/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/product-lines/elevator_spec13_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:52:26,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:52:26,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:52:26,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:52:26,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:52:26,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:52:26,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:52:26,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:52:26,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:52:26,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:52:26,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:52:26,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:52:26,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:52:26,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:52:26,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:52:26,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:52:26,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:52:26,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:52:26,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:52:26,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:52:26,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:52:26,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:52:26,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:52:26,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:52:26,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:52:26,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:52:26,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:52:26,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:52:26,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:52:26,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:52:26,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:52:26,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:52:26,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:52:26,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:52:26,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:52:26,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:52:26,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:52:26,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:52:26,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:52:26,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:52:26,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:52:26,965 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 17:52:26,995 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:52:26,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:52:26,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:52:26,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:52:26,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:52:26,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:52:26,997 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:52:26,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:52:26,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:52:26,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:52:26,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:52:26,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:52:26,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:52:26,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:52:26,999 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:52:26,999 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:52:26,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:52:26,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:52:26,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:52:27,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:52:27,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:52:27,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:52:27,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:52:27,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:52:27,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:52:27,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:52:27,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:52:27,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:52:27,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:52:27,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:52:27,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:52:27,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:52:27,003 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:52:27,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:52:27,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:52:27,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:52:27,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:52:27,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:52:27,243 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:52:27,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2022-01-10 17:52:27,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50545fcd8/4e2b3cceec6a47c9941dbc02578a39d3/FLAG55ff8805b [2022-01-10 17:52:27,829 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:52:27,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2022-01-10 17:52:27,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50545fcd8/4e2b3cceec6a47c9941dbc02578a39d3/FLAG55ff8805b [2022-01-10 17:52:28,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50545fcd8/4e2b3cceec6a47c9941dbc02578a39d3 [2022-01-10 17:52:28,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:52:28,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:52:28,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:52:28,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:52:28,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:52:28,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:28,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3104dd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28, skipping insertion in model container [2022-01-10 17:52:28,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:28,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:52:28,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:52:28,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2022-01-10 17:52:28,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:52:28,605 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:52:28,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:52:28,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2022-01-10 17:52:28,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:52:28,723 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:52:28,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2022-01-10 17:52:28,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:52:28,829 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:52:28,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28 WrapperNode [2022-01-10 17:52:28,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:52:28,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:52:28,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:52:28,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:52:28,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:28,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,263 INFO L137 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 193, calls inlined = 975, statements flattened = 34881 [2022-01-10 17:52:29,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:52:29,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:52:29,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:52:29,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:52:29,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:52:29,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:52:29,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:52:29,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:52:29,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (1/1) ... [2022-01-10 17:52:29,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:52:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:52:29,916 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 17:52:29,928 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 17:52:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:52:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:52:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:52:29,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:52:30,136 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:52:30,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:52:41,855 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:52:41,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:52:41,908 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2022-01-10 17:52:41,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:52:41 BoogieIcfgContainer [2022-01-10 17:52:41,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:52:41,919 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:52:41,919 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:52:41,921 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:52:41,923 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:52:41" (1/1) ... [2022-01-10 17:52:44,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:52:44 BasicIcfg [2022-01-10 17:52:44,057 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:52:44,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:52:44,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:52:44,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:52:44,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:52:28" (1/4) ... [2022-01-10 17:52:44,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbf26a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:52:44, skipping insertion in model container [2022-01-10 17:52:44,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:52:28" (2/4) ... [2022-01-10 17:52:44,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbf26a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:52:44, skipping insertion in model container [2022-01-10 17:52:44,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:52:41" (3/4) ... [2022-01-10 17:52:44,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbf26a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:52:44, skipping insertion in model container [2022-01-10 17:52:44,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:52:44" (4/4) ... [2022-01-10 17:52:44,065 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.cTransformedIcfg [2022-01-10 17:52:44,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:52:44,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 17:52:44,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:52:44,144 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 17:52:44,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 17:52:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 9462 states, 9451 states have (on average 1.8807533594328643) internal successors, (17775), 9461 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states 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 17:52:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 17:52:44,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:44,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:44,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1784916724, now seen corresponding path program 1 times [2022-01-10 17:52:44,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:44,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411759562] [2022-01-10 17:52:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:44,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:44,680 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 17:52:44,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:44,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411759562] [2022-01-10 17:52:44,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411759562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:44,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:44,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:44,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279164428] [2022-01-10 17:52:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:44,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:44,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:44,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:44,733 INFO L87 Difference]: Start difference. First operand has 9462 states, 9451 states have (on average 1.8807533594328643) internal successors, (17775), 9461 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:45,528 INFO L93 Difference]: Finished difference Result 22696 states and 42648 transitions. [2022-01-10 17:52:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 17:52:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:45,630 INFO L225 Difference]: With dead ends: 22696 [2022-01-10 17:52:45,630 INFO L226 Difference]: Without dead ends: 13233 [2022-01-10 17:52:45,652 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 17:52:45,655 INFO L933 BasicCegarLoop]: 24673 mSDtfsCounter, 17619 mSDsluCounter, 7081 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17619 SdHoareTripleChecker+Valid, 31754 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:45,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17619 Valid, 31754 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13233 states. [2022-01-10 17:52:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13233 to 9445. [2022-01-10 17:52:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 9435 states have (on average 1.867620561738209) internal successors, (17621), 9444 states have internal predecessors, (17621), 0 states have call successors, (0), 0 states 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 17:52:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 17621 transitions. [2022-01-10 17:52:46,056 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 17621 transitions. Word has length 63 [2022-01-10 17:52:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:46,056 INFO L470 AbstractCegarLoop]: Abstraction has 9445 states and 17621 transitions. [2022-01-10 17:52:46,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 17621 transitions. [2022-01-10 17:52:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:52:46,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:46,064 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] [2022-01-10 17:52:46,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:52:46,065 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash -696645092, now seen corresponding path program 1 times [2022-01-10 17:52:46,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370696696] [2022-01-10 17:52:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:46,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:46,186 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 17:52:46,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:46,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370696696] [2022-01-10 17:52:46,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370696696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:46,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:46,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:46,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148034293] [2022-01-10 17:52:46,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:46,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:46,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:46,190 INFO L87 Difference]: Start difference. First operand 9445 states and 17621 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 17:52:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:46,699 INFO L93 Difference]: Finished difference Result 22593 states and 42147 transitions. [2022-01-10 17:52:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 17:52:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:46,858 INFO L225 Difference]: With dead ends: 22593 [2022-01-10 17:52:46,858 INFO L226 Difference]: Without dead ends: 13197 [2022-01-10 17:52:46,874 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 17:52:46,875 INFO L933 BasicCegarLoop]: 24445 mSDtfsCounter, 17569 mSDsluCounter, 7022 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17569 SdHoareTripleChecker+Valid, 31467 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:46,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17569 Valid, 31467 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:52:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13197 states. [2022-01-10 17:52:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13197 to 9445. [2022-01-10 17:52:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 9435 states have (on average 1.8665606783253843) internal successors, (17611), 9444 states have internal predecessors, (17611), 0 states have call successors, (0), 0 states 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 17:52:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 17611 transitions. [2022-01-10 17:52:47,215 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 17611 transitions. Word has length 65 [2022-01-10 17:52:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:47,216 INFO L470 AbstractCegarLoop]: Abstraction has 9445 states and 17611 transitions. [2022-01-10 17:52:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 17:52:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 17611 transitions. [2022-01-10 17:52:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 17:52:47,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:47,230 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] [2022-01-10 17:52:47,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:52:47,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1959761743, now seen corresponding path program 1 times [2022-01-10 17:52:47,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:47,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927267580] [2022-01-10 17:52:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:47,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:47,327 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 17:52:47,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:47,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927267580] [2022-01-10 