/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/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:40:42,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:40:42,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:40:42,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:40:42,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:40:42,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:40:42,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:40:42,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:40:42,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:40:42,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:40:42,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:40:42,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:40:42,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:40:42,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:40:42,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:40:42,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:40:42,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:40:42,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:40:42,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:40:42,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:40:42,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:40:43,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:40:43,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:40:43,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:40:43,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:40:43,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:40:43,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:40:43,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:40:43,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:40:43,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:40:43,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:40:43,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:40:43,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:40:43,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:40:43,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:40:43,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:40:43,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:40:43,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:40:43,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:40:43,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:40:43,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:40:43,043 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 18:40:43,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:40:43,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:40:43,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:40:43,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:40:43,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:40:43,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:40:43,070 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:40:43,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:40:43,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:40:43,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:40:43,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:40:43,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:40:43,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:40:43,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:40:43,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:40:43,073 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:40:43,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:40:43,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:40:43,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:40:43,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:40:43,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:40:43,288 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:40:43,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2022-01-10 18:40:43,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5648d3c/c5d27e1c095b448d871f74989e94c86c/FLAG86c77c5b7 [2022-01-10 18:40:43,790 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:40:43,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2022-01-10 18:40:43,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5648d3c/c5d27e1c095b448d871f74989e94c86c/FLAG86c77c5b7 [2022-01-10 18:40:44,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5648d3c/c5d27e1c095b448d871f74989e94c86c [2022-01-10 18:40:44,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:40:44,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:40:44,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:40:44,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:40:44,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:40:44,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420010d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44, skipping insertion in model container [2022-01-10 18:40:44,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:40:44,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:40:44,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c[30998,31011] [2022-01-10 18:40:44,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:40:44,685 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:40:44,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c[30998,31011] [2022-01-10 18:40:44,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:40:44,775 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:40:44,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44 WrapperNode [2022-01-10 18:40:44,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:40:44,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:40:44,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:40:44,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:40:44,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,847 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 981 [2022-01-10 18:40:44,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:40:44,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:40:44,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:40:44,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:40:44,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:40:44,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:40:44,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:40:44,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:40:44,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (1/1) ... [2022-01-10 18:40:44,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:40:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:40:44,980 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 18:40:45,020 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 18:40:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:40:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:40:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:40:45,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:40:45,199 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:40:45,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:40:45,878 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:40:45,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:40:45,885 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:40:45,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:40:45 BoogieIcfgContainer [2022-01-10 18:40:45,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:40:45,888 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:40:45,888 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:40:45,889 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:40:45,890 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:40:45" (1/1) ... [2022-01-10 18:40:46,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:40:46 BasicIcfg [2022-01-10 18:40:46,292 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:40:46,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:40:46,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:40:46,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:40:46,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:40:44" (1/4) ... [2022-01-10 18:40:46,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7124e99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:40:46, skipping insertion in model container [2022-01-10 18:40:46,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:44" (2/4) ... [2022-01-10 18:40:46,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7124e99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:40:46, skipping insertion in model container [2022-01-10 18:40:46,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:40:45" (3/4) ... [2022-01-10 18:40:46,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7124e99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:40:46, skipping insertion in model container [2022-01-10 18:40:46,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:40:46" (4/4) ... [2022-01-10 18:40:46,299 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.cTransformedIcfg [2022-01-10 18:40:46,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:40:46,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:40:46,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:40:46,350 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 18:40:46,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:40:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 18:40:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:40:46,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:46,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:46,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1990495740, now seen corresponding path program 1 times [2022-01-10 18:40:46,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:46,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232309578] [2022-01-10 18:40:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:46,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:46,802 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 18:40:46,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:46,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232309578] [2022-01-10 18:40:46,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232309578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:46,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:46,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:40:46,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365110607] [2022-01-10 18:40:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:46,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:40:46,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:40:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:40:46,837 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:46,909 INFO L93 Difference]: Finished difference Result 453 states and 802 transitions. [2022-01-10 18:40:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:40:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:40:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:46,921 INFO L225 Difference]: With dead ends: 453 [2022-01-10 18:40:46,921 INFO L226 Difference]: Without dead ends: 320 [2022-01-10 18:40:46,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:40:46,926 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:46,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-10 18:40:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-10 18:40:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.8025078369905956) internal successors, (575), 319 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 18:40:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 575 transitions. [2022-01-10 18:40:46,985 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 575 transitions. Word has length 77 [2022-01-10 18:40:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:46,985 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 575 transitions. [2022-01-10 18:40:46,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 575 transitions. [2022-01-10 18:40:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:40:46,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:46,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:46,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:40:46,988 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2057502493, now seen corresponding path program 1 times [2022-01-10 18:40:46,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:46,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556650579] [2022-01-10 18:40:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:46,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:47,209 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 18:40:47,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:47,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556650579] [2022-01-10 18:40:47,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556650579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:47,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:47,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:40:47,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345586762] [2022-01-10 18:40:47,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:47,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:40:47,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:40:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:47,213 INFO L87 Difference]: Start difference. First operand 320 states and 575 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:47,327 INFO L93 Difference]: Finished difference Result 448 states and 792 transitions. [2022-01-10 18:40:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:40:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:40:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:47,331 INFO L225 Difference]: With dead ends: 448 [2022-01-10 18:40:47,331 INFO L226 Difference]: Without dead ends: 320 [2022-01-10 18:40:47,334 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 18:40:47,334 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 3 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:47,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2243 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-10 18:40:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-10 18:40:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.658307210031348) internal successors, (529), 319 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 18:40:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 529 transitions. [2022-01-10 18:40:47,347 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 529 transitions. Word has length 77 [2022-01-10 18:40:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:47,348 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 529 transitions. [2022-01-10 18:40:47,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 529 transitions. [2022-01-10 18:40:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 18:40:47,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:47,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:47,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:40:47,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1444657055, now seen corresponding path program 1 times [2022-01-10 18:40:47,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735457616] [2022-01-10 18:40:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:47,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:47,705 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 18:40:47,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:47,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735457616] [2022-01-10 18:40:47,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735457616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:47,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:47,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:47,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426574996] [2022-01-10 18:40:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:47,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:47,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:47,707 INFO L87 Difference]: Start difference. First operand 320 states and 529 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:40:49,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:40:49,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:49,983 INFO L93 Difference]: Finished difference Result 556 states and 933 transitions. [2022-01-10 18:40:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:49,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 18:40:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:49,986 INFO L225 Difference]: With dead ends: 556 [2022-01-10 18:40:49,987 INFO L226 Difference]: Without dead ends: 432 [2022-01-10 18:40:49,987 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 18:40:49,988 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 183 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:49,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1002 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 18:40:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-10 18:40:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-01-10 18:40:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6643356643356644) internal successors, (714), 429 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-01-10 18:40:50,011 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 122 [2022-01-10 18:40:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:50,011 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-01-10 18:40:50,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:40:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-01-10 18:40:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:40:50,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:50,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:40:50,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1232504303, now seen corresponding path program 1 times [2022-01-10 18:40:50,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:50,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184774744] [2022-01-10 18:40:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:50,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:50,186 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 18:40:50,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:50,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184774744] [2022-01-10 18:40:50,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184774744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:50,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:50,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:40:50,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001475470] [2022-01-10 18:40:50,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:50,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:40:50,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:40:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:50,188 INFO L87 Difference]: Start difference. First operand 430 states and 714 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:50,281 INFO L93 Difference]: Finished difference Result 1226 states and 2027 transitions. [2022-01-10 18:40:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:40:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 18:40:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:50,285 INFO L225 Difference]: With dead ends: 1226 [2022-01-10 18:40:50,285 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 18:40:50,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:50,292 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1438 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:50,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1438 Valid, 1009 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 18:40:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-01-10 18:40:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.6535714285714285) internal successors, (1389), 840 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states 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 18:40:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1389 transitions. [2022-01-10 18:40:50,323 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1389 transitions. Word has length 125 [2022-01-10 18:40:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:50,324 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1389 transitions. [2022-01-10 18:40:50,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1389 transitions. [2022-01-10 18:40:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:40:50,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:50,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:50,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:40:50,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:50,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1938394123, now seen corresponding path program 1 times [2022-01-10 18:40:50,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:50,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745538824] [2022-01-10 18:40:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:50,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:50,474 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 18:40:50,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745538824] [2022-01-10 18:40:50,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745538824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:50,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:50,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:50,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603668191] [2022-01-10 18:40:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:50,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:50,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:50,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:50,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:50,476 INFO L87 Difference]: Start difference. First operand 841 states and 1389 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:40:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:50,508 INFO L93 Difference]: Finished difference Result 1284 states and 2149 transitions. [2022-01-10 18:40:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 18:40:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:50,512 INFO L225 Difference]: With dead ends: 1284 [2022-01-10 18:40:50,513 INFO L226 Difference]: Without dead ends: 1042 [2022-01-10 18:40:50,515 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 18:40:50,516 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 192 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:50,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-01-10 18:40:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2022-01-10 18:40:50,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 1.6631376323387872) internal successors, (1728), 1039 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1728 transitions. [2022-01-10 18:40:50,543 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1728 transitions. Word has length 126 [2022-01-10 18:40:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:50,544 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1728 transitions. [2022-01-10 18:40:50,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:40:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1728 transitions. [2022-01-10 18:40:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:40:50,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:50,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:50,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:40:50,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash -326070934, now seen corresponding path program 1 times [2022-01-10 18:40:50,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:50,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288677443] [2022-01-10 18:40:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:50,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:50,647 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 18:40:50,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288677443] [2022-01-10 18:40:50,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288677443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:50,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:50,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:50,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088982666] [2022-01-10 18:40:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:50,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:50,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:50,649 INFO L87 Difference]: Start difference. First operand 1040 states and 1728 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:40:50,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:50,687 INFO L93 Difference]: Finished difference Result 1919 states and 3231 transitions. [2022-01-10 18:40:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:50,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 18:40:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:50,691 INFO L225 Difference]: With dead ends: 1919 [2022-01-10 18:40:50,691 INFO L226 Difference]: Without dead ends: 1266 [2022-01-10 18:40:50,692 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 18:40:50,693 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 200 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1038 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 18:40:50,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1038 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-01-10 18:40:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1250. [2022-01-10 18:40:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.66693354683747) internal successors, (2082), 1249 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 18:40:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 2082 transitions. [2022-01-10 18:40:50,720 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 2082 transitions. Word has length 126 [2022-01-10 18:40:50,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:50,720 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 2082 transitions. [2022-01-10 18:40:50,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:40:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 2082 transitions. [2022-01-10 18:40:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 18:40:50,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:50,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:50,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:40:50,722 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash -641884748, now seen corresponding path program 1 times [2022-01-10 18:40:50,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:50,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317729150] [2022-01-10 18:40:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:50,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:50,856 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 18:40:50,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:50,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317729150] [2022-01-10 18:40:50,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317729150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:50,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:50,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:40:50,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783028629] [2022-01-10 18:40:50,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:50,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:40:50,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:50,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:40:50,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:50,858 INFO L87 Difference]: Start difference. First operand 1250 states and 2082 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:50,967 INFO L93 Difference]: Finished difference Result 3700 states and 6161 transitions. [2022-01-10 18:40:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:40:50,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 18:40:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:50,974 INFO L225 Difference]: With dead ends: 3700 [2022-01-10 18:40:50,974 INFO L226 Difference]: Without dead ends: 2462 [2022-01-10 18:40:50,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:50,976 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1013 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:50,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1705 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-01-10 18:40:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2460. [2022-01-10 18:40:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2459 states have (on average 1.656364375762505) internal successors, (4073), 2459 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states 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 18:40:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4073 transitions. [2022-01-10 18:40:51,047 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4073 transitions. Word has length 127 [2022-01-10 18:40:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:51,047 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 4073 transitions. [2022-01-10 18:40:51,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4073 transitions. [2022-01-10 18:40:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 18:40:51,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:51,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:51,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:40:51,050 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash -799781089, now seen corresponding path program 1 times [2022-01-10 18:40:51,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:51,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396207127] [2022-01-10 18:40:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:51,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:51,095 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 18:40:51,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:51,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396207127] [2022-01-10 18:40:51,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396207127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:51,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:51,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:51,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392129172] [2022-01-10 18:40:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:51,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:51,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:51,097 INFO L87 Difference]: Start difference. First operand 2460 states and 4073 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:51,191 INFO L93 Difference]: Finished difference Result 7323 states and 12121 transitions. [2022-01-10 18:40:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:51,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 18:40:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:51,205 INFO L225 Difference]: With dead ends: 7323 [2022-01-10 18:40:51,205 INFO L226 Difference]: Without dead ends: 4892 [2022-01-10 18:40:51,209 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 18:40:51,209 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 507 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:51,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-01-10 18:40:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 2474. [2022-01-10 18:40:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2473 states have (on average 1.6538617064294379) internal successors, (4090), 2473 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states 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 18:40:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4090 transitions. [2022-01-10 18:40:51,314 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4090 transitions. Word has length 129 [2022-01-10 18:40:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:51,314 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 4090 transitions. [2022-01-10 18:40:51,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:51,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4090 transitions. [2022-01-10 18:40:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 18:40:51,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:51,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:51,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:40:51,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash -385901352, now seen corresponding path program 1 times [2022-01-10 18:40:51,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:51,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929844361] [2022-01-10 18:40:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:51,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:51,424 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 18:40:51,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929844361] [2022-01-10 18:40:51,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929844361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:51,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:51,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:40:51,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163383257] [2022-01-10 18:40:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:51,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:40:51,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:40:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:51,426 INFO L87 Difference]: Start difference. First operand 2474 states and 4090 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:40:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:51,587 INFO L93 Difference]: Finished difference Result 7125 states and 11769 transitions. [2022-01-10 18:40:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:40:51,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-10 18:40:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:51,600 INFO L225 Difference]: With dead ends: 7125 [2022-01-10 18:40:51,600 INFO L226 Difference]: Without dead ends: 4771 [2022-01-10 18:40:51,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:51,604 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 1224 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:51,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1212 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2022-01-10 18:40:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4769. [2022-01-10 18:40:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4769 states, 4768 states have (on average 1.6436661073825503) internal successors, (7837), 4768 states have internal predecessors, (7837), 0 states have call successors, (0), 0 states 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 18:40:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4769 states to 4769 states and 7837 transitions. [2022-01-10 18:40:51,778 INFO L78 Accepts]: Start accepts. Automaton has 4769 states and 7837 transitions. Word has length 130 [2022-01-10 18:40:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:51,778 INFO L470 AbstractCegarLoop]: Abstraction has 4769 states and 7837 transitions. [2022-01-10 18:40:51,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:40:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4769 states and 7837 transitions. [2022-01-10 18:40:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:40:51,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:51,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:51,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:40:51,783 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash -475825400, now seen corresponding path program 1 times [2022-01-10 18:40:51,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:51,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067427894] [2022-01-10 18:40:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:51,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:51,867 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 18:40:51,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:51,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067427894] [2022-01-10 18:40:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067427894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:51,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:51,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:40:51,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493313517] [2022-01-10 18:40:51,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:51,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:40:51,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:40:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:51,869 INFO L87 Difference]: Start difference. First operand 4769 states and 7837 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 18:40:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:52,212 INFO L93 Difference]: Finished difference Result 16987 states and 27775 transitions. [2022-01-10 18:40:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:40:52,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-01-10 18:40:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:52,269 INFO L225 Difference]: With dead ends: 16987 [2022-01-10 18:40:52,269 INFO L226 Difference]: Without dead ends: 12777 [2022-01-10 18:40:52,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:52,295 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 1183 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:52,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 2615 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12777 states. [2022-01-10 18:40:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12777 to 5257. [2022-01-10 18:40:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 1.6485920852359208) internal successors, (8665), 5256 states have internal predecessors, (8665), 0 states have call successors, (0), 0 states 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 18:40:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8665 transitions. [2022-01-10 18:40:52,605 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8665 transitions. Word has length 131 [2022-01-10 18:40:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:52,605 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 8665 transitions. [2022-01-10 18:40:52,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 18:40:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8665 transitions. [2022-01-10 18:40:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 18:40:52,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:52,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:52,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:40:52,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1916050447, now seen corresponding path program 1 times [2022-01-10 18:40:52,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:52,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143335557] [2022-01-10 18:40:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:52,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:52,783 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 18:40:52,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:52,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143335557] [2022-01-10 18:40:52,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143335557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:52,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:52,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:52,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460368986] [2022-01-10 18:40:52,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:52,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:52,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:52,785 INFO L87 Difference]: Start difference. First operand 5257 states and 8665 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:40:54,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:40:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:55,282 INFO L93 Difference]: Finished difference Result 11478 states and 19129 transitions. [2022-01-10 18:40:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:55,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 18:40:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:55,296 INFO L225 Difference]: With dead ends: 11478 [2022-01-10 18:40:55,296 INFO L226 Difference]: Without dead ends: 8220 [2022-01-10 18:40:55,302 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 18:40:55,303 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 181 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:55,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1022 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:40:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2022-01-10 18:40:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 8218. [2022-01-10 18:40:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8218 states, 8217 states have (on average 1.6562005598150176) internal successors, (13609), 8217 states have internal predecessors, (13609), 0 states have call successors, (0), 0 states 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 18:40:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8218 states to 8218 states and 13609 transitions. [2022-01-10 18:40:55,632 INFO L78 Accepts]: Start accepts. Automaton has 8218 states and 13609 transitions. Word has length 132 [2022-01-10 18:40:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:55,633 INFO L470 AbstractCegarLoop]: Abstraction has 8218 states and 13609 transitions. [2022-01-10 18:40:55,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:40:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8218 states and 13609 transitions. [2022-01-10 18:40:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 18:40:55,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:55,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:55,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:40:55,639 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:55,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:55,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1567003719, now seen corresponding path program 1 times [2022-01-10 18:40:55,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:55,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75003838] [2022-01-10 18:40:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:55,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:55,754 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 18:40:55,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:55,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75003838] [2022-01-10 18:40:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75003838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:55,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:55,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081883412] [2022-01-10 18:40:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:55,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:55,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:55,755 INFO L87 Difference]: Start difference. First operand 8218 states and 13609 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:40:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:56,191 INFO L93 Difference]: Finished difference Result 22854 states and 37684 transitions. [2022-01-10 18:40:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:56,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-10 18:40:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:56,219 INFO L225 Difference]: With dead ends: 22854 [2022-01-10 18:40:56,219 INFO L226 Difference]: Without dead ends: 15697 [2022-01-10 18:40:56,231 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 18:40:56,232 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 384 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:56,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1472 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15697 states. [2022-01-10 18:40:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15697 to 15695. [2022-01-10 18:40:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15695 states, 15694 states have (on average 1.642538549764241) internal successors, (25778), 15694 states have internal predecessors, (25778), 0 states have call successors, (0), 0 states 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 18:40:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15695 states to 15695 states and 25778 transitions. [2022-01-10 18:40:56,910 INFO L78 Accepts]: Start accepts. Automaton has 15695 states and 25778 transitions. Word has length 135 [2022-01-10 18:40:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:56,910 INFO L470 AbstractCegarLoop]: Abstraction has 15695 states and 25778 transitions. [2022-01-10 18:40:56,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:40:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 15695 states and 25778 transitions. [2022-01-10 18:40:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 18:40:56,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:56,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:56,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:40:56,920 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -504017957, now seen corresponding path program 1 times [2022-01-10 18:40:56,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:56,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759233593] [2022-01-10 18:40:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:56,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:56,971 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 18:40:56,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:56,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759233593] [2022-01-10 18:40:56,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759233593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:56,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:56,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:56,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662817852] [2022-01-10 18:40:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:56,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:56,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:56,973 INFO L87 Difference]: Start difference. First operand 15695 states and 25778 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:40:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:57,577 INFO L93 Difference]: Finished difference Result 31584 states and 51758 transitions. [2022-01-10 18:40:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:40:57,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-10 18:40:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:57,616 INFO L225 Difference]: With dead ends: 31584 [2022-01-10 18:40:57,617 INFO L226 Difference]: Without dead ends: 23267 [2022-01-10 18:40:57,631 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 18:40:57,632 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 507 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:57,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1053 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23267 states. [2022-01-10 18:40:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23267 to 15695. [2022-01-10 18:40:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15695 states, 15694 states have (on average 1.6419013635784376) internal successors, (25768), 15694 states have internal predecessors, (25768), 0 states have call successors, (0), 0 states 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 18:40:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15695 states to 15695 states and 25768 transitions. [2022-01-10 18:40:58,257 INFO L78 Accepts]: Start accepts. Automaton has 15695 states and 25768 transitions. Word has length 135 [2022-01-10 18:40:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:58,257 INFO L470 AbstractCegarLoop]: Abstraction has 15695 states and 25768 transitions. [2022-01-10 18:40:58,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 18:40:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 15695 states and 25768 transitions. [2022-01-10 18:40:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 18:40:58,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:58,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:58,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:40:58,266 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1470541709, now seen corresponding path program 1 times [2022-01-10 18:40:58,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:58,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574330039] [2022-01-10 18:40:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:58,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:58,436 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 18:40:58,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:58,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574330039] [2022-01-10 18:40:58,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574330039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:58,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:58,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:40:58,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079465028] [2022-01-10 18:40:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:58,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:40:58,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:40:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:40:58,437 INFO L87 Difference]: Start difference. First operand 15695 states and 25768 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 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 18:40:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:59,428 INFO L93 Difference]: Finished difference Result 45705 states and 74957 transitions. [2022-01-10 18:40:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:40:59,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 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 136 [2022-01-10 18:40:59,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:59,478 INFO L225 Difference]: With dead ends: 45705 [2022-01-10 18:40:59,478 INFO L226 Difference]: Without dead ends: 30659 [2022-01-10 18:40:59,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:59,495 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1357 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:59,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 1009 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30659 states. [2022-01-10 18:41:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30659 to 30657. [2022-01-10 18:41:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30657 states, 30656 states have (on average 1.633383350730689) internal successors, (50073), 30656 states have internal predecessors, (50073), 0 states have call successors, (0), 0 states 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 18:41:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30657 states to 30657 states and 50073 transitions. [2022-01-10 18:41:00,482 INFO L78 Accepts]: Start accepts. Automaton has 30657 states and 50073 transitions. Word has length 136 [2022-01-10 18:41:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:00,482 INFO L470 AbstractCegarLoop]: Abstraction has 30657 states and 50073 transitions. [2022-01-10 18:41:00,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 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 18:41:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 30657 states and 50073 transitions. [2022-01-10 18:41:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 18:41:00,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:00,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:00,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:41:00,501 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1211855423, now seen corresponding path program 1 times [2022-01-10 18:41:00,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:00,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379563893] [2022-01-10 18:41:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:00,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:00,586 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 18:41:00,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:00,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379563893] [2022-01-10 18:41:00,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379563893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:00,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:00,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:00,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455139073] [2022-01-10 18:41:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:00,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:00,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:00,588 INFO L87 Difference]: Start difference. First operand 30657 states and 50073 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 18:41:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:01,821 INFO L93 Difference]: Finished difference Result 66335 states and 109449 transitions. [2022-01-10 18:41:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:01,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-10 18:41:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:01,890 INFO L225 Difference]: With dead ends: 66335 [2022-01-10 18:41:01,891 INFO L226 Difference]: Without dead ends: 42365 [2022-01-10 18:41:01,915 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 18:41:01,915 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 187 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1162 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 18:41:01,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1162 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42365 states. [2022-01-10 18:41:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42365 to 41555. [2022-01-10 18:41:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41555 states, 41554 states have (on average 1.6305289502815614) internal successors, (67755), 41554 states have internal predecessors, (67755), 0 states have call successors, (0), 0 states 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 18:41:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41555 states to 41555 states and 67755 transitions. [2022-01-10 18:41:03,405 INFO L78 Accepts]: Start accepts. Automaton has 41555 states and 67755 transitions. Word has length 137 [2022-01-10 18:41:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:03,405 INFO L470 AbstractCegarLoop]: Abstraction has 41555 states and 67755 transitions. [2022-01-10 18:41:03,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 18:41:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 41555 states and 67755 transitions. [2022-01-10 18:41:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 18:41:03,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:03,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:03,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:41:03,429 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1477204610, now seen corresponding path program 1 times [2022-01-10 18:41:03,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439790764] [2022-01-10 18:41:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:03,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:03,534 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 18:41:03,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:03,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439790764] [2022-01-10 18:41:03,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439790764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:03,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:03,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:03,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007480107] [2022-01-10 18:41:03,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:03,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:03,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:03,537 INFO L87 Difference]: Start difference. First operand 41555 states and 67755 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 18:41:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:05,057 INFO L93 Difference]: Finished difference Result 75429 states and 123843 transitions. [2022-01-10 18:41:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-10 18:41:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:05,147 INFO L225 Difference]: With dead ends: 75429 [2022-01-10 18:41:05,147 INFO L226 Difference]: Without dead ends: 51955 [2022-01-10 18:41:05,175 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 18:41:05,176 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 182 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:05,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 1163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51955 states. [2022-01-10 18:41:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51955 to 51953. [2022-01-10 18:41:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51953 states, 51952 states have (on average 1.6319872189713582) internal successors, (84785), 51952 states have internal predecessors, (84785), 0 states have call successors, (0), 0 states 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 18:41:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51953 states to 51953 states and 84785 transitions. [2022-01-10 18:41:07,175 INFO L78 Accepts]: Start accepts. Automaton has 51953 states and 84785 transitions. Word has length 137 [2022-01-10 18:41:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:07,176 INFO L470 AbstractCegarLoop]: Abstraction has 51953 states and 84785 transitions. [2022-01-10 18:41:07,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 18:41:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 51953 states and 84785 transitions. [2022-01-10 18:41:07,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 18:41:07,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:07,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:07,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:41:07,374 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash -457674004, now seen corresponding path program 1 times [2022-01-10 18:41:07,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:07,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176217248] [2022-01-10 18:41:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:07,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:07,690 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 18:41:07,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176217248] [2022-01-10 18:41:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176217248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:07,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:07,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:07,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082895572] [2022-01-10 18:41:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:07,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:07,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:07,692 INFO L87 Difference]: Start difference. First operand 51953 states and 84785 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:41:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:10,454 INFO L93 Difference]: Finished difference Result 148685 states and 242222 transitions. [2022-01-10 18:41:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:10,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-01-10 18:41:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:10,645 INFO L225 Difference]: With dead ends: 148685 [2022-01-10 18:41:10,645 INFO L226 Difference]: Without dead ends: 99179 [2022-01-10 18:41:10,682 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 18:41:10,683 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 372 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:10,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 1492 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99179 states. [2022-01-10 18:41:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99179 to 99177. [2022-01-10 18:41:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99177 states, 99176 states have (on average 1.620452528837622) internal successors, (160710), 99176 states have internal predecessors, (160710), 0 states have call successors, (0), 0 states 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 18:41:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99177 states to 99177 states and 160710 transitions. [2022-01-10 18:41:14,357 INFO L78 Accepts]: Start accepts. Automaton has 99177 states and 160710 transitions. Word has length 138 [2022-01-10 18:41:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:14,357 INFO L470 AbstractCegarLoop]: Abstraction has 99177 states and 160710 transitions. [2022-01-10 18:41:14,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:41:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 99177 states and 160710 transitions. [2022-01-10 18:41:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 18:41:14,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:14,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:14,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:41:14,389 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1108889680, now seen corresponding path program 1 times [2022-01-10 18:41:14,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:14,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481279651] [2022-01-10 18:41:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:14,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:14,530 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 18:41:14,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481279651] [2022-01-10 18:41:14,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481279651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:14,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:14,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:41:14,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105436912] [2022-01-10 18:41:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:14,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:41:14,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:41:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:14,532 INFO L87 Difference]: Start difference. First operand 99177 states and 160710 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:41:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:19,507 INFO L93 Difference]: Finished difference Result 255449 states and 412632 transitions. [2022-01-10 18:41:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:41:19,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-01-10 18:41:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:19,853 INFO L225 Difference]: With dead ends: 255449 [2022-01-10 18:41:19,854 INFO L226 Difference]: Without dead ends: 156832 [2022-01-10 18:41:19,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:41:19,912 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1391 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:19,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2177 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156832 states. [2022-01-10 18:41:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156832 to 100256. [2022-01-10 18:41:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100256 states, 100255 states have (on average 1.620916662510598) internal successors, (162505), 100255 states have internal predecessors, (162505), 0 states have call successors, (0), 0 states 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 18:41:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100256 states to 100256 states and 162505 transitions. [2022-01-10 18:41:24,485 INFO L78 Accepts]: Start accepts. Automaton has 100256 states and 162505 transitions. Word has length 138 [2022-01-10 18:41:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:24,486 INFO L470 AbstractCegarLoop]: Abstraction has 100256 states and 162505 transitions. [2022-01-10 18:41:24,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 18:41:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand 100256 states and 162505 transitions. [2022-01-10 18:41:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 18:41:24,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:24,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:24,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:41:24,512 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1441462213, now seen corresponding path program 1 times [2022-01-10 18:41:24,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689782140] [2022-01-10 18:41:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:24,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:24,554 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 18:41:24,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:24,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689782140] [2022-01-10 18:41:24,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689782140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:24,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:24,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:24,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638671818] [2022-01-10 18:41:24,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:24,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:24,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:24,555 INFO L87 Difference]: Start difference. First operand 100256 states and 162505 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 18:41:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:30,838 INFO L93 Difference]: Finished difference Result 298747 states and 484051 transitions. [2022-01-10 18:41:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:30,839 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 140 [2022-01-10 18:41:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:31,327 INFO L225 Difference]: With dead ends: 298747 [2022-01-10 18:41:31,328 INFO L226 Difference]: Without dead ends: 199548 [2022-01-10 18:41:31,407 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 18:41:31,409 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 474 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:31,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199548 states. [2022-01-10 18:41:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199548 to 100690. [2022-01-10 18:41:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100690 states, 100689 states have (on average 1.6191242340275502) internal successors, (163028), 100689 states have internal predecessors, (163028), 0 states have call successors, (0), 0 states 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 18:41:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100690 states to 100690 states and 163028 transitions. [2022-01-10 18:41:36,284 INFO L78 Accepts]: Start accepts. Automaton has 100690 states and 163028 transitions. Word has length 140 [2022-01-10 18:41:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:36,284 INFO L470 AbstractCegarLoop]: Abstraction has 100690 states and 163028 transitions. [2022-01-10 18:41:36,284 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 18:41:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 100690 states and 163028 transitions. [2022-01-10 18:41:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 18:41:36,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:36,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:36,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:41:36,305 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1570949181, now seen corresponding path program 1 times [2022-01-10 18:41:36,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:36,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657333595] [2022-01-10 18:41:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:36,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:36,405 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 18:41:36,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:36,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657333595] [2022-01-10 18:41:36,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657333595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:36,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:36,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:41:36,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322795481] [2022-01-10 18:41:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:36,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:41:36,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:41:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:41:36,406 INFO L87 Difference]: Start difference. First operand 100690 states and 163028 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 18:41:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:40,700 INFO L93 Difference]: Finished difference Result 203225 states and 328055 transitions. [2022-01-10 18:41:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:41:40,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-01-10 18:41:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:40,912 INFO L225 Difference]: With dead ends: 203225 [2022-01-10 18:41:40,913 INFO L226 Difference]: Without dead ends: 108067 [2022-01-10 18:41:40,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:40,985 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 1176 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:40,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1196 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108067 states. [2022-01-10 18:41:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108067 to 101221. [2022-01-10 18:41:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101221 states, 101220 states have (on average 1.6192550879272871) internal successors, (163901), 101220 states have internal predecessors, (163901), 0 states have call successors, (0), 0 states 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 18:41:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101221 states to 101221 states and 163901 transitions. [2022-01-10 18:41:45,549 INFO L78 Accepts]: Start accepts. Automaton has 101221 states and 163901 transitions. Word has length 141 [2022-01-10 18:41:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:45,550 INFO L470 AbstractCegarLoop]: Abstraction has 101221 states and 163901 transitions. [2022-01-10 18:41:45,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 18:41:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 101221 states and 163901 transitions. [2022-01-10 18:41:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 18:41:45,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:45,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:45,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:41:45,570 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1929579364, now seen corresponding path program 1 times [2022-01-10 18:41:45,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612535054] [2022-01-10 18:41:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:45,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:45,640 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 18:41:45,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612535054] [2022-01-10 18:41:45,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612535054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:45,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:45,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:41:45,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374588613] [2022-01-10 18:41:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:45,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:41:45,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:41:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:41:45,642 INFO L87 Difference]: Start difference. First operand 101221 states and 163901 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)