996 states and 11323 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:26,290 INFO L93 Difference]: Finished difference Result 18693 states and 24687 transitions. [2022-01-10 19:24:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2022-01-10 19:24:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:26,312 INFO L225 Difference]: With dead ends: 18693 [2022-01-10 19:24:26,312 INFO L226 Difference]: Without dead ends: 12871 [2022-01-10 19:24:26,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:26,324 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4300 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:26,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 4801 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2022-01-10 19:24:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 12741. [2022-01-10 19:24:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12741 states, 12739 states have (on average 1.3499489755867808) internal successors, (17197), 12740 states have internal predecessors, (17197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12741 states to 12741 states and 17197 transitions. [2022-01-10 19:24:26,932 INFO L78 Accepts]: Start accepts. Automaton has 12741 states and 17197 transitions. Word has length 108 [2022-01-10 19:24:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:26,933 INFO L470 AbstractCegarLoop]: Abstraction has 12741 states and 17197 transitions. [2022-01-10 19:24:26,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 12741 states and 17197 transitions. [2022-01-10 19:24:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 19:24:26,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:26,937 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:26,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:24:26,937 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -565119399, now seen corresponding path program 1 times [2022-01-10 19:24:26,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859001558] [2022-01-10 19:24:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:26,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:24:26,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:26,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859001558] [2022-01-10 19:24:26,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859001558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:26,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:26,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:26,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583034568] [2022-01-10 19:24:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:26,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:26,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:26,962 INFO L87 Difference]: Start difference. First operand 12741 states and 17197 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:27,559 INFO L93 Difference]: Finished difference Result 23273 states and 30336 transitions. [2022-01-10 19:24:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:27,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 [2022-01-10 19:24:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:27,601 INFO L225 Difference]: With dead ends: 23273 [2022-01-10 19:24:27,601 INFO L226 Difference]: Without dead ends: 12696 [2022-01-10 19:24:27,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:27,617 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 398 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 8320 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 [2022-01-10 19:24:27,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 8320 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-01-10 19:24:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12696. [2022-01-10 19:24:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12694 states have (on average 1.3507168741137545) internal successors, (17146), 12695 states have internal predecessors, (17146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 17146 transitions. [2022-01-10 19:24:28,146 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 17146 transitions. Word has length 108 [2022-01-10 19:24:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:28,146 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 17146 transitions. [2022-01-10 19:24:28,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 17146 transitions. [2022-01-10 19:24:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 19:24:28,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:28,152 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 19:24:28,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:24:28,152 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1529338429, now seen corresponding path program 1 times [2022-01-10 19:24:28,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:28,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713017168] [2022-01-10 19:24:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:28,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:28,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:28,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713017168] [2022-01-10 19:24:28,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713017168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:28,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:28,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:28,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720172962] [2022-01-10 19:24:28,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:28,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:28,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:28,198 INFO L87 Difference]: Start difference. First operand 12696 states and 17146 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:29,153 INFO L93 Difference]: Finished difference Result 32442 states and 41712 transitions. [2022-01-10 19:24:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:29,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 19:24:29,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:29,200 INFO L225 Difference]: With dead ends: 32442 [2022-01-10 19:24:29,200 INFO L226 Difference]: Without dead ends: 21920 [2022-01-10 19:24:29,223 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 [2022-01-10 19:24:29,224 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 331 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 9037 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:29,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 9037 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21920 states. [2022-01-10 19:24:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21920 to 21920. [2022-01-10 19:24:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21920 states, 21918 states have (on average 1.2924080664294186) internal successors, (28327), 21919 states have internal predecessors, (28327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21920 states to 21920 states and 28327 transitions. [2022-01-10 19:24:30,296 INFO L78 Accepts]: Start accepts. Automaton has 21920 states and 28327 transitions. Word has length 109 [2022-01-10 19:24:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:30,296 INFO L470 AbstractCegarLoop]: Abstraction has 21920 states and 28327 transitions. [2022-01-10 19:24:30,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 21920 states and 28327 transitions. [2022-01-10 19:24:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 19:24:30,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:30,310 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:30,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:24:30,310 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2145762161, now seen corresponding path program 1 times [2022-01-10 19:24:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:30,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010570911] [2022-01-10 19:24:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:30,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:30,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010570911] [2022-01-10 19:24:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010570911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:30,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:30,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:30,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151377354] [2022-01-10 19:24:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:30,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:30,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:30,355 INFO L87 Difference]: Start difference. First operand 21920 states and 28327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:31,324 INFO L93 Difference]: Finished difference Result 50438 states and 63377 transitions. [2022-01-10 19:24:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-10 19:24:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:31,381 INFO L225 Difference]: With dead ends: 50438 [2022-01-10 19:24:31,382 INFO L226 Difference]: Without dead ends: 30696 [2022-01-10 19:24:31,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:31,409 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4202 