/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:19:33,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:19:33,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:19:34,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:19:34,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:19:34,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:19:34,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:19:34,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:19:34,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:19:34,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:19:34,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:19:34,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:19:34,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:19:34,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:19:34,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:19:34,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:19:34,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:19:34,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:19:34,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:19:34,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:19:34,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:19:34,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:19:34,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:19:34,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:19:34,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:19:34,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:19:34,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:19:34,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:19:34,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:19:34,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:19:34,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:19:34,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:19:34,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:19:34,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:19:34,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:19:34,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:19:34,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:19:34,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:19:34,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:19:34,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:19:34,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:19:34,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:19:34,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:19:34,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:19:34,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:19:34,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:19:34,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:19:34,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:19:34,132 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:19:34,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:19:34,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:19:34,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:19:34,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:19:34,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:19:34,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:19:34,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:19:34,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:19:34,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:19:34,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:19:34,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:19:34,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:19:34,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:19:34,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:19:34,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:19:34,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:19:34,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:19:34,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:19:34,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:19:34,138 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:19:34,138 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:19:34,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:19:34,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:19:34,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:19:34,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:19:34,381 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:19:34,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c [2022-01-10 12:19:34,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30daec17/771e2c7098e54b788f6f5460ccadf02f/FLAGc3445eb9b [2022-01-10 12:19:34,900 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:19:34,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c [2022-01-10 12:19:34,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30daec17/771e2c7098e54b788f6f5460ccadf02f/FLAGc3445eb9b [2022-01-10 12:19:35,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30daec17/771e2c7098e54b788f6f5460ccadf02f [2022-01-10 12:19:35,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:19:35,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:19:35,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:19:35,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:19:35,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:19:35,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:35" (1/1) ... [2022-01-10 12:19:35,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4283c820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:35, skipping insertion in model container [2022-01-10 12:19:35,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:35" (1/1) ... [2022-01-10 12:19:35,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:19:35,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:19:35,649 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/email_spec7_product29.cil.c[16949,16962] [2022-01-10 12:19:35,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:35,810 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:19:35,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:19:35,854 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/email_spec7_product29.cil.c[16949,16962] [2022-01-10 12:19:35,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:35,932 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:19:35,979 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/email_spec7_product29.cil.c[16949,16962] [2022-01-10 12:19:36,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:36,050 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:19:36,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36 WrapperNode [2022-01-10 12:19:36,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:19:36,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:19:36,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:19:36,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:19:36,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,249 INFO L137 Inliner]: procedures = 133, calls = 224, calls flagged for inlining = 135, calls inlined = 308, statements flattened = 4777 [2022-01-10 12:19:36,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:19:36,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:19:36,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:19:36,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:19:36,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:19:36,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:19:36,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:19:36,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:19:36,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (1/1) ... [2022-01-10 12:19:36,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:19:36,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:19:36,420 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 12:19:36,445 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 12:19:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:19:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:19:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:19:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:19:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:19:36,717 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:19:36,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:19:38,673 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:19:38,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:19:38,686 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:19:38,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:38 BoogieIcfgContainer [2022-01-10 12:19:38,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:19:38,689 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:19:38,689 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:19:38,690 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:19:38,693 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:38" (1/1) ... [2022-01-10 12:19:39,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:19:39 BasicIcfg [2022-01-10 12:19:39,076 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:19:39,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:19:39,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:19:39,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:19:39,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:19:35" (1/4) ... [2022-01-10 12:19:39,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743f75bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:39, skipping insertion in model container [2022-01-10 12:19:39,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:36" (2/4) ... [2022-01-10 12:19:39,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743f75bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:39, skipping insertion in model container [2022-01-10 12:19:39,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:38" (3/4) ... [2022-01-10 12:19:39,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743f75bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:19:39, skipping insertion in model container [2022-01-10 12:19:39,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:19:39" (4/4) ... [2022-01-10 12:19:39,082 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product29.cil.cTransformedIcfg [2022-01-10 12:19:39,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:19:39,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:19:39,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:19:39,130 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 12:19:39,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:19:39,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 1081 states, 1074 states have (on average 1.6927374301675977) internal successors, (1818), 1080 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states 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 12:19:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:19:39,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:39,166 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 12:19:39,167 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1835508635, now seen corresponding path program 1 times [2022-01-10 12:19:39,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:39,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263266077] [2022-01-10 12:19:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:39,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:39,487 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 12:19:39,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:39,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263266077] [2022-01-10 12:19:39,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263266077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:39,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:39,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:19:39,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924270975] [2022-01-10 12:19:39,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:39,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:19:39,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:19:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:19:39,519 INFO L87 Difference]: Start difference. First operand has 1081 states, 1074 states have (on average 1.6927374301675977) internal successors, (1818), 1080 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) 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 12:19:39,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:39,643 INFO L93 Difference]: Finished difference Result 1858 states and 3097 transitions. [2022-01-10 12:19:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:19:39,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) 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 12:19:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:39,666 INFO L225 Difference]: With dead ends: 1858 [2022-01-10 12:19:39,666 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 12:19:39,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:19:39,679 INFO L933 BasicCegarLoop]: 1804 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:39,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 12:19:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2022-01-10 12:19:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.7003089598352215) internal successors, (1651), 976 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 12:19:39,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1651 transitions. [2022-01-10 12:19:39,823 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1651 transitions. Word has length 62 [2022-01-10 12:19:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:39,823 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1651 transitions. [2022-01-10 12:19:39,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) 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 12:19:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1651 transitions. [2022-01-10 12:19:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:19:39,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:39,831 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 12:19:39,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:19:39,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash -795802747, now seen corresponding path program 1 times [2022-01-10 12:19:39,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:39,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861999291] [2022-01-10 12:19:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:39,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:40,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:40,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861999291] [2022-01-10 12:19:40,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861999291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:40,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:40,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:19:40,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402134663] [2022-01-10 12:19:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:40,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:19:40,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:19:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:40,104 INFO L87 Difference]: Start difference. First operand 977 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:40,227 INFO L93 Difference]: Finished difference Result 1935 states and 3274 transitions. [2022-01-10 12:19:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:19:40,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:19:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:40,234 INFO L225 Difference]: With dead ends: 1935 [2022-01-10 12:19:40,234 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 12:19:40,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:19:40,237 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1626 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:40,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1626 Valid, 1644 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 12:19:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2022-01-10 12:19:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.698249227600412) internal successors, (1649), 976 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 12:19:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1649 transitions. [2022-01-10 12:19:40,283 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1649 transitions. Word has length 63 [2022-01-10 12:19:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:40,285 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1649 transitions. [2022-01-10 12:19:40,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1649 transitions. [2022-01-10 12:19:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:19:40,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:40,297 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 12:19:40,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:19:40,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1577968837, now seen corresponding path program 1 times [2022-01-10 12:19:40,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:40,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580609975] [2022-01-10 12:19:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:40,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:40,467 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 12:19:40,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:40,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580609975] [2022-01-10 12:19:40,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580609975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:40,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:40,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:40,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806593711] [2022-01-10 12:19:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:40,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:40,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:40,470 INFO L87 Difference]: Start difference. First operand 977 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 12:19:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:40,838 INFO L93 Difference]: Finished difference Result 4753 states and 8041 transitions. [2022-01-10 12:19:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:19:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 12:19:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:40,852 INFO L225 Difference]: With dead ends: 4753 [2022-01-10 12:19:40,853 INFO L226 Difference]: Without dead ends: 3800 [2022-01-10 12:19:40,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:19:40,860 INFO L933 BasicCegarLoop]: 3221 mSDtfsCounter, 8028 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8028 SdHoareTripleChecker+Valid, 8040 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:40,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8028 Valid, 8040 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-01-10 12:19:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 977. [2022-01-10 12:19:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.6972193614830071) internal successors, (1648), 976 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 12:19:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1648 transitions. [2022-01-10 12:19:40,932 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1648 transitions. Word has length 65 [2022-01-10 12:19:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:40,932 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1648 transitions. [2022-01-10 12:19:40,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 12:19:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1648 transitions. [2022-01-10 12:19:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:19:40,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:40,935 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 12:19:40,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:19:40,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:40,936 INFO L85 PathProgramCache]: Analyzing trace with hash 356168907, now seen corresponding path program 1 times [2022-01-10 12:19:40,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:40,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002234420] [2022-01-10 12:19:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:40,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:41,053 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 12:19:41,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:41,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002234420] [2022-01-10 12:19:41,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002234420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:41,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:41,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:19:41,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73983569] [2022-01-10 12:19:41,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:41,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:19:41,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:19:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:41,055 INFO L87 Difference]: Start difference. First operand 977 states and 1648 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 12:19:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:41,133 INFO L93 Difference]: Finished difference Result 1939 states and 3274 transitions. [2022-01-10 12:19:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:19:41,134 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 12:19:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:41,139 INFO L225 Difference]: With dead ends: 1939 [2022-01-10 12:19:41,139 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 12:19:41,140 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 12:19:41,145 INFO L933 BasicCegarLoop]: 1662 mSDtfsCounter, 1627 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:41,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 1684 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:41,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 12:19:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 977. [2022-01-10 12:19:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.6961894953656025) internal successors, (1647), 976 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states 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 12:19:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1647 transitions. [2022-01-10 12:19:41,197 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1647 transitions. Word has length 66 [2022-01-10 12:19:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:41,198 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1647 transitions. [2022-01-10 12:19:41,198 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 12:19:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1647 transitions. [2022-01-10 12:19:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:19:41,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:41,199 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 12:19:41,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:19:41,199 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -771353498, now seen corresponding path program 1 times [2022-01-10 12:19:41,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:41,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256734061] [2022-01-10 12:19:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:41,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:41,336 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 12:19:41,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256734061] [2022-01-10 12:19:41,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256734061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:41,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694353185] [2022-01-10 12:19:41,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:41,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:41,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:41,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:41,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:41,338 INFO L87 Difference]: Start difference. First operand 977 states and 1647 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:19:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:41,590 INFO L93 Difference]: Finished difference Result 2865 states and 4841 transitions. [2022-01-10 12:19:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:19:41,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:19:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:41,598 INFO L225 Difference]: With dead ends: 2865 [2022-01-10 12:19:41,598 INFO L226 Difference]: Without dead ends: 1922 [2022-01-10 12:19:41,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:41,602 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 7951 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7951 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:41,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7951 Valid, 3326 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2022-01-10 12:19:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 977. [2022-01-10 12:19:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.694129763130793) internal successors, (1645), 976 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states 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 12:19:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1645 transitions. [2022-01-10 12:19:41,663 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1645 transitions. Word has length 67 [2022-01-10 12:19:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:41,664 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1645 transitions. [2022-01-10 12:19:41,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:19:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1645 transitions. [2022-01-10 12:19:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:41,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:41,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:41,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:19:41,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2085095363, now seen corresponding path program 1 times [2022-01-10 12:19:41,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:41,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006011480] [2022-01-10 12:19:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:41,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:41,870 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 12:19:41,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:41,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006011480] [2022-01-10 12:19:41,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006011480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:41,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:41,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:41,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234301010] [2022-01-10 12:19:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:41,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:19:41,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:19:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:19:41,873 INFO L87 Difference]: Start difference. First operand 977 states and 1645 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:43,417 INFO L93 Difference]: Finished difference Result 5068 states and 8333 transitions. [2022-01-10 12:19:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:19:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:19:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:43,433 INFO L225 Difference]: With dead ends: 5068 [2022-01-10 12:19:43,434 INFO L226 Difference]: Without dead ends: 4458 [2022-01-10 12:19:43,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:19:43,437 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 12083 mSDsluCounter, 14497 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12083 SdHoareTripleChecker+Valid, 17096 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:43,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12083 Valid, 17096 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 12:19:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2022-01-10 12:19:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 1802. [2022-01-10 12:19:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1796 states have (on average 1.7010022271714922) internal successors, (3055), 1801 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states 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 12:19:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3055 transitions. [2022-01-10 12:19:43,596 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3055 transitions. Word has length 69 [2022-01-10 12:19:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:43,597 INFO L470 AbstractCegarLoop]: Abstraction has 1802 states and 3055 transitions. [2022-01-10 12:19:43,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3055 transitions. [2022-01-10 12:19:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:19:43,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:43,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:43,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:19:43,600 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2043794367, now seen corresponding path program 1 times [2022-01-10 12:19:43,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007276330] [2022-01-10 12:19:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:43,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:43,766 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 12:19:43,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:43,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007276330] [2022-01-10 12:19:43,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007276330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:43,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:43,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:19:43,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000894418] [2022-01-10 12:19:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:43,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:43,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:43,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:43,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:43,768 INFO L87 Difference]: Start difference. First operand 1802 states and 3055 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:44,624 INFO L93 Difference]: Finished difference Result 6333 states and 10462 transitions. [2022-01-10 12:19:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:19:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:19:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:44,645 INFO L225 Difference]: With dead ends: 6333 [2022-01-10 12:19:44,645 INFO L226 Difference]: Without dead ends: 5233 [2022-01-10 12:19:44,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:44,648 INFO L933 BasicCegarLoop]: 2333 mSDtfsCounter, 4686 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 7169 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:44,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 7169 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:19:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-01-10 12:19:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 3179. [2022-01-10 12:19:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3173 states have (on average 1.6924046643554995) internal successors, (5370), 3178 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states 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 12:19:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5370 transitions. [2022-01-10 12:19:44,883 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5370 transitions. Word has length 70 [2022-01-10 12:19:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 5370 transitions. [2022-01-10 12:19:44,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5370 transitions. [2022-01-10 12:19:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:19:44,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:44,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:44,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:19:44,887 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:44,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1634970142, now seen corresponding path program 1 times [2022-01-10 12:19:44,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:44,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550432540] [2022-01-10 12:19:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:44,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:45,005 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 12:19:45,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550432540] [2022-01-10 12:19:45,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550432540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:45,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:45,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:45,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466080798] [2022-01-10 12:19:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:45,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:45,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:45,007 INFO L87 Difference]: Start difference. First operand 3179 states and 5370 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:47,063 INFO L93 Difference]: Finished difference Result 25632 states and 42574 transitions. [2022-01-10 12:19:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:19:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:47,134 INFO L225 Difference]: With dead ends: 25632 [2022-01-10 12:19:47,134 INFO L226 Difference]: Without dead ends: 23342 [2022-01-10 12:19:47,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:47,145 INFO L933 BasicCegarLoop]: 3135 mSDtfsCounter, 13176 mSDsluCounter, 11101 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13176 SdHoareTripleChecker+Valid, 14236 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:47,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13176 Valid, 14236 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:19:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23342 states. [2022-01-10 12:19:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23342 to 5560. [2022-01-10 12:19:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5554 states have (on average 1.693194094346417) internal successors, (9404), 5559 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states 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 12:19:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9404 transitions. [2022-01-10 12:19:47,777 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 9404 transitions. Word has length 70 [2022-01-10 12:19:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:47,778 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 9404 transitions. [2022-01-10 12:19:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 9404 transitions. [2022-01-10 12:19:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:19:47,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:47,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:47,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:19:47,783 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:47,783 INFO L85 PathProgramCache]: Analyzing trace with hash -857814010, now seen corresponding path program 1 times [2022-01-10 12:19:47,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:47,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613992107] [2022-01-10 12:19:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:47,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:47,889 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 12:19:47,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:47,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613992107] [2022-01-10 12:19:47,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613992107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:47,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:47,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:47,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272224083] [2022-01-10 12:19:47,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:47,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:47,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:47,894 INFO L87 Difference]: Start difference. First operand 5560 states and 9404 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:48,630 INFO L93 Difference]: Finished difference Result 12358 states and 20520 transitions. [2022-01-10 12:19:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:19:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:19:48,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:48,648 INFO L225 Difference]: With dead ends: 12358 [2022-01-10 12:19:48,648 INFO L226 Difference]: Without dead ends: 8506 [2022-01-10 12:19:48,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:48,655 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 5573 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5573 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:48,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5573 Valid, 3554 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2022-01-10 12:19:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 5560. [2022-01-10 12:19:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5554 states have (on average 1.6903132877205618) internal successors, (9388), 5559 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states 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 12:19:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9388 transitions. [2022-01-10 12:19:49,138 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 9388 transitions. Word has length 71 [2022-01-10 12:19:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:49,139 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 9388 transitions. [2022-01-10 12:19:49,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 9388 transitions. [2022-01-10 12:19:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:19:49,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:49,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:49,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:19:49,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1313503772, now seen corresponding path program 1 times [2022-01-10 12:19:49,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:49,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871386992] [2022-01-10 12:19:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:49,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:49,217 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 12:19:49,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:49,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871386992] [2022-01-10 12:19:49,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871386992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:49,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:49,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:49,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429862055] [2022-01-10 12:19:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:49,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:49,219 INFO L87 Difference]: Start difference. First operand 5560 states and 9388 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:50,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:50,241 INFO L93 Difference]: Finished difference Result 16505 states and 27905 transitions. [2022-01-10 12:19:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:19:50,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:19:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:50,265 INFO L225 Difference]: With dead ends: 16505 [2022-01-10 12:19:50,266 INFO L226 Difference]: Without dead ends: 10982 [2022-01-10 12:19:50,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:50,277 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 4866 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:50,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4866 Valid, 4785 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10982 states. [2022-01-10 12:19:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10982 to 5560. [2022-01-10 12:19:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5554 states have (on average 1.6899531868923299) internal successors, (9386), 5559 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states 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 12:19:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9386 transitions. [2022-01-10 12:19:50,871 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 9386 transitions. Word has length 71 [2022-01-10 12:19:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:50,871 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 9386 transitions. [2022-01-10 12:19:50,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 9386 transitions. [2022-01-10 12:19:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:50,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:50,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:50,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:19:50,877 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash 843920239, now seen corresponding path program 1 times [2022-01-10 12:19:50,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:50,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668285178] [2022-01-10 12:19:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:50,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:51,013 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 12:19:51,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668285178] [2022-01-10 12:19:51,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668285178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:51,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:51,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:51,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138881494] [2022-01-10 12:19:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:51,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:51,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:51,016 INFO L87 Difference]: Start difference. First operand 5560 states and 9386 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:52,906 INFO L93 Difference]: Finished difference Result 20064 states and 33600 transitions. [2022-01-10 12:19:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:52,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:19:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:52,929 INFO L225 Difference]: With dead ends: 20064 [2022-01-10 12:19:52,929 INFO L226 Difference]: Without dead ends: 18306 [2022-01-10 12:19:52,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:52,936 INFO L933 BasicCegarLoop]: 3635 mSDtfsCounter, 9779 mSDsluCounter, 11349 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9779 SdHoareTripleChecker+Valid, 14984 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:52,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9779 Valid, 14984 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:19:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18306 states. [2022-01-10 12:19:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18306 to 6326. [2022-01-10 12:19:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 6320 states have (on average 1.6857594936708862) internal successors, (10654), 6325 states have internal predecessors, (10654), 0 states have call successors, (0), 0 states 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 12:19:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 10654 transitions. [2022-01-10 12:19:53,535 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 10654 transitions. Word has length 72 [2022-01-10 12:19:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:53,535 INFO L470 AbstractCegarLoop]: Abstraction has 6326 states and 10654 transitions. [2022-01-10 12:19:53,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 10654 transitions. [2022-01-10 12:19:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:53,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:53,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:53,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:19:53,541 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash -433837086, now seen corresponding path program 1 times [2022-01-10 12:19:53,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822840183] [2022-01-10 12:19:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:53,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:53,709 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 12:19:53,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:53,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822840183] [2022-01-10 12:19:53,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822840183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:53,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:53,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535868247] [2022-01-10 12:19:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:53,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:19:53,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:19:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:19:53,711 INFO L87 Difference]: Start difference. First operand 6326 states and 10654 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:55,996 INFO L93 Difference]: Finished difference Result 21365 states and 35304 transitions. [2022-01-10 12:19:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:19:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:19:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:56,022 INFO L225 Difference]: With dead ends: 21365 [2022-01-10 12:19:56,023 INFO L226 Difference]: Without dead ends: 17921 [2022-01-10 12:19:56,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:19:56,031 INFO L933 BasicCegarLoop]: 3573 mSDtfsCounter, 9001 mSDsluCounter, 12892 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9001 SdHoareTripleChecker+Valid, 16465 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:56,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9001 Valid, 16465 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:19:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17921 states. [2022-01-10 12:19:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17921 to 7604. [2022-01-10 12:19:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7598 states have (on average 1.6778099499868386) internal successors, (12748), 7603 states have internal predecessors, (12748), 0 states have call successors, (0), 0 states 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 12:19:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 12748 transitions. [2022-01-10 12:19:56,705 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 12748 transitions. Word has length 72 [2022-01-10 12:19:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:56,706 INFO L470 AbstractCegarLoop]: Abstraction has 7604 states and 12748 transitions. [2022-01-10 12:19:56,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 12748 transitions. [2022-01-10 12:19:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:56,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:56,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:56,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:19:56,711 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 679414412, now seen corresponding path program 1 times [2022-01-10 12:19:56,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730204157] [2022-01-10 12:19:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:56,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:56,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:56,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730204157] [2022-01-10 12:19:56,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730204157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:56,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:56,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:19:56,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723212395] [2022-01-10 12:19:56,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:56,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:19:56,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:19:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:19:56,785 INFO L87 Difference]: Start difference. First operand 7604 states and 12748 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:57,652 INFO L93 Difference]: Finished difference Result 12144 states and 20219 transitions. [2022-01-10 12:19:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:19:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:19:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:57,664 INFO L225 Difference]: With dead ends: 12144 [2022-01-10 12:19:57,664 INFO L226 Difference]: Without dead ends: 9738 [2022-01-10 12:19:57,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:57,667 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 3064 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:57,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3064 Valid, 3538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2022-01-10 12:19:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 7604. [2022-01-10 12:19:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7598 states have (on average 1.6772834956567517) internal successors, (12744), 7603 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states 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 12:19:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 12744 transitions. [2022-01-10 12:19:58,304 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 12744 transitions. Word has length 72 [2022-01-10 12:19:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:58,304 INFO L470 AbstractCegarLoop]: Abstraction has 7604 states and 12744 transitions. [2022-01-10 12:19:58,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 12744 transitions. [2022-01-10 12:19:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:58,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:58,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:58,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:19:58,310 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1504262515, now seen corresponding path program 1 times [2022-01-10 12:19:58,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938839307] [2022-01-10 12:19:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:58,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:58,416 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 12:19:58,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938839307] [2022-01-10 12:19:58,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938839307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:58,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:58,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:19:58,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438840934] [2022-01-10 12:19:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:58,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:58,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:58,418 INFO L87 Difference]: Start difference. First operand 7604 states and 12744 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:00,300 INFO L93 Difference]: Finished difference Result 22533 states and 37321 transitions. [2022-01-10 12:20:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:20:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:00,325 INFO L225 Difference]: With dead ends: 22533 [2022-01-10 12:20:00,325 INFO L226 Difference]: Without dead ends: 17717 [2022-01-10 12:20:00,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:00,333 INFO L933 BasicCegarLoop]: 4273 mSDtfsCounter, 4100 mSDsluCounter, 7815 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 12088 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:00,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4100 Valid, 12088 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:20:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17717 states. [2022-01-10 12:20:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17717 to 9556. [2022-01-10 12:20:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9556 states, 9550 states have (on average 1.6586387434554974) internal successors, (15840), 9555 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states 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 12:20:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 15840 transitions. [2022-01-10 12:20:01,242 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 15840 transitions. Word has length 72 [2022-01-10 12:20:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:01,242 INFO L470 AbstractCegarLoop]: Abstraction has 9556 states and 15840 transitions. [2022-01-10 12:20:01,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 15840 transitions. [2022-01-10 12:20:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:20:01,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:01,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:01,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:20:01,248 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash 152498285, now seen corresponding path program 1 times [2022-01-10 12:20:01,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:01,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901514858] [2022-01-10 12:20:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:01,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:01,344 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 12:20:01,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:01,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901514858] [2022-01-10 12:20:01,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901514858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:01,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:01,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:20:01,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659416620] [2022-01-10 12:20:01,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:01,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:20:01,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:20:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:20:01,346 INFO L87 Difference]: Start difference. First operand 9556 states and 15840 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:06,546 INFO L93 Difference]: Finished difference Result 61166 states and 101242 transitions. [2022-01-10 12:20:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:20:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:20:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:06,725 INFO L225 Difference]: With dead ends: 61166 [2022-01-10 12:20:06,725 INFO L226 Difference]: Without dead ends: 55114 [2022-01-10 12:20:06,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:20:06,744 INFO L933 BasicCegarLoop]: 2800 mSDtfsCounter, 9916 mSDsluCounter, 7893 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9916 SdHoareTripleChecker+Valid, 10693 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:06,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9916 Valid, 10693 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:20:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55114 states. [2022-01-10 12:20:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55114 to 19050. [2022-01-10 12:20:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19050 states, 19044 states have (on average 1.658160050409578) internal successors, (31578), 19049 states have internal predecessors, (31578), 0 states have call successors, (0), 0 states 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 12:20:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19050 states to 19050 states and 31578 transitions. [2022-01-10 12:20:08,739 INFO L78 Accepts]: Start accepts. Automaton has 19050 states and 31578 transitions. Word has length 73 [2022-01-10 12:20:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:08,739 INFO L470 AbstractCegarLoop]: Abstraction has 19050 states and 31578 transitions. [2022-01-10 12:20:08,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 19050 states and 31578 transitions. [2022-01-10 12:20:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:20:08,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:08,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:08,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:20:08,749 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:08,750 INFO L85 PathProgramCache]: Analyzing trace with hash 693094454, now seen corresponding path program 1 times [2022-01-10 12:20:08,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:08,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945016661] [2022-01-10 12:20:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:08,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:08,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:08,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945016661] [2022-01-10 12:20:08,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945016661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:08,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:08,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:20:08,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868001752] [2022-01-10 12:20:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:08,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:20:08,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:20:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:08,870 INFO L87 Difference]: Start difference. First operand 19050 states and 31578 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:11,725 INFO L93 Difference]: Finished difference Result 38614 states and 63709 transitions. [2022-01-10 12:20:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:20:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:20:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:11,756 INFO L225 Difference]: With dead ends: 38614 [2022-01-10 12:20:11,756 INFO L226 Difference]: Without dead ends: 23374 [2022-01-10 12:20:11,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:20:11,773 INFO L933 BasicCegarLoop]: 1630 mSDtfsCounter, 6547 mSDsluCounter, 6171 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6547 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:11,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6547 Valid, 7801 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23374 states. [2022-01-10 12:20:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23374 to 18828. [2022-01-10 12:20:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18828 states, 18822 states have (on average 1.6510466475401127) internal successors, (31076), 18827 states have internal predecessors, (31076), 0 states have call successors, (0), 0 states 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 12:20:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18828 states to 18828 states and 31076 transitions. [2022-01-10 12:20:13,647 INFO L78 Accepts]: Start accepts. Automaton has 18828 states and 31076 transitions. Word has length 73 [2022-01-10 12:20:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:13,647 INFO L470 AbstractCegarLoop]: Abstraction has 18828 states and 31076 transitions. [2022-01-10 12:20:13,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 18828 states and 31076 transitions. [2022-01-10 12:20:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:20:13,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:13,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:13,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:20:13,656 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1575367354, now seen corresponding path program 1 times [2022-01-10 12:20:13,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:13,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756781951] [2022-01-10 12:20:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:13,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:13,773 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 12:20:13,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:13,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756781951] [2022-01-10 12:20:13,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756781951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:13,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:13,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:13,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47322936] [2022-01-10 12:20:13,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:13,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:20:13,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:20:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:13,776 INFO L87 Difference]: Start difference. First operand 18828 states and 31076 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:20:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:18,566 INFO L93 Difference]: Finished difference Result 48720 states and 80645 transitions. [2022-01-10 12:20:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:20:18,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 12:20:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:18,628 INFO L225 Difference]: With dead ends: 48720 [2022-01-10 12:20:18,629 INFO L226 Difference]: Without dead ends: 40314 [2022-01-10 12:20:18,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:20:18,646 INFO L933 BasicCegarLoop]: 3354 mSDtfsCounter, 11618 mSDsluCounter, 9274 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11618 SdHoareTripleChecker+Valid, 12628 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:18,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11618 Valid, 12628 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:20:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40314 states. [2022-01-10 12:20:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40314 to 18808. [2022-01-10 12:20:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18808 states, 18802 states have (on average 1.6506754600574407) internal successors, (31036), 18807 states have internal predecessors, (31036), 0 states have call successors, (0), 0 states 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 12:20:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 31036 transitions. [2022-01-10 12:20:20,758 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 31036 transitions. Word has length 74 [2022-01-10 12:20:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:20,758 INFO L470 AbstractCegarLoop]: Abstraction has 18808 states and 31036 transitions. [2022-01-10 12:20:20,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:20:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 31036 transitions. [2022-01-10 12:20:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:20:20,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:20,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:20,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:20:20,766 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:20,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1771880859, now seen corresponding path program 1 times [2022-01-10 12:20:20,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:20,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084693452] [2022-01-10 12:20:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:20,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:20,868 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 12:20:20,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:20,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084693452] [2022-01-10 12:20:20,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084693452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:20,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:20,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:20,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73811695] [2022-01-10 12:20:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:20,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:20,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:20,870 INFO L87 Difference]: Start difference. First operand 18808 states and 31036 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:20:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:30,972 INFO L93 Difference]: Finished difference Result 92212 states and 149612 transitions. [2022-01-10 12:20:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:30,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 12:20:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:31,096 INFO L225 Difference]: With dead ends: 92212 [2022-01-10 12:20:31,096 INFO L226 Difference]: Without dead ends: 80518 [2022-01-10 12:20:31,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:31,123 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 6359 mSDsluCounter, 7106 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6359 SdHoareTripleChecker+Valid, 9002 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:31,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6359 Valid, 9002 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:20:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80518 states. [2022-01-10 12:20:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80518 to 33374. [2022-01-10 12:20:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33374 states, 33368 states have (on average 1.6180771997122991) internal successors, (53992), 33373 states have internal predecessors, (53992), 0 states have call successors, (0), 0 states 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 12:20:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33374 states to 33374 states and 53992 transitions. [2022-01-10 12:20:36,088 INFO L78 Accepts]: Start accepts. Automaton has 33374 states and 53992 transitions. Word has length 74 [2022-01-10 12:20:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:36,088 INFO L470 AbstractCegarLoop]: Abstraction has 33374 states and 53992 transitions. [2022-01-10 12:20:36,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 12:20:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 33374 states and 53992 transitions. [2022-01-10 12:20:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:20:36,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:36,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:36,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:20:36,097 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash 907219865, now seen corresponding path program 1 times [2022-01-10 12:20:36,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:36,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020071372] [2022-01-10 12:20:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:36,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:36,198 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 12:20:36,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020071372] [2022-01-10 12:20:36,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020071372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:36,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:36,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:36,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922657698] [2022-01-10 12:20:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:36,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:36,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:36,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:36,200 INFO L87 Difference]: Start difference. First operand 33374 states and 53992 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)