17:52:47,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927267580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:47,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:47,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:47,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401739518] [2022-01-10 17:52:47,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:47,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:47,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:47,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:47,330 INFO L87 Difference]: Start difference. First operand 9445 states and 17611 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 17:52:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:47,711 INFO L93 Difference]: Finished difference Result 22659 states and 42258 transitions. [2022-01-10 17:52:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:47,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 17:52:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:47,749 INFO L225 Difference]: With dead ends: 22659 [2022-01-10 17:52:47,749 INFO L226 Difference]: Without dead ends: 13278 [2022-01-10 17:52:47,776 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 17:52:47,779 INFO L933 BasicCegarLoop]: 24745 mSDtfsCounter, 17577 mSDsluCounter, 7150 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17577 SdHoareTripleChecker+Valid, 31895 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:47,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17577 Valid, 31895 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:52:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13278 states. [2022-01-10 17:52:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13278 to 9445. [2022-01-10 17:52:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 9435 states have (on average 1.8664546899841017) internal successors, (17610), 9444 states have internal predecessors, (17610), 0 states have call successors, (0), 0 states 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 17:52:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 17610 transitions. [2022-01-10 17:52:48,112 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 17610 transitions. Word has length 67 [2022-01-10 17:52:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:48,113 INFO L470 AbstractCegarLoop]: Abstraction has 9445 states and 17610 transitions. [2022-01-10 17:52:48,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 17:52:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 17610 transitions. [2022-01-10 17:52:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 17:52:48,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:48,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:48,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:52:48,119 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash -456642388, now seen corresponding path program 1 times [2022-01-10 17:52:48,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:48,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106350450] [2022-01-10 17:52:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:48,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:48,214 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 17:52:48,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:48,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106350450] [2022-01-10 17:52:48,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106350450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:48,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:48,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:52:48,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52915644] [2022-01-10 17:52:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:48,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:48,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:48,216 INFO L87 Difference]: Start difference. First operand 9445 states and 17610 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:48,688 INFO L93 Difference]: Finished difference Result 22558 states and 42065 transitions. [2022-01-10 17:52:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 17:52:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:48,720 INFO L225 Difference]: With dead ends: 22558 [2022-01-10 17:52:48,721 INFO L226 Difference]: Without dead ends: 13213 [2022-01-10 17:52:48,738 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 17:52:48,739 INFO L933 BasicCegarLoop]: 24574 mSDtfsCounter, 17447 mSDsluCounter, 7056 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17447 SdHoareTripleChecker+Valid, 31630 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:48,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17447 Valid, 31630 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:52:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13213 states. [2022-01-10 17:52:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13213 to 9445. [2022-01-10 17:52:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 9435 states have (on average 1.8659247482776895) internal successors, (17605), 9444 states have internal predecessors, (17605), 0 states have call successors, (0), 0 states 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 17:52:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 17605 transitions. [2022-01-10 17:52:48,970 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 17605 transitions. Word has length 68 [2022-01-10 17:52:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:48,970 INFO L470 AbstractCegarLoop]: Abstraction has 9445 states and 17605 transitions. [2022-01-10 17:52:48,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 17605 transitions. [2022-01-10 17:52:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 17:52:48,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:48,975 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] [2022-01-10 17:52:48,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:52:48,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash -162717542, now seen corresponding path program 1 times [2022-01-10 17:52:48,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957686684] [2022-01-10 17:52:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:48,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:49,037 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 17:52:49,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:49,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957686684] [2022-01-10 17:52:49,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957686684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:49,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:49,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:52:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663805192] [2022-01-10 17:52:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:49,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:49,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:49,039 INFO L87 Difference]: Start difference. First operand 9445 states and 17605 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 17:52:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:49,830 INFO L93 Difference]: Finished difference Result 26034 states and 48538 transitions. [2022-01-10 17:52:49,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:49,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 17:52:49,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:49,874 INFO L225 Difference]: With dead ends: 26034 [2022-01-10 17:52:49,874 INFO L226 Difference]: Without dead ends: 17604 [2022-01-10 17:52:49,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:49,894 INFO L933 BasicCegarLoop]: 18310 mSDtfsCounter, 17388 mSDsluCounter, 14948 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17388 SdHoareTripleChecker+Valid, 33258 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:49,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17388 Valid, 33258 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:52:49,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17604 states. [2022-01-10 17:52:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17604 to 17584. [2022-01-10 17:52:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17584 states, 17574 states have (on average 1.8602480937748946) internal successors, (32692), 17583 states have internal predecessors, (32692), 0 states have call successors, (0), 0 states 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 17:52:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17584 states to 17584 states and 32692 transitions. [2022-01-10 17:52:50,379 INFO L78 Accepts]: Start accepts. Automaton has 17584 states and 32692 transitions. Word has length 69 [2022-01-10 17:52:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:50,381 INFO L470 AbstractCegarLoop]: Abstraction has 17584 states and 32692 transitions. [2022-01-10 17:52:50,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 17:52:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 17584 states and 32692 transitions. [2022-01-10 17:52:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:52:50,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:50,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:50,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:52:50,390 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash -719507187, now seen corresponding path program 1 times [2022-01-10 17:52:50,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:50,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069430075] [2022-01-10 17:52:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:50,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:50,482 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 17:52:50,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069430075] [2022-01-10 17:52:50,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069430075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:50,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:50,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:52:50,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725813523] [2022-01-10 17:52:50,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:50,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:50,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:50,485 INFO L87 Difference]: Start difference. First operand 17584 states and 32692 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:51,489 INFO L93 Difference]: Finished difference Result 49707 states and 92416 transitions. [2022-01-10 17:52:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:51,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:52:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:51,615 INFO L225 Difference]: With dead ends: 49707 [2022-01-10 17:52:51,615 INFO L226 Difference]: Without dead ends: 33788 [2022-01-10 17:52:51,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:51,655 INFO L933 BasicCegarLoop]: 17456 mSDtfsCounter, 17373 mSDsluCounter, 14979 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17373 SdHoareTripleChecker+Valid, 32435 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:51,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17373 Valid, 32435 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:52:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33788 states. [2022-01-10 17:52:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33788 to 33768. [2022-01-10 17:52:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33768 states, 33758 states have (on average 1.8547899757094615) internal successors, (62614), 33767 states have internal predecessors, (62614), 0 states have call successors, (0), 0 states 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 17:52:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33768 states to 33768 states and 62614 transitions. [2022-01-10 17:52:52,688 INFO L78 Accepts]: Start accepts. Automaton has 33768 states and 62614 transitions. Word has length 70 [2022-01-10 17:52:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:52,689 INFO L470 AbstractCegarLoop]: Abstraction has 33768 states and 62614 transitions. [2022-01-10 17:52:52,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 33768 states and 62614 transitions. [2022-01-10 17:52:52,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:52:52,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:52,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:52,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:52:52,694 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:52,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1345144057, now seen corresponding path program 1 times [2022-01-10 17:52:52,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:52,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155100143] [2022-01-10 17:52:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:52,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:52,764 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 17:52:52,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:52,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155100143] [2022-01-10 17:52:52,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155100143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:52,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:52,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:52:52,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957789574] [2022-01-10 17:52:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:52,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:52,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:52,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:52,766 INFO L87 Difference]: Start difference. First operand 33768 states and 62614 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:54,137 INFO L93 Difference]: Finished difference Result 96865 states and 179587 transitions. [2022-01-10 17:52:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:54,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:52:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:54,277 INFO L225 Difference]: With dead ends: 96865 [2022-01-10 17:52:54,278 INFO L226 Difference]: Without dead ends: 65952 [2022-01-10 17:52:54,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:54,327 INFO L933 BasicCegarLoop]: 17442 mSDtfsCounter, 17358 mSDsluCounter, 15010 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17358 SdHoareTripleChecker+Valid, 32452 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:54,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17358 Valid, 32452 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:52:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65952 states. [2022-01-10 17:52:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65952 to 65932. [2022-01-10 17:52:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65932 states, 65922 states have (on average 1.8492915870270927) internal successors, (121909), 65931 states have internal predecessors, (121909), 0 states have call successors, (0), 0 states 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 17:52:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65932 states to 65932 states and 121909 transitions. [2022-01-10 17:52:55,725 INFO L78 Accepts]: Start accepts. Automaton has 65932 states and 121909 transitions. Word has length 71 [2022-01-10 17:52:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:55,725 INFO L470 AbstractCegarLoop]: Abstraction has 65932 states and 121909 transitions. [2022-01-10 17:52:55,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:55,726 INFO L276 IsEmpty]: Start isEmpty. Operand 65932 states and 121909 transitions. [2022-01-10 17:52:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:52:55,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:55,729 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] [2022-01-10 17:52:55,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:52:55,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:52:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1593233421, now seen corresponding path program 1 times [2022-01-10 17:52:55,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:55,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547920657] [2022-01-10 17:52:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:55,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:56,010 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 17:52:56,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:56,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547920657] [2022-01-10 17:52:56,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547920657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:56,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:52:56,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:52:56,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134132363] [2022-01-10 17:52:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:56,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:52:56,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:52:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:56,012 INFO L87 Difference]: Start difference. First operand 65932 states and 121909 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 17:52:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:57,912 INFO L93 Difference]: Finished difference Result 190773 states and 352666 transitions. [2022-01-10 17:52:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:52:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 17:52:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:58,165 INFO L225 Difference]: With dead ends: 190773 [2022-01-10 17:52:58,165 INFO L226 Difference]: Without dead ends: 129856 [2022-01-10 17:52:58,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:52:58,232 INFO L933 BasicCegarLoop]: 17428 mSDtfsCounter, 17343 mSDsluCounter, 15041 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17343 SdHoareTripleChecker+Valid, 32469 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:58,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17343 Valid, 32469 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:52:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129856 states. [2022-01-10 17:53:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129856 to 129836. [2022-01-10 17:53:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129836 states, 129826 states have (on average 1.8436676782770784) internal successors, (239356), 129835 states have internal predecessors, (239356), 0 states have call successors, (0), 0 states 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 17:53:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129836 states to 129836 states and 239356 transitions. [2022-01-10 17:53:00,885 INFO L78 Accepts]: Start accepts. Automaton has 129836 states and 239356 transitions. Word has length 72 [2022-01-10 17:53:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:00,885 INFO L470 AbstractCegarLoop]: Abstraction has 129836 states and 239356 transitions. [2022-01-10 17:53:00,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 17:53:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 129836 states and 239356 transitions. [2022-01-10 17:53:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:53:00,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:00,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:00,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:53:00,890 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1019913596, now seen corresponding path program 1 times [2022-01-10 17:53:00,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:00,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678753582] [2022-01-10 17:53:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:00,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:00,953 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 17:53:00,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:00,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678753582] [2022-01-10 17:53:00,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678753582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:00,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:00,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:53:00,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357564608] [2022-01-10 17:53:00,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:00,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:53:00,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:53:00,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:00,955 INFO L87 Difference]: Start difference. First operand 129836 states and 239356 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:04,247 INFO L93 Difference]: Finished difference Result 357978 states and 662143 transitions. [2022-01-10 17:53:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:53:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 17:53:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:04,881 INFO L225 Difference]: With dead ends: 357978 [2022-01-10 17:53:04,882 INFO L226 Difference]: Without dead ends: 238006 [2022-01-10 17:53:04,984 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 17:53:04,985 INFO L933 BasicCegarLoop]: 30297 mSDtfsCounter, 13669 mSDsluCounter, 16574 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13669 SdHoareTripleChecker+Valid, 46871 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:04,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13669 Valid, 46871 Invalid, 102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:53:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238006 states. [2022-01-10 17:53:07,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238006 to 127756. [2022-01-10 17:53:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127756 states, 127746 states have (on average 1.8436271977204766) internal successors, (235516), 127755 states have internal predecessors, (235516), 0 states have call successors, (0), 0 states 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 17:53:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127756 states to 127756 states and 235516 transitions. [2022-01-10 17:53:08,298 INFO L78 Accepts]: Start accepts. Automaton has 127756 states and 235516 transitions. Word has length 73 [2022-01-10 17:53:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:08,298 INFO L470 AbstractCegarLoop]: Abstraction has 127756 states and 235516 transitions. [2022-01-10 17:53:08,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 127756 states and 235516 transitions. [2022-01-10 17:53:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 17:53:08,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:08,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:08,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:53:08,304 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 26005430, now seen corresponding path program 1 times [2022-01-10 17:53:08,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:08,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959864399] [2022-01-10 17:53:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:08,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:53:08,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959864399] [2022-01-10 17:53:08,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959864399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:08,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:08,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:53:08,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171011475] [2022-01-10 17:53:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:08,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:53:08,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:53:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:08,647 INFO L87 Difference]: Start difference. First operand 127756 states and 235516 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:14,019 INFO L93 Difference]: Finished difference Result 465290 states and 861961 transitions. [2022-01-10 17:53:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:53:14,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 17:53:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:14,942 INFO L225 Difference]: With dead ends: 465290 [2022-01-10 17:53:14,942 INFO L226 Difference]: Without dead ends: 347606 [2022-01-10 17:53:15,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:15,089 INFO L933 BasicCegarLoop]: 30257 mSDtfsCounter, 26946 mSDsluCounter, 45813 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26946 SdHoareTripleChecker+Valid, 76070 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:15,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26946 Valid, 76070 Invalid, 111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:53:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347606 states. [2022-01-10 17:53:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347606 to 127756. [2022-01-10 17:53:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127756 states, 127746 states have (on average 1.8423747123197596) internal successors, (235356), 127755 states have internal predecessors, (235356), 0 states have call successors, (0), 0 states 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 17:53:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127756 states to 127756 states and 235356 transitions. [2022-01-10 17:53:19,565 INFO L78 Accepts]: Start accepts. Automaton has 127756 states and 235356 transitions. Word has length 75 [2022-01-10 17:53:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:53:19,566 INFO L470 AbstractCegarLoop]: Abstraction has 127756 states and 235356 transitions. [2022-01-10 17:53:19,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 127756 states and 235356 transitions. [2022-01-10 17:53:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 17:53:19,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:19,570 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] [2022-01-10 17:53:19,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:53:19,570 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:53:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 821678762, now seen corresponding path program 1 times [2022-01-10 17:53:19,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:19,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820231771] [2022-01-10 17:53:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:19,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:19,648 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 17:53:19,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:19,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820231771] [2022-01-10 17:53:19,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820231771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:19,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:19,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:53:19,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209149479] [2022-01-10 17:53:19,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:19,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:53:19,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:53:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:53:19,651 INFO L87 Difference]: Start difference. First operand 127756 states and 235356 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)