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:31,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4683 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30696 states. [2022-01-10 19:24:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30696 to 30566. [2022-01-10 19:24:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30566 states, 30564 states have (on average 1.2666862976050255) internal successors, (38715), 30565 states have internal predecessors, (38715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30566 states to 30566 states and 38715 transitions. [2022-01-10 19:24:32,526 INFO L78 Accepts]: Start accepts. Automaton has 30566 states and 38715 transitions. Word has length 140 [2022-01-10 19:24:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:32,527 INFO L470 AbstractCegarLoop]: Abstraction has 30566 states and 38715 transitions. [2022-01-10 19:24:32,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:32,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30566 states and 38715 transitions. [2022-01-10 19:24:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 19:24:32,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:32,542 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:32,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:24:32,542 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1849332874, now seen corresponding path program 1 times [2022-01-10 19:24:32,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:32,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430018608] [2022-01-10 19:24:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:32,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:32,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:32,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430018608] [2022-01-10 19:24:32,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430018608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:32,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:32,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865074051] [2022-01-10 19:24:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:32,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:32,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:32,575 INFO L87 Difference]: Start difference. First operand 30566 states and 38715 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:34,126 INFO L93 Difference]: Finished difference Result 71610 states and 88863 transitions. [2022-01-10 19:24:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-10 19:24:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:34,201 INFO L225 Difference]: With dead ends: 71610 [2022-01-10 19:24:34,202 INFO L226 Difference]: Without dead ends: 43234 [2022-01-10 19:24:34,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:34,233 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4204 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:34,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 4681 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43234 states. [2022-01-10 19:24:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43234 to 43040. [2022-01-10 19:24:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43040 states, 43038 states have (on average 1.2469677959012966) internal successors, (53667), 43039 states have internal predecessors, (53667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43040 states to 43040 states and 53667 transitions. [2022-01-10 19:24:36,104 INFO L78 Accepts]: Start accepts. Automaton has 43040 states and 53667 transitions. Word has length 140 [2022-01-10 19:24:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:36,104 INFO L470 AbstractCegarLoop]: Abstraction has 43040 states and 53667 transitions. [2022-01-10 19:24:36,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 43040 states and 53667 transitions. [2022-01-10 19:24:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 19:24:36,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:36,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:36,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:24:36,135 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:36,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:36,135 INFO L85 PathProgramCache]: Analyzing trace with hash 292694916, now seen corresponding path program 1 times [2022-01-10 19:24:36,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:36,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111543253] [2022-01-10 19:24:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:36,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 19:24:36,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:36,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111543253] [2022-01-10 19:24:36,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111543253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:36,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:36,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:36,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367932203] [2022-01-10 19:24:36,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:36,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:36,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:36,162 INFO L87 Difference]: Start difference. First operand 43040 states and 53667 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:38,033 INFO L93 Difference]: Finished difference Result 75448 states and 93154 transitions. [2022-01-10 19:24:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 157 [2022-01-10 19:24:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:38,139 INFO L225 Difference]: With dead ends: 75448 [2022-01-10 19:24:38,140 INFO L226 Difference]: Without dead ends: 44000 [2022-01-10 19:24:38,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:38,195 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 4272 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:38,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4272 Valid, 4741 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44000 states. [2022-01-10 19:24:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44000 to 42320. [2022-01-10 19:24:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42320 states, 42318 states have (on average 1.2301857365660003) internal successors, (52059), 42319 states have internal predecessors, (52059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42320 states to 42320 states and 52059 transitions. [2022-01-10 19:24:40,263 INFO L78 Accepts]: Start accepts. Automaton has 42320 states and 52059 transitions. Word has length 157 [2022-01-10 19:24:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:40,263 INFO L470 AbstractCegarLoop]: Abstraction has 42320 states and 52059 transitions. [2022-01-10 19:24:40,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 42320 states and 52059 transitions. [2022-01-10 19:24:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:24:40,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:40,291 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:40,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:24:40,291 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 436238372, now seen corresponding path program 1 times [2022-01-10 19:24:40,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:40,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649730974] [2022-01-10 19:24:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:40,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 19:24:40,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:40,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649730974] [2022-01-10 19:24:40,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649730974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:40,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:40,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:40,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540507542] [2022-01-10 19:24:40,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:40,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:40,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:40,332 INFO L87 Difference]: Start difference. First operand 42320 states and 52059 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) [2022-01-10 19:24:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:41,826 INFO L93 Difference]: Finished difference Result 76996 states and 93573 transitions. [2022-01-10 19:24:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:41,826 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 158 [2022-01-10 19:24:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:41,879 INFO L225 Difference]: With dead ends: 76996 [2022-01-10 19:24:41,879 INFO L226 Difference]: Without dead ends: 36894 [2022-01-10 19:24:41,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:41,903 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 287 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 8955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:41,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 8955 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-10 19:24:43,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-10 19:24:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.225670913526701) internal successors, (45215), 36891 states have internal predecessors, (45215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45215 transitions. [2022-01-10 19:24:43,617 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45215 transitions. Word has length 158 [2022-01-10 19:24:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:43,618 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45215 transitions. [2022-01-10 19:24:43,620 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) [2022-01-10 19:24:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45215 transitions. [2022-01-10 19:24:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:24:43,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:43,645 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:43,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:24:43,646 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1433459742, now seen corresponding path program 1 times [2022-01-10 19:24:43,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:43,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680353884] [2022-01-10 19:24:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:43,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:43,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:43,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680353884] [2022-01-10 19:24:43,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680353884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:43,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:43,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:43,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018586055] [2022-01-10 19:24:43,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:43,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:43,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:43,692 INFO L87 Difference]: Start difference. First operand 36892 states and 45215 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:45,438 INFO L93 Difference]: Finished difference Result 61020 states and 74061 transitions. [2022-01-10 19:24:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 19:24:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:45,494 INFO L225 Difference]: With dead ends: 61020 [2022-01-10 19:24:45,494 INFO L226 Difference]: Without dead ends: 36894 [2022-01-10 19:24:45,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:45,513 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 278 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:45,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8967 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:24:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-10 19:24:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-10 19:24:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2214421252371916) internal successors, (45059), 36891 states have internal predecessors, (45059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45059 transitions. [2022-01-10 19:24:47,214 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45059 transitions. Word has length 158 [2022-01-10 19:24:47,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:47,214 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45059 transitions. [2022-01-10 19:24:47,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45059 transitions. [2022-01-10 19:24:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:24:47,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:47,232 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:47,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:24:47,232 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -525025355, now seen corresponding path program 1 times [2022-01-10 19:24:47,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:47,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086972494] [2022-01-10 19:24:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:47,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:47,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:47,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086972494] [2022-01-10 19:24:47,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086972494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:47,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:47,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:47,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890472851] [2022-01-10 19:24:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:47,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:47,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:47,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:47,272 INFO L87 Difference]: Start difference. First operand 36892 states and 45059 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:48,651 INFO L93 Difference]: Finished difference Result 60996 states and 73761 transitions. [2022-01-10 19:24:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 19:24:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:48,696 INFO L225 Difference]: With dead ends: 60996 [2022-01-10 19:24:48,697 INFO L226 Difference]: Without dead ends: 36894 [2022-01-10 19:24:48,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:48,715 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 278 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8981 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:48,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8981 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-10 19:24:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-10 19:24:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2185145025752235) internal successors, (44951), 36891 states have internal predecessors, (44951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 44951 transitions. [2022-01-10 19:24:50,114 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 44951 transitions. Word has length 158 [2022-01-10 19:24:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:50,114 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 44951 transitions. [2022-01-10 19:24:50,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 44951 transitions. [2022-01-10 19:24:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:24:50,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:50,129 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:50,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:24:50,130 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash 879108042, now seen corresponding path program 1 times [2022-01-10 19:24:50,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:50,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676663784] [2022-01-10 19:24:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:50,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 19:24:50,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:50,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676663784] [2022-01-10 19:24:50,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676663784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:50,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:50,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:50,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400858965] [2022-01-10 19:24:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:50,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:50,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:50,221 INFO L87 Difference]: Start difference. First operand 36892 states and 44951 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:51,914 INFO L93 Difference]: Finished difference Result 60124 states and 72706 transitions. [2022-01-10 19:24:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:51,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 158 [2022-01-10 19:24:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:51,967 INFO L225 Difference]: With dead ends: 60124 [2022-01-10 19:24:51,967 INFO L226 Difference]: Without dead ends: 38554 [2022-01-10 19:24:51,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:51,995 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 331 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 8850 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 [2022-01-10 19:24:52,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 8850 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38554 states. [2022-01-10 19:24:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38554 to 36838. [2022-01-10 19:24:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.2035237267890107) internal successors, (44333), 36837 states have internal predecessors, (44333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 44333 transitions. [2022-01-10 19:24:53,478 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 44333 transitions. Word has length 158 [2022-01-10 19:24:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:53,478 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 44333 transitions. [2022-01-10 19:24:53,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 44333 transitions. [2022-01-10 19:24:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:24:53,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:53,509 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:53,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:24:53,509 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:53,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1949605532, now seen corresponding path program 1 times [2022-01-10 19:24:53,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:53,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871092284] [2022-01-10 19:24:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:53,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:53,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:53,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871092284] [2022-01-10 19:24:53,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871092284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:53,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:53,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:53,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729195384] [2022-01-10 19:24:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:53,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:53,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:53,566 INFO L87 Difference]: Start difference. First operand 36838 states and 44333 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:55,116 INFO L93 Difference]: Finished difference Result 61074 states and 72667 transitions. [2022-01-10 19:24:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:55,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 19:24:55,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:55,165 INFO L225 Difference]: With dead ends: 61074 [2022-01-10 19:24:55,165 INFO L226 Difference]: Without dead ends: 37008 [2022-01-10 19:24:55,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:55,185 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 305 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 8919 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 [2022-01-10 19:24:55,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 8919 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37008 states. [2022-01-10 19:24:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37008 to 36838. [2022-01-10 19:24:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.1863665978933653) internal successors, (43701), 36837 states have internal predecessors, (43701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 43701 transitions. [2022-01-10 19:24:56,641 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 43701 transitions. Word has length 158 [2022-01-10 19:24:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:56,641 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 43701 transitions. [2022-01-10 19:24:56,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 43701 transitions. [2022-01-10 19:24:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 19:24:56,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:56,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:56,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:24:56,654 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1055862078, now seen corresponding path program 1 times [2022-01-10 19:24:56,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:56,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126424715] [2022-01-10 19:24:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:56,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:56,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:56,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126424715] [2022-01-10 19:24:56,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126424715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:56,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:56,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:56,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481863145] [2022-01-10 19:24:56,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:56,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:56,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:56,688 INFO L87 Difference]: Start difference. First operand 36838 states and 43701 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:57,753 INFO L93 Difference]: Finished difference Result 53312 states and 62747 transitions. [2022-01-10 19:24:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 19:24:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:57,793 INFO L225 Difference]: With dead ends: 53312 [2022-01-10 19:24:57,793 INFO L226 Difference]: Without dead ends: 27610 [2022-01-10 19:24:57,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:57,816 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 279 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 8891 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 [2022-01-10 19:24:57,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 8891 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-01-10 19:24:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 27536. [2022-01-10 19:24:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.192162417374882) internal successors, (32825), 27535 states have internal predecessors, (32825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32825 transitions. [2022-01-10 19:24:58,992 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32825 transitions. Word has length 159 [2022-01-10 19:24:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:58,993 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32825 transitions. [2022-01-10 19:24:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32825 transitions. [2022-01-10 19:24:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 19:24:59,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:59,002 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:59,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 19:24:59,003 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 755364622, now seen corresponding path program 1 times [2022-01-10 19:24:59,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:59,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200942771] [2022-01-10 19:24:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:59,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:59,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:59,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200942771] [2022-01-10 19:24:59,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200942771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:59,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:59,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:24:59,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639632080] [2022-01-10 19:24:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:59,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:59,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:59,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:59,091 INFO L87 Difference]: Start difference. First operand 27536 states and 32825 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:00,424 INFO L93 Difference]: Finished difference Result 45260 states and 53059 transitions. [2022-01-10 19:25:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:00,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 19:25:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:00,462 INFO L225 Difference]: With dead ends: 45260 [2022-01-10 19:25:00,463 INFO L226 Difference]: Without dead ends: 27658 [2022-01-10 19:25:00,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:00,482 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 306 mSDsluCounter, 4282 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 8898 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:00,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 8898 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:25:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27658 states. [2022-01-10 19:25:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27658 to 27536. [2022-01-10 19:25:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.1754558001016924) internal successors, (32365), 27535 states have internal predecessors, (32365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32365 transitions. [2022-01-10 19:25:01,875 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32365 transitions. Word has length 159 [2022-01-10 19:25:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:01,875 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32365 transitions. [2022-01-10 19:25:01,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32365 transitions. [2022-01-10 19:25:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:25:01,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:01,885 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:01,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 19:25:01,885 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1302776373, now seen corresponding path program 1 times [2022-01-10 19:25:01,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:01,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348444479] [2022-01-10 19:25:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:01,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 19:25:01,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:01,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348444479] [2022-01-10 19:25:01,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348444479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:01,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:01,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:25:01,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010004473] [2022-01-10 19:25:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:01,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:25:01,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:01,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:25:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:25:01,944 INFO L87 Difference]: Start difference. First operand 27536 states and 32365 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:03,562 INFO L93 Difference]: Finished difference Result 49246 states and 56655 transitions. [2022-01-10 19:25:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:25:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-10 19:25:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:03,595 INFO L225 Difference]: With dead ends: 49246 [2022-01-10 19:25:03,595 INFO L226 Difference]: Without dead ends: 23854 [2022-01-10 19:25:03,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:25:03,613 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 1045 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:03,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 16800 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2022-01-10 19:25:04,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 20764. [2022-01-10 19:25:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20764 states, 20762 states have (on average 1.1788363356131395) internal successors, (24475), 20763 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20764 states to 20764 states and 24475 transitions. [2022-01-10 19:25:04,683 INFO L78 Accepts]: Start accepts. Automaton has 20764 states and 24475 transitions. Word has length 160 [2022-01-10 19:25:04,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:04,683 INFO L470 AbstractCegarLoop]: Abstraction has 20764 states and 24475 transitions. [2022-01-10 19:25:04,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20764 states and 24475 transitions. [2022-01-10 19:25:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:25:04,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:04,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:04,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 19:25:04,690 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1124602991, now seen corresponding path program 1 times [2022-01-10 19:25:04,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259372687] [2022-01-10 19:25:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:04,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 19:25:04,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:04,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259372687] [2022-01-10 19:25:04,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259372687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:04,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:04,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:25:04,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544211749] [2022-01-10 19:25:04,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:04,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:25:04,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:25:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:25:04,735 INFO L87 Difference]: Start difference. First operand 20764 states and 24475 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:05,848 INFO L93 Difference]: Finished difference Result 37508 states and 42876 transitions. [2022-01-10 19:25:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:25:05,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-10 19:25:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:05,876 INFO L225 Difference]: With dead ends: 37508 [2022-01-10 19:25:05,876 INFO L226 Difference]: Without dead ends: 18900 [2022-01-10 19:25:05,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:25:05,895 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 896 mSDsluCounter, 12471 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 16804 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:05,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 16804 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:05,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18900 states. [2022-01-10 19:25:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18900 to 17048. [2022-01-10 19:25:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17048 states, 17046 states have (on average 1.1793382611756424) internal successors, (20103), 17047 states have internal predecessors, (20103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17048 states to 17048 states and 20103 transitions. [2022-01-10 19:25:06,902 INFO L78 Accepts]: Start accepts. Automaton has 17048 states and 20103 transitions. Word has length 160 [2022-01-10 19:25:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:06,902 INFO L470 AbstractCegarLoop]: Abstraction has 17048 states and 20103 transitions. [2022-01-10 19:25:06,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17048 states and 20103 transitions. [2022-01-10 19:25:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:25:06,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:06,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:06,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 19:25:06,907 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash -325117326, now seen corresponding path program 1 times [2022-01-10 19:25:06,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:06,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98600075] [2022-01-10 19:25:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:06,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 19:25:06,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:06,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98600075] [2022-01-10 19:25:06,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98600075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:06,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:06,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:25:06,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129704470] [2022-01-10 19:25:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:06,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:25:06,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:25:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:25:06,963 INFO L87 Difference]: Start difference. First operand 17048 states and 20103 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:07,640 INFO L93 Difference]: Finished difference Result 23497 states and 27035 transitions. [2022-01-10 19:25:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:25:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-10 19:25:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:07,648 INFO L225 Difference]: With dead ends: 23497 [2022-01-10 19:25:07,648 INFO L226 Difference]: Without dead ends: 6077 [2022-01-10 19:25:07,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:25:07,659 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 770 mSDsluCounter, 12423 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 16756 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:07,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 16756 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2022-01-10 19:25:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5939. [2022-01-10 19:25:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5937 states have (on average 1.3442816237156814) internal successors, (7981), 5938 states have internal predecessors, (7981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7981 transitions. [2022-01-10 19:25:07,910 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7981 transitions. Word has length 160 [2022-01-10 19:25:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:07,910 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7981 transitions. [2022-01-10 19:25:07,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7981 transitions. [2022-01-10 19:25:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-10 19:25:07,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:07,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:07,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 19:25:07,915 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:07,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:07,915 INFO L85 PathProgramCache]: Analyzing trace with hash 224011255, now seen corresponding path program 1 times [2022-01-10 19:25:07,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:07,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964672509] [2022-01-10 19:25:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:07,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat