/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:48:24,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:48:24,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:48:24,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:48:24,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:48:24,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:48:24,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:48:24,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:48:24,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:48:24,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:48:24,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:48:24,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:48:24,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:48:24,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:48:24,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:48:24,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:48:24,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:48:24,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:48:24,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:48:24,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:48:24,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:48:24,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:48:24,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:48:24,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:48:24,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:48:24,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:48:24,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:48:24,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:48:24,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:48:24,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:48:24,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:48:24,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:48:24,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:48:24,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:48:24,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:48:24,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:48:24,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:48:24,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:48:24,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:48:24,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:48:24,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:48:24,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:48:24,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:48:24,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:48:24,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:48:24,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:48:24,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:48:24,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:48:24,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:48:24,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:48:24,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:48:24,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:48:24,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:48:24,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:48:24,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:48:24,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:48:24,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:48:24,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:48:24,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:48:24,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:48:24,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:48:24,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:48:24,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:48:24,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:48:24,177 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:48:24,177 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:48:24,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:48:24,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:48:24,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:48:24,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:48:24,408 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:48:24,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c [2022-01-10 23:48:24,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9277dcb9f/308d6875d9d8450587cbfb7e32d399ff/FLAG1d9ced611 [2022-01-10 23:48:24,958 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:48:24,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c [2022-01-10 23:48:24,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9277dcb9f/308d6875d9d8450587cbfb7e32d399ff/FLAG1d9ced611 [2022-01-10 23:48:25,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9277dcb9f/308d6875d9d8450587cbfb7e32d399ff [2022-01-10 23:48:25,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:48:25,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:48:25,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:48:25,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:48:25,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:48:25,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:25" (1/1) ... [2022-01-10 23:48:25,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3f3559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:25, skipping insertion in model container [2022-01-10 23:48:25,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:25" (1/1) ... [2022-01-10 23:48:25,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:48:25,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:48:25,907 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_spec9_product11.cil.c[71954,71967] [2022-01-10 23:48:25,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:48:25,936 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:48:25,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:48:26,014 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_spec9_product11.cil.c[71954,71967] [2022-01-10 23:48:26,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:48:26,018 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:48:26,091 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_spec9_product11.cil.c[71954,71967] [2022-01-10 23:48:26,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:48:26,111 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:48:26,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26 WrapperNode [2022-01-10 23:48:26,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:48:26,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:48:26,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:48:26,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:48:26,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,295 INFO L137 Inliner]: procedures = 95, calls = 335, calls flagged for inlining = 188, calls inlined = 276, statements flattened = 8618 [2022-01-10 23:48:26,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:48:26,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:48:26,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:48:26,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:48:26,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:48:26,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:48:26,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:48:26,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:48:26,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (1/1) ... [2022-01-10 23:48:26,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:48:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:48:26,508 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 23:48:26,526 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 23:48:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:48:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:48:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:48:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:48:26,726 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:48:26,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:48:29,447 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:48:29,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:48:29,462 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:48:29,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:29 BoogieIcfgContainer [2022-01-10 23:48:29,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:48:29,465 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:48:29,465 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:48:29,466 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:48:29,468 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:29" (1/1) ... [2022-01-10 23:48:29,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:29 BasicIcfg [2022-01-10 23:48:29,961 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:48:29,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:48:29,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:48:29,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:48:29,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:48:25" (1/4) ... [2022-01-10 23:48:29,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91e9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:29, skipping insertion in model container [2022-01-10 23:48:29,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:26" (2/4) ... [2022-01-10 23:48:29,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91e9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:29, skipping insertion in model container [2022-01-10 23:48:29,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:29" (3/4) ... [2022-01-10 23:48:29,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91e9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:48:29, skipping insertion in model container [2022-01-10 23:48:29,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:29" (4/4) ... [2022-01-10 23:48:29,965 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product11.cil.cTransformedIcfg [2022-01-10 23:48:29,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:48:29,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 23:48:29,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:48:30,004 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 23:48:30,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 23:48:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 2484 states, 2478 states have (on average 1.8696529459241324) internal successors, (4633), 2483 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states 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 23:48:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 23:48:30,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:30,045 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] [2022-01-10 23:48:30,046 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1399177055, now seen corresponding path program 1 times [2022-01-10 23:48:30,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:30,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185872423] [2022-01-10 23:48:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:30,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:30,342 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 23:48:30,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:30,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185872423] [2022-01-10 23:48:30,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185872423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:30,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:30,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:48:30,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300663611] [2022-01-10 23:48:30,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:30,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:30,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:30,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:30,400 INFO L87 Difference]: Start difference. First operand has 2484 states, 2478 states have (on average 1.8696529459241324) internal successors, (4633), 2483 states have internal predecessors, (4633), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 23:48:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:30,695 INFO L93 Difference]: Finished difference Result 4953 states and 9243 transitions. [2022-01-10 23:48:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:30,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 23:48:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:30,720 INFO L225 Difference]: With dead ends: 4953 [2022-01-10 23:48:30,720 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 23:48:30,728 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 23:48:30,732 INFO L933 BasicCegarLoop]: 4612 mSDtfsCounter, 4607 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 4623 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:30,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4607 Valid, 4623 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:48:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 23:48:30,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 23:48:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2468 states have (on average 1.8675040518638575) internal successors, (4609), 2472 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states 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 23:48:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4609 transitions. [2022-01-10 23:48:30,833 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4609 transitions. Word has length 50 [2022-01-10 23:48:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:30,834 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4609 transitions. [2022-01-10 23:48:30,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 23:48:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4609 transitions. [2022-01-10 23:48:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 23:48:30,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:30,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:48:30,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:48:30,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash -804820186, now seen corresponding path program 1 times [2022-01-10 23:48:30,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:30,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900327382] [2022-01-10 23:48:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:30,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:30,947 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 23:48:30,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:30,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900327382] [2022-01-10 23:48:30,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900327382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:30,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:30,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:48:30,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895191985] [2022-01-10 23:48:30,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:30,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:30,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:30,950 INFO L87 Difference]: Start difference. First operand 2473 states and 4609 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:31,119 INFO L93 Difference]: Finished difference Result 4896 states and 9132 transitions. [2022-01-10 23:48:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:31,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 23:48:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:31,128 INFO L225 Difference]: With dead ends: 4896 [2022-01-10 23:48:31,128 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 23:48:31,132 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 23:48:31,133 INFO L933 BasicCegarLoop]: 4549 mSDtfsCounter, 4567 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 4564 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:31,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4567 Valid, 4564 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:48:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 23:48:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 23:48:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2468 states have (on average 1.8573743922204213) internal successors, (4584), 2472 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states 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 23:48:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4584 transitions. [2022-01-10 23:48:31,178 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4584 transitions. Word has length 57 [2022-01-10 23:48:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:31,179 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4584 transitions. [2022-01-10 23:48:31,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4584 transitions. [2022-01-10 23:48:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:48:31,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:31,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:48:31,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:48:31,189 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1644017253, now seen corresponding path program 1 times [2022-01-10 23:48:31,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:31,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766474943] [2022-01-10 23:48:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:31,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:31,284 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 23:48:31,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:31,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766474943] [2022-01-10 23:48:31,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766474943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:31,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:31,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:48:31,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188935090] [2022-01-10 23:48:31,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:31,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:31,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:31,287 INFO L87 Difference]: Start difference. First operand 2473 states and 4584 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:31,439 INFO L93 Difference]: Finished difference Result 6329 states and 11798 transitions. [2022-01-10 23:48:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 23:48:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:31,453 INFO L225 Difference]: With dead ends: 6329 [2022-01-10 23:48:31,453 INFO L226 Difference]: Without dead ends: 4254 [2022-01-10 23:48:31,460 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 23:48:31,463 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4428 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4428 SdHoareTripleChecker+Valid, 7899 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:31,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4428 Valid, 7899 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:48:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2022-01-10 23:48:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 4237. [2022-01-10 23:48:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4232 states have (on average 1.8631852551984878) internal successors, (7885), 4236 states have internal predecessors, (7885), 0 states have call successors, (0), 0 states 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 23:48:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 7885 transitions. [2022-01-10 23:48:31,593 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 7885 transitions. Word has length 60 [2022-01-10 23:48:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:31,593 INFO L470 AbstractCegarLoop]: Abstraction has 4237 states and 7885 transitions. [2022-01-10 23:48:31,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 7885 transitions. [2022-01-10 23:48:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:48:31,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:31,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:48:31,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:48:31,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:31,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:31,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1877533096, now seen corresponding path program 1 times [2022-01-10 23:48:31,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:31,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974413146] [2022-01-10 23:48:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:31,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:31,684 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 23:48:31,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:31,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974413146] [2022-01-10 23:48:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974413146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:31,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:31,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:48:31,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027221536] [2022-01-10 23:48:31,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:31,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:31,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:31,687 INFO L87 Difference]: Start difference. First operand 4237 states and 7885 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:31,914 INFO L93 Difference]: Finished difference Result 11522 states and 21518 transitions. [2022-01-10 23:48:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:31,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:48:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:31,942 INFO L225 Difference]: With dead ends: 11522 [2022-01-10 23:48:31,942 INFO L226 Difference]: Without dead ends: 7684 [2022-01-10 23:48:31,949 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 23:48:31,956 INFO L933 BasicCegarLoop]: 4487 mSDtfsCounter, 4380 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4380 SdHoareTripleChecker+Valid, 7855 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:31,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4380 Valid, 7855 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:48:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7684 states. [2022-01-10 23:48:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7684 to 7667. [2022-01-10 23:48:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7667 states, 7662 states have (on average 1.8659618898459933) internal successors, (14297), 7666 states have internal predecessors, (14297), 0 states have call successors, (0), 0 states 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 23:48:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7667 states to 7667 states and 14297 transitions. [2022-01-10 23:48:32,249 INFO L78 Accepts]: Start accepts. Automaton has 7667 states and 14297 transitions. Word has length 61 [2022-01-10 23:48:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:32,249 INFO L470 AbstractCegarLoop]: Abstraction has 7667 states and 14297 transitions. [2022-01-10 23:48:32,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7667 states and 14297 transitions. [2022-01-10 23:48:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:48:32,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:32,251 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] [2022-01-10 23:48:32,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:48:32,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:32,252 INFO L85 PathProgramCache]: Analyzing trace with hash -855230213, now seen corresponding path program 1 times [2022-01-10 23:48:32,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:32,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532094685] [2022-01-10 23:48:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:32,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:32,302 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 23:48:32,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:32,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532094685] [2022-01-10 23:48:32,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532094685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:32,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:32,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:48:32,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122634838] [2022-01-10 23:48:32,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:32,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:32,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:32,304 INFO L87 Difference]: Start difference. First operand 7667 states and 14297 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 23:48:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:32,574 INFO L93 Difference]: Finished difference Result 21591 states and 40336 transitions. [2022-01-10 23:48:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:32,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 23:48:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:32,620 INFO L225 Difference]: With dead ends: 21591 [2022-01-10 23:48:32,621 INFO L226 Difference]: Without dead ends: 14324 [2022-01-10 23:48:32,635 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 23:48:32,636 INFO L933 BasicCegarLoop]: 4443 mSDtfsCounter, 4334 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 7811 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:32,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4334 Valid, 7811 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:48:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14324 states. [2022-01-10 23:48:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14324 to 14307. [2022-01-10 23:48:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 14302 states have (on average 1.865962802405258) internal successors, (26687), 14306 states have internal predecessors, (26687), 0 states have call successors, (0), 0 states 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 23:48:33,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 26687 transitions. [2022-01-10 23:48:33,061 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 26687 transitions. Word has length 62 [2022-01-10 23:48:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:33,062 INFO L470 AbstractCegarLoop]: Abstraction has 14307 states and 26687 transitions. [2022-01-10 23:48:33,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 23:48:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 26687 transitions. [2022-01-10 23:48:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:48:33,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:33,065 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 23:48:33,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:48:33,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:33,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 959078388, now seen corresponding path program 1 times [2022-01-10 23:48:33,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:33,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242872018] [2022-01-10 23:48:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:33,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:33,123 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 23:48:33,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242872018] [2022-01-10 23:48:33,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242872018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:33,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:33,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:48:33,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673364128] [2022-01-10 23:48:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:33,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:33,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:33,124 INFO L87 Difference]: Start difference. First operand 14307 states and 26687 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 23:48:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:33,557 INFO L93 Difference]: Finished difference Result 41046 states and 76620 transitions. [2022-01-10 23:48:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 23:48:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:33,617 INFO L225 Difference]: With dead ends: 41046 [2022-01-10 23:48:33,617 INFO L226 Difference]: Without dead ends: 27140 [2022-01-10 23:48:33,643 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 23:48:33,643 INFO L933 BasicCegarLoop]: 4400 mSDtfsCounter, 4290 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:33,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4290 Valid, 7768 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:48:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27140 states. [2022-01-10 23:48:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27140 to 27123. [2022-01-10 23:48:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27123 states, 27118 states have (on average 1.8639648941662363) internal successors, (50547), 27122 states have internal predecessors, (50547), 0 states have call successors, (0), 0 states 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 23:48:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27123 states to 27123 states and 50547 transitions. [2022-01-10 23:48:34,365 INFO L78 Accepts]: Start accepts. Automaton has 27123 states and 50547 transitions. Word has length 63 [2022-01-10 23:48:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:34,365 INFO L470 AbstractCegarLoop]: Abstraction has 27123 states and 50547 transitions. [2022-01-10 23:48:34,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 23:48:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 27123 states and 50547 transitions. [2022-01-10 23:48:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:48:34,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:34,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:48:34,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:48:34,367 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1943008628, now seen corresponding path program 1 times [2022-01-10 23:48:34,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:34,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033831607] [2022-01-10 23:48:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:34,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:34,445 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 23:48:34,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:34,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033831607] [2022-01-10 23:48:34,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033831607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:34,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:34,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:48:34,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198655368] [2022-01-10 23:48:34,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:34,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:34,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:34,447 INFO L87 Difference]: Start difference. First operand 27123 states and 50547 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:35,393 INFO L93 Difference]: Finished difference Result 78541 states and 146380 transitions. [2022-01-10 23:48:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:35,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:48:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:35,595 INFO L225 Difference]: With dead ends: 78541 [2022-01-10 23:48:35,595 INFO L226 Difference]: Without dead ends: 51820 [2022-01-10 23:48:35,627 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 23:48:35,628 INFO L933 BasicCegarLoop]: 4359 mSDtfsCounter, 4248 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 7727 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:35,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4248 Valid, 7727 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:48:35,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51820 states. [2022-01-10 23:48:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51820 to 51803. [2022-01-10 23:48:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51803 states, 51798 states have (on average 1.8606316846210278) internal successors, (96377), 51802 states have internal predecessors, (96377), 0 states have call successors, (0), 0 states 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 23:48:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51803 states to 51803 states and 96377 transitions. [2022-01-10 23:48:37,071 INFO L78 Accepts]: Start accepts. Automaton has 51803 states and 96377 transitions. Word has length 64 [2022-01-10 23:48:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:37,072 INFO L470 AbstractCegarLoop]: Abstraction has 51803 states and 96377 transitions. [2022-01-10 23:48:37,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 51803 states and 96377 transitions. [2022-01-10 23:48:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:48:37,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:37,088 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 23:48:37,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:48:37,089 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash -694540248, now seen corresponding path program 1 times [2022-01-10 23:48:37,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:37,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409597193] [2022-01-10 23:48:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:37,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:37,167 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 23:48:37,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:37,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409597193] [2022-01-10 23:48:37,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409597193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:37,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:37,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:48:37,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145284872] [2022-01-10 23:48:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:37,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:37,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:37,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:37,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:37,169 INFO L87 Difference]: Start difference. First operand 51803 states and 96377 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 23:48:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:38,942 INFO L93 Difference]: Finished difference Result 150652 states and 280184 transitions. [2022-01-10 23:48:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:38,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 23:48:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:39,222 INFO L225 Difference]: With dead ends: 150652 [2022-01-10 23:48:39,223 INFO L226 Difference]: Without dead ends: 99252 [2022-01-10 23:48:39,283 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 23:48:39,284 INFO L933 BasicCegarLoop]: 4320 mSDtfsCounter, 4208 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 7688 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:39,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4208 Valid, 7688 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:48:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99252 states. [2022-01-10 23:48:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99252 to 99235. [2022-01-10 23:48:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99235 states, 99230 states have (on average 1.8563841580167288) internal successors, (184209), 99234 states have internal predecessors, (184209), 0 states have call successors, (0), 0 states 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 23:48:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99235 states to 99235 states and 184209 transitions. [2022-01-10 23:48:42,177 INFO L78 Accepts]: Start accepts. Automaton has 99235 states and 184209 transitions. Word has length 65 [2022-01-10 23:48:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:42,178 INFO L470 AbstractCegarLoop]: Abstraction has 99235 states and 184209 transitions. [2022-01-10 23:48:42,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 23:48:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 99235 states and 184209 transitions. [2022-01-10 23:48:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:48:42,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:42,184 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 23:48:42,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:48:42,184 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:42,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash -565457529, now seen corresponding path program 1 times [2022-01-10 23:48:42,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:42,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593484696] [2022-01-10 23:48:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:42,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:42,236 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 23:48:42,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:42,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593484696] [2022-01-10 23:48:42,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593484696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:42,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:42,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:48:42,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197135582] [2022-01-10 23:48:42,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:42,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:42,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:42,238 INFO L87 Difference]: Start difference. First operand 99235 states and 184209 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 23:48:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:45,252 INFO L93 Difference]: Finished difference Result 273688 states and 507503 transitions. [2022-01-10 23:48:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:45,252 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 23:48:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:45,823 INFO L225 Difference]: With dead ends: 273688 [2022-01-10 23:48:45,823 INFO L226 Difference]: Without dead ends: 197959 [2022-01-10 23:48:46,271 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 23:48:46,274 INFO L933 BasicCegarLoop]: 4617 mSDtfsCounter, 4287 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 8014 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:46,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4287 Valid, 8014 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:48:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197959 states. [2022-01-10 23:48:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197959 to 197959. [2022-01-10 23:48:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197959 states, 197954 states have (on average 1.8559362276084344) internal successors, (367390), 197958 states have internal predecessors, (367390), 0 states have call successors, (0), 0 states 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 23:48:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197959 states to 197959 states and 367390 transitions. [2022-01-10 23:48:51,051 INFO L78 Accepts]: Start accepts. Automaton has 197959 states and 367390 transitions. Word has length 65 [2022-01-10 23:48:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:48:51,051 INFO L470 AbstractCegarLoop]: Abstraction has 197959 states and 367390 transitions. [2022-01-10 23:48:51,052 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 23:48:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 197959 states and 367390 transitions. [2022-01-10 23:48:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:48:51,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:48:51,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:48:51,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:48:51,057 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:48:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:48:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash -349300045, now seen corresponding path program 1 times [2022-01-10 23:48:51,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:48:51,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523956687] [2022-01-10 23:48:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:48:51,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:48:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:48:51,491 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 23:48:51,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:48:51,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523956687] [2022-01-10 23:48:51,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523956687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:48:51,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:48:51,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:48:51,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891612058] [2022-01-10 23:48:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:48:51,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:48:51,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:48:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:48:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:48:51,493 INFO L87 Difference]: Start difference. First operand 197959 states and 367390 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:48:56,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:48:56,338 INFO L93 Difference]: Finished difference Result 546176 states and 1012477 transitions. [2022-01-10 23:48:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:48:56,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:48:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:48:57,371 INFO L225 Difference]: With dead ends: 546176 [2022-01-10 23:48:57,371 INFO L226 Difference]: Without dead ends: 394732 [2022-01-10 23:48:57,603 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 23:48:57,604 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4286 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4286 SdHoareTripleChecker+Valid, 7711 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:48:57,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4286 Valid, 7711 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:48:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394732 states. [2022-01-10 23:49:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394732 to 394730. [2022-01-10 23:49:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394730 states, 394725 states have (on average 1.8552865919310912) internal successors, (732328), 394729 states have internal predecessors, (732328), 0 states have call successors, (0), 0 states 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 23:49:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394730 states to 394730 states and 732328 transitions. [2022-01-10 23:49:07,253 INFO L78 Accepts]: Start accepts. Automaton has 394730 states and 732328 transitions. Word has length 66 [2022-01-10 23:49:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:07,254 INFO L470 AbstractCegarLoop]: Abstraction has 394730 states and 732328 transitions. [2022-01-10 23:49:07,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 394730 states and 732328 transitions. [2022-01-10 23:49:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:49:07,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:07,257 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 23:49:07,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:49:07,257 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:49:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2056614735, now seen corresponding path program 1 times [2022-01-10 23:49:07,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:07,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851259346] [2022-01-10 23:49:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:07,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:07,296 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 23:49:07,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:07,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851259346] [2022-01-10 23:49:07,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851259346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:07,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:07,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:07,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062818405] [2022-01-10 23:49:07,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:07,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:07,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:07,298 INFO L87 Difference]: Start difference. First operand 394730 states and 732328 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 23:49:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:17,834 INFO L93 Difference]: Finished difference Result 1088293 states and 2016638 transitions. [2022-01-10 23:49:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:17,835 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 23:49:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